/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:39:28,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:39:28,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:39:28,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 12:39:28,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:39:28,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:39:28,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:39:28,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:39:28,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:39:28,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:39:28,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:39:28,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:39:28,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:39:28,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:39:28,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:39:28,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:39:28,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:39:28,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:39:28,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:39:28,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:39:28,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:39:28,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:39:28,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:39:28,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:39:28,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:39:28,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:39:28,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:39:28,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:39:28,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:39:28,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:39:28,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:39:28,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:39:28,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:39:28,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:39:28,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:39:28,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:39:28,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:39:28,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:39:28,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:39:28,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:39:28,139 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:39:28,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:39:28,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:39:28,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:39:28,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:39:28,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:39:28,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:39:28,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:39:28,140 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:39:28,140 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:39:28,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:39:28,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:39:28,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:39:28,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:39:28,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:39:28,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:39:28,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:39:28,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:39:28,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:39:28,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:39:28,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:39:28,142 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:39:28,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:39:28,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:39:28,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:39:28,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:39:28,143 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:39:28,143 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:39:28,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:39:28,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:39:28,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:39:28,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:39:28,326 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:39:28,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.06.cil.c [2022-01-10 12:39:28,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881495ef4/027a39497fad479e94098275e92fd162/FLAGecb45a830 [2022-01-10 12:39:28,829 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:39:28,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.06.cil.c [2022-01-10 12:39:28,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881495ef4/027a39497fad479e94098275e92fd162/FLAGecb45a830 [2022-01-10 12:39:29,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881495ef4/027a39497fad479e94098275e92fd162 [2022-01-10 12:39:29,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:39:29,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:39:29,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:39:29,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:39:29,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:39:29,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cb27ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29, skipping insertion in model container [2022-01-10 12:39:29,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:39:29,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:39:29,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.06.cil.c[706,719] [2022-01-10 12:39:29,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:39:29,380 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:39:29,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.06.cil.c[706,719] [2022-01-10 12:39:29,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:39:29,477 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:39:29,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29 WrapperNode [2022-01-10 12:39:29,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:39:29,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:39:29,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:39:29,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:39:29,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,539 INFO L137 Inliner]: procedures = 40, calls = 48, calls flagged for inlining = 43, calls inlined = 104, statements flattened = 1522 [2022-01-10 12:39:29,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:39:29,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:39:29,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:39:29,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:39:29,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:39:29,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:39:29,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:39:29,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:39:29,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (1/1) ... [2022-01-10 12:39:29,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:39:29,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:39:29,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:39:29,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:39:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:39:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:39:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:39:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:39:29,751 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:39:29,752 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:39:30,484 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:39:30,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:39:30,497 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 12:39:30,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:39:30 BoogieIcfgContainer [2022-01-10 12:39:30,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:39:30,500 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:39:30,500 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:39:30,501 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:39:30,503 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:39:30" (1/1) ... [2022-01-10 12:39:30,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:39:30 BasicIcfg [2022-01-10 12:39:30,650 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:39:30,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:39:30,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:39:30,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:39:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:39:29" (1/4) ... [2022-01-10 12:39:30,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddb3d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:39:30, skipping insertion in model container [2022-01-10 12:39:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:29" (2/4) ... [2022-01-10 12:39:30,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddb3d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:39:30, skipping insertion in model container [2022-01-10 12:39:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:39:30" (3/4) ... [2022-01-10 12:39:30,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddb3d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:39:30, skipping insertion in model container [2022-01-10 12:39:30,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:39:30" (4/4) ... [2022-01-10 12:39:30,655 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.cTransformedIcfg [2022-01-10 12:39:30,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:39:30,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:39:30,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:39:30,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:39:30,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:39:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 634 states, 632 states have (on average 1.5300632911392404) internal successors, (967), 633 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:30,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:30,728 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] [2022-01-10 12:39:30,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1495817451, now seen corresponding path program 1 times [2022-01-10 12:39:30,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:30,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534809366] [2022-01-10 12:39:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:30,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:30,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:30,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534809366] [2022-01-10 12:39:30,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534809366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:30,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:31,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:31,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842296470] [2022-01-10 12:39:31,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:31,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:31,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:31,029 INFO L87 Difference]: Start difference. First operand has 634 states, 632 states have (on average 1.5300632911392404) internal successors, (967), 633 states have internal predecessors, (967), 0 states have call successors, (0), 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 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:31,162 INFO L93 Difference]: Finished difference Result 1747 states and 2662 transitions. [2022-01-10 12:39:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:31,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:31,185 INFO L225 Difference]: With dead ends: 1747 [2022-01-10 12:39:31,185 INFO L226 Difference]: Without dead ends: 1118 [2022-01-10 12:39:31,189 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 12:39:31,191 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 847 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:31,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1709 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:39:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-01-10 12:39:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1115. [2022-01-10 12:39:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4829443447037702) internal successors, (1652), 1114 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1652 transitions. [2022-01-10 12:39:31,313 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1652 transitions. Word has length 102 [2022-01-10 12:39:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:31,313 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1652 transitions. [2022-01-10 12:39:31,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1652 transitions. [2022-01-10 12:39:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:31,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:31,315 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] [2022-01-10 12:39:31,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:39:31,315 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:31,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash -983841484, now seen corresponding path program 1 times [2022-01-10 12:39:31,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:31,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373593579] [2022-01-10 12:39:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:31,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:31,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:31,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373593579] [2022-01-10 12:39:31,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373593579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:31,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:31,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:31,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880407711] [2022-01-10 12:39:31,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:31,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:31,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:31,395 INFO L87 Difference]: Start difference. First operand 1115 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:31,430 INFO L93 Difference]: Finished difference Result 2216 states and 3282 transitions. [2022-01-10 12:39:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:31,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:31,434 INFO L225 Difference]: With dead ends: 2216 [2022-01-10 12:39:31,434 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:31,438 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 12:39:31,439 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 920 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 928 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 12:39:31,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 928 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:31,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4757630161579893) internal successors, (1644), 1114 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1644 transitions. [2022-01-10 12:39:31,477 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1644 transitions. Word has length 102 [2022-01-10 12:39:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:31,477 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1644 transitions. [2022-01-10 12:39:31,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1644 transitions. [2022-01-10 12:39:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:31,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:31,483 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] [2022-01-10 12:39:31,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:39:31,486 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:31,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:31,490 INFO L85 PathProgramCache]: Analyzing trace with hash 742082102, now seen corresponding path program 1 times [2022-01-10 12:39:31,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:31,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140529057] [2022-01-10 12:39:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:31,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:31,562 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 12:39:31,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:31,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140529057] [2022-01-10 12:39:31,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140529057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:31,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:31,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:31,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782115800] [2022-01-10 12:39:31,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:31,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:31,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:31,563 INFO L87 Difference]: Start difference. First operand 1115 states and 1644 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:31,598 INFO L93 Difference]: Finished difference Result 2215 states and 3265 transitions. [2022-01-10 12:39:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:31,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:31,602 INFO L225 Difference]: With dead ends: 2215 [2022-01-10 12:39:31,602 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:31,604 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 12:39:31,607 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 914 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 923 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 12:39:31,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 923 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:31,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:31,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4685816876122082) internal successors, (1636), 1114 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1636 transitions. [2022-01-10 12:39:31,634 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1636 transitions. Word has length 102 [2022-01-10 12:39:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:31,635 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1636 transitions. [2022-01-10 12:39:31,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1636 transitions. [2022-01-10 12:39:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:31,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:31,637 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] [2022-01-10 12:39:31,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:39:31,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash 382115060, now seen corresponding path program 1 times [2022-01-10 12:39:31,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:31,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656388821] [2022-01-10 12:39:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:31,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:31,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:31,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656388821] [2022-01-10 12:39:31,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656388821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:31,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:31,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:31,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634446557] [2022-01-10 12:39:31,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:31,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:31,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:31,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:31,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:31,718 INFO L87 Difference]: Start difference. First operand 1115 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:31,753 INFO L93 Difference]: Finished difference Result 2214 states and 3248 transitions. [2022-01-10 12:39:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:31,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:31,757 INFO L225 Difference]: With dead ends: 2214 [2022-01-10 12:39:31,757 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:31,758 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 12:39:31,763 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 908 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 918 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 12:39:31,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 918 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:31,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:31,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4614003590664273) internal successors, (1628), 1114 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1628 transitions. [2022-01-10 12:39:31,842 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1628 transitions. Word has length 102 [2022-01-10 12:39:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:31,842 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1628 transitions. [2022-01-10 12:39:31,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1628 transitions. [2022-01-10 12:39:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:31,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:31,843 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] [2022-01-10 12:39:31,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:39:31,844 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1707706762, now seen corresponding path program 1 times [2022-01-10 12:39:31,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:31,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560597972] [2022-01-10 12:39:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:31,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:31,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:31,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560597972] [2022-01-10 12:39:31,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560597972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:31,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:31,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:31,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997793004] [2022-01-10 12:39:31,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:31,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:31,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:31,893 INFO L87 Difference]: Start difference. First operand 1115 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:31,929 INFO L93 Difference]: Finished difference Result 2213 states and 3231 transitions. [2022-01-10 12:39:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:31,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:31,933 INFO L225 Difference]: With dead ends: 2213 [2022-01-10 12:39:31,933 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:31,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:31,934 INFO L933 BasicCegarLoop]: 913 mSDtfsCounter, 902 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 913 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 12:39:31,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 913 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4542190305206464) internal successors, (1620), 1114 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1620 transitions. [2022-01-10 12:39:31,972 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1620 transitions. Word has length 102 [2022-01-10 12:39:31,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:31,973 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1620 transitions. [2022-01-10 12:39:31,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1620 transitions. [2022-01-10 12:39:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:31,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:31,977 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] [2022-01-10 12:39:31,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:39:31,978 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash -528194380, now seen corresponding path program 1 times [2022-01-10 12:39:31,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:31,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420481670] [2022-01-10 12:39:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:31,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:32,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:32,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420481670] [2022-01-10 12:39:32,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420481670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:32,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:32,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:32,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391401372] [2022-01-10 12:39:32,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:32,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:32,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:32,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:32,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:32,010 INFO L87 Difference]: Start difference. First operand 1115 states and 1620 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:32,060 INFO L93 Difference]: Finished difference Result 2211 states and 3212 transitions. [2022-01-10 12:39:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:32,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:32,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:32,063 INFO L225 Difference]: With dead ends: 2211 [2022-01-10 12:39:32,063 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:32,065 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 12:39:32,066 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 895 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 908 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 12:39:32,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 908 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4470377019748653) internal successors, (1612), 1114 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1612 transitions. [2022-01-10 12:39:32,105 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1612 transitions. Word has length 102 [2022-01-10 12:39:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:32,105 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1612 transitions. [2022-01-10 12:39:32,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1612 transitions. [2022-01-10 12:39:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:32,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:32,106 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] [2022-01-10 12:39:32,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:39:32,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash 424987250, now seen corresponding path program 1 times [2022-01-10 12:39:32,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:32,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627513307] [2022-01-10 12:39:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:32,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:32,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627513307] [2022-01-10 12:39:32,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627513307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:32,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:32,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:32,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837441129] [2022-01-10 12:39:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:32,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:32,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:32,148 INFO L87 Difference]: Start difference. First operand 1115 states and 1612 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:32,212 INFO L93 Difference]: Finished difference Result 2210 states and 3195 transitions. [2022-01-10 12:39:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:32,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:32,217 INFO L225 Difference]: With dead ends: 2210 [2022-01-10 12:39:32,217 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:32,218 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 12:39:32,219 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 809 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:32,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 955 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4272890484739678) internal successors, (1590), 1114 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1590 transitions. [2022-01-10 12:39:32,254 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1590 transitions. Word has length 102 [2022-01-10 12:39:32,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:32,254 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1590 transitions. [2022-01-10 12:39:32,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1590 transitions. [2022-01-10 12:39:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:32,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:32,255 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] [2022-01-10 12:39:32,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:39:32,255 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:32,256 INFO L85 PathProgramCache]: Analyzing trace with hash 363148437, now seen corresponding path program 1 times [2022-01-10 12:39:32,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:32,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323031457] [2022-01-10 12:39:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:32,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:32,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:32,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323031457] [2022-01-10 12:39:32,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323031457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:32,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:32,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:32,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060511533] [2022-01-10 12:39:32,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:32,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:32,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:32,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:32,291 INFO L87 Difference]: Start difference. First operand 1115 states and 1590 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:32,349 INFO L93 Difference]: Finished difference Result 2209 states and 3150 transitions. [2022-01-10 12:39:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:32,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:32,352 INFO L225 Difference]: With dead ends: 2209 [2022-01-10 12:39:32,352 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:32,353 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 12:39:32,353 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 796 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:32,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 941 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.40754039497307) internal successors, (1568), 1114 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1568 transitions. [2022-01-10 12:39:32,386 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1568 transitions. Word has length 102 [2022-01-10 12:39:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:32,387 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1568 transitions. [2022-01-10 12:39:32,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1568 transitions. [2022-01-10 12:39:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:32,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:32,388 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] [2022-01-10 12:39:32,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:39:32,388 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1414529484, now seen corresponding path program 1 times [2022-01-10 12:39:32,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:32,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784671094] [2022-01-10 12:39:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:32,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:32,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784671094] [2022-01-10 12:39:32,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784671094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:32,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:32,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:32,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068485604] [2022-01-10 12:39:32,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:32,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:32,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:32,422 INFO L87 Difference]: Start difference. First operand 1115 states and 1568 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:32,489 INFO L93 Difference]: Finished difference Result 2208 states and 3105 transitions. [2022-01-10 12:39:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:32,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:32,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:32,492 INFO L225 Difference]: With dead ends: 2208 [2022-01-10 12:39:32,492 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:32,494 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 12:39:32,495 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 783 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:32,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 927 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.3877917414721723) internal successors, (1546), 1114 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1546 transitions. [2022-01-10 12:39:32,536 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1546 transitions. Word has length 102 [2022-01-10 12:39:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:32,537 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1546 transitions. [2022-01-10 12:39:32,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1546 transitions. [2022-01-10 12:39:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:32,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:32,537 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] [2022-01-10 12:39:32,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:39:32,538 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash -395392425, now seen corresponding path program 1 times [2022-01-10 12:39:32,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:32,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220206515] [2022-01-10 12:39:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:32,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:32,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:32,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220206515] [2022-01-10 12:39:32,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220206515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:32,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:32,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:32,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838381286] [2022-01-10 12:39:32,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:32,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:32,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:32,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:32,576 INFO L87 Difference]: Start difference. First operand 1115 states and 1546 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:32,642 INFO L93 Difference]: Finished difference Result 2207 states and 3060 transitions. [2022-01-10 12:39:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:32,646 INFO L225 Difference]: With dead ends: 2207 [2022-01-10 12:39:32,646 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:32,648 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 12:39:32,648 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 770 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:32,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 913 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.3680430879712746) internal successors, (1524), 1114 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1524 transitions. [2022-01-10 12:39:32,686 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1524 transitions. Word has length 102 [2022-01-10 12:39:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:32,687 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1524 transitions. [2022-01-10 12:39:32,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1524 transitions. [2022-01-10 12:39:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:32,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:32,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:39:32,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:39:32,688 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2001900790, now seen corresponding path program 1 times [2022-01-10 12:39:32,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:32,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655798198] [2022-01-10 12:39:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:32,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:32,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:32,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655798198] [2022-01-10 12:39:32,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655798198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:32,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:32,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:32,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713250211] [2022-01-10 12:39:32,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:32,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:32,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:32,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:32,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:32,715 INFO L87 Difference]: Start difference. First operand 1115 states and 1524 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:32,785 INFO L93 Difference]: Finished difference Result 2206 states and 3015 transitions. [2022-01-10 12:39:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:32,789 INFO L225 Difference]: With dead ends: 2206 [2022-01-10 12:39:32,789 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:32,790 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 12:39:32,790 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 757 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:32,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 899 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:32,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.3482944344703771) internal successors, (1502), 1114 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1502 transitions. [2022-01-10 12:39:32,842 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1502 transitions. Word has length 102 [2022-01-10 12:39:32,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:32,842 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1502 transitions. [2022-01-10 12:39:32,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1502 transitions. [2022-01-10 12:39:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:32,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:32,843 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] [2022-01-10 12:39:32,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:39:32,843 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:32,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1218043111, now seen corresponding path program 1 times [2022-01-10 12:39:32,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:32,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267757018] [2022-01-10 12:39:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:32,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:32,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:32,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267757018] [2022-01-10 12:39:32,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267757018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:32,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:32,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:32,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931740635] [2022-01-10 12:39:32,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:32,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:32,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:32,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:32,872 INFO L87 Difference]: Start difference. First operand 1115 states and 1502 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:32,951 INFO L93 Difference]: Finished difference Result 2205 states and 2970 transitions. [2022-01-10 12:39:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:32,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:32,954 INFO L225 Difference]: With dead ends: 2205 [2022-01-10 12:39:32,954 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 12:39:32,956 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 12:39:32,957 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 744 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:32,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 885 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 12:39:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-01-10 12:39:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.3285457809694794) internal successors, (1480), 1114 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1480 transitions. [2022-01-10 12:39:33,009 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1480 transitions. Word has length 102 [2022-01-10 12:39:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:33,009 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1480 transitions. [2022-01-10 12:39:33,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1480 transitions. [2022-01-10 12:39:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:33,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:33,010 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] [2022-01-10 12:39:33,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:39:33,010 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:33,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1074597560, now seen corresponding path program 1 times [2022-01-10 12:39:33,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:33,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667997033] [2022-01-10 12:39:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:33,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:33,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:33,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667997033] [2022-01-10 12:39:33,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667997033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:33,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:33,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:39:33,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979035358] [2022-01-10 12:39:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:33,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:39:33,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:39:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:39:33,060 INFO L87 Difference]: Start difference. First operand 1115 states and 1480 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:33,224 INFO L93 Difference]: Finished difference Result 2785 states and 3728 transitions. [2022-01-10 12:39:33,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:39:33,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:33,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:33,230 INFO L225 Difference]: With dead ends: 2785 [2022-01-10 12:39:33,230 INFO L226 Difference]: Without dead ends: 1709 [2022-01-10 12:39:33,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:39:33,233 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 2223 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:33,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2223 Valid, 2184 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:39:33,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-01-10 12:39:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1121. [2022-01-10 12:39:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 1.3142857142857143) internal successors, (1472), 1120 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1472 transitions. [2022-01-10 12:39:33,304 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1472 transitions. Word has length 102 [2022-01-10 12:39:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:33,305 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1472 transitions. [2022-01-10 12:39:33,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1472 transitions. [2022-01-10 12:39:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:33,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:33,306 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] [2022-01-10 12:39:33,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:39:33,306 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1438869801, now seen corresponding path program 1 times [2022-01-10 12:39:33,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:33,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448928617] [2022-01-10 12:39:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:33,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:33,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:33,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448928617] [2022-01-10 12:39:33,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448928617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:33,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:33,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:39:33,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632022711] [2022-01-10 12:39:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:33,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:39:33,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:33,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:39:33,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:39:33,353 INFO L87 Difference]: Start difference. First operand 1121 states and 1472 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:33,513 INFO L93 Difference]: Finished difference Result 3118 states and 4122 transitions. [2022-01-10 12:39:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:39:33,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:33,520 INFO L225 Difference]: With dead ends: 3118 [2022-01-10 12:39:33,520 INFO L226 Difference]: Without dead ends: 2071 [2022-01-10 12:39:33,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:39:33,523 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 1709 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:33,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 2979 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:39:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-01-10 12:39:33,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1127. [2022-01-10 12:39:33,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.300177619893428) internal successors, (1464), 1126 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1464 transitions. [2022-01-10 12:39:33,589 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1464 transitions. Word has length 102 [2022-01-10 12:39:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:33,590 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1464 transitions. [2022-01-10 12:39:33,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1464 transitions. [2022-01-10 12:39:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:33,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:33,591 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] [2022-01-10 12:39:33,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:39:33,591 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash 511430454, now seen corresponding path program 1 times [2022-01-10 12:39:33,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:33,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300141089] [2022-01-10 12:39:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:33,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:33,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:33,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300141089] [2022-01-10 12:39:33,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300141089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:33,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:33,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:33,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241870682] [2022-01-10 12:39:33,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:33,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:33,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:33,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:33,633 INFO L87 Difference]: Start difference. First operand 1127 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:33,717 INFO L93 Difference]: Finished difference Result 2236 states and 2902 transitions. [2022-01-10 12:39:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:33,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:33,721 INFO L225 Difference]: With dead ends: 2236 [2022-01-10 12:39:33,721 INFO L226 Difference]: Without dead ends: 1127 [2022-01-10 12:39:33,722 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 12:39:33,723 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 809 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 12:39:33,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 809 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-10 12:39:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2022-01-10 12:39:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.2930728241563054) internal successors, (1456), 1126 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1456 transitions. [2022-01-10 12:39:33,780 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1456 transitions. Word has length 102 [2022-01-10 12:39:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:33,781 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1456 transitions. [2022-01-10 12:39:33,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1456 transitions. [2022-01-10 12:39:33,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:39:33,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:33,782 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] [2022-01-10 12:39:33,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:39:33,782 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1204532151, now seen corresponding path program 1 times [2022-01-10 12:39:33,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:33,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499536486] [2022-01-10 12:39:33,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:33,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:33,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:33,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499536486] [2022-01-10 12:39:33,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499536486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:33,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:33,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:33,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882352164] [2022-01-10 12:39:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:33,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:33,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:33,816 INFO L87 Difference]: Start difference. First operand 1127 states and 1456 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:33,941 INFO L93 Difference]: Finished difference Result 3227 states and 4147 transitions. [2022-01-10 12:39:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:33,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:39:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:33,948 INFO L225 Difference]: With dead ends: 3227 [2022-01-10 12:39:33,948 INFO L226 Difference]: Without dead ends: 2189 [2022-01-10 12:39:33,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:33,950 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 686 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1600 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 12:39:33,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1600 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-01-10 12:39:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2088. [2022-01-10 12:39:34,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 2087 states have (on average 1.2779108768567322) internal successors, (2667), 2087 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2667 transitions. [2022-01-10 12:39:34,077 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2667 transitions. Word has length 102 [2022-01-10 12:39:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:34,077 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 2667 transitions. [2022-01-10 12:39:34,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:34,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2667 transitions. [2022-01-10 12:39:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 12:39:34,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:34,078 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] [2022-01-10 12:39:34,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:39:34,078 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:34,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash 717353359, now seen corresponding path program 1 times [2022-01-10 12:39:34,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:34,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123524643] [2022-01-10 12:39:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:34,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:34,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:34,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123524643] [2022-01-10 12:39:34,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123524643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:34,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:34,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:34,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473997918] [2022-01-10 12:39:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:34,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:34,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:34,110 INFO L87 Difference]: Start difference. First operand 2088 states and 2667 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:34,292 INFO L93 Difference]: Finished difference Result 5826 states and 7427 transitions. [2022-01-10 12:39:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:34,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-10 12:39:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:34,303 INFO L225 Difference]: With dead ends: 5826 [2022-01-10 12:39:34,303 INFO L226 Difference]: Without dead ends: 3911 [2022-01-10 12:39:34,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:34,306 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 617 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:34,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1922 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2022-01-10 12:39:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3908. [2022-01-10 12:39:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 3907 states have (on average 1.2690043511645763) internal successors, (4958), 3907 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 4958 transitions. [2022-01-10 12:39:34,550 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 4958 transitions. Word has length 103 [2022-01-10 12:39:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:34,550 INFO L470 AbstractCegarLoop]: Abstraction has 3908 states and 4958 transitions. [2022-01-10 12:39:34,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 4958 transitions. [2022-01-10 12:39:34,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 12:39:34,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:34,552 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] [2022-01-10 12:39:34,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:39:34,553 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash -235848274, now seen corresponding path program 1 times [2022-01-10 12:39:34,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:34,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900951137] [2022-01-10 12:39:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:34,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:34,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:34,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900951137] [2022-01-10 12:39:34,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900951137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:34,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:34,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:34,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342246844] [2022-01-10 12:39:34,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:34,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:34,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:34,576 INFO L87 Difference]: Start difference. First operand 3908 states and 4958 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:34,765 INFO L93 Difference]: Finished difference Result 7477 states and 9506 transitions. [2022-01-10 12:39:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:34,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-10 12:39:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:34,784 INFO L225 Difference]: With dead ends: 7477 [2022-01-10 12:39:34,784 INFO L226 Difference]: Without dead ends: 3742 [2022-01-10 12:39:34,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:34,788 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 808 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 812 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 12:39:34,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 812 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2022-01-10 12:39:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2022-01-10 12:39:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.2713178294573644) internal successors, (4756), 3741 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4756 transitions. [2022-01-10 12:39:34,968 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4756 transitions. Word has length 103 [2022-01-10 12:39:34,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:34,968 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 4756 transitions. [2022-01-10 12:39:34,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4756 transitions. [2022-01-10 12:39:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 12:39:34,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:34,969 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] [2022-01-10 12:39:34,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:39:34,970 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1139650719, now seen corresponding path program 1 times [2022-01-10 12:39:34,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:34,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670620135] [2022-01-10 12:39:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:34,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:35,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:35,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670620135] [2022-01-10 12:39:35,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670620135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:35,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:35,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:35,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15913707] [2022-01-10 12:39:35,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:35,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:35,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:35,007 INFO L87 Difference]: Start difference. First operand 3742 states and 4756 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:35,332 INFO L93 Difference]: Finished difference Result 10820 states and 13732 transitions. [2022-01-10 12:39:35,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:35,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 12:39:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:35,342 INFO L225 Difference]: With dead ends: 10820 [2022-01-10 12:39:35,343 INFO L226 Difference]: Without dead ends: 7251 [2022-01-10 12:39:35,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:35,349 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 688 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:35,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1725 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:35,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2022-01-10 12:39:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 6992. [2022-01-10 12:39:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6992 states, 6991 states have (on average 1.2656272350164497) internal successors, (8848), 6991 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6992 states to 6992 states and 8848 transitions. [2022-01-10 12:39:35,748 INFO L78 Accepts]: Start accepts. Automaton has 6992 states and 8848 transitions. Word has length 104 [2022-01-10 12:39:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:35,748 INFO L470 AbstractCegarLoop]: Abstraction has 6992 states and 8848 transitions. [2022-01-10 12:39:35,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 6992 states and 8848 transitions. [2022-01-10 12:39:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 12:39:35,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:35,750 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] [2022-01-10 12:39:35,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:39:35,751 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1621398435, now seen corresponding path program 1 times [2022-01-10 12:39:35,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:35,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381152038] [2022-01-10 12:39:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:35,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:35,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:35,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381152038] [2022-01-10 12:39:35,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381152038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:35,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:35,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:35,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239030185] [2022-01-10 12:39:35,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:35,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:35,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:35,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:35,777 INFO L87 Difference]: Start difference. First operand 6992 states and 8848 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:36,118 INFO L93 Difference]: Finished difference Result 13733 states and 17392 transitions. [2022-01-10 12:39:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:36,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 12:39:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:36,128 INFO L225 Difference]: With dead ends: 13733 [2022-01-10 12:39:36,129 INFO L226 Difference]: Without dead ends: 6828 [2022-01-10 12:39:36,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:36,138 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 806 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 811 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 12:39:36,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 811 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6828 states. [2022-01-10 12:39:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6828 to 6828. [2022-01-10 12:39:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6828 states, 6827 states have (on average 1.2670279771495532) internal successors, (8650), 6827 states have internal predecessors, (8650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 8650 transitions. [2022-01-10 12:39:36,463 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 8650 transitions. Word has length 104 [2022-01-10 12:39:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:36,463 INFO L470 AbstractCegarLoop]: Abstraction has 6828 states and 8650 transitions. [2022-01-10 12:39:36,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 8650 transitions. [2022-01-10 12:39:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 12:39:36,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:36,464 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] [2022-01-10 12:39:36,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:39:36,464 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:36,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1418390082, now seen corresponding path program 1 times [2022-01-10 12:39:36,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:36,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3251833] [2022-01-10 12:39:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:36,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:36,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:36,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3251833] [2022-01-10 12:39:36,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3251833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:36,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:36,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:36,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984479024] [2022-01-10 12:39:36,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:36,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:36,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:36,493 INFO L87 Difference]: Start difference. First operand 6828 states and 8650 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:37,055 INFO L93 Difference]: Finished difference Result 19770 states and 25014 transitions. [2022-01-10 12:39:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:37,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 12:39:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:37,074 INFO L225 Difference]: With dead ends: 19770 [2022-01-10 12:39:37,074 INFO L226 Difference]: Without dead ends: 13115 [2022-01-10 12:39:37,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:37,081 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 688 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:37,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1705 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13115 states. [2022-01-10 12:39:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 12712. [2022-01-10 12:39:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12712 states, 12711 states have (on average 1.2626858626386595) internal successors, (16050), 12711 states have internal predecessors, (16050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12712 states to 12712 states and 16050 transitions. [2022-01-10 12:39:37,807 INFO L78 Accepts]: Start accepts. Automaton has 12712 states and 16050 transitions. Word has length 105 [2022-01-10 12:39:37,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:37,808 INFO L470 AbstractCegarLoop]: Abstraction has 12712 states and 16050 transitions. [2022-01-10 12:39:37,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 12712 states and 16050 transitions. [2022-01-10 12:39:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 12:39:37,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:37,810 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] [2022-01-10 12:39:37,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:39:37,810 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:37,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1095647074, now seen corresponding path program 1 times [2022-01-10 12:39:37,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:37,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905867899] [2022-01-10 12:39:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:37,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:37,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:37,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905867899] [2022-01-10 12:39:37,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905867899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:37,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:37,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:37,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329120982] [2022-01-10 12:39:37,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:37,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:37,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:37,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:37,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:37,834 INFO L87 Difference]: Start difference. First operand 12712 states and 16050 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:38,407 INFO L93 Difference]: Finished difference Result 25161 states and 31784 transitions. [2022-01-10 12:39:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:38,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 12:39:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:38,423 INFO L225 Difference]: With dead ends: 25161 [2022-01-10 12:39:38,423 INFO L226 Difference]: Without dead ends: 12550 [2022-01-10 12:39:38,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:38,438 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 804 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 810 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 12:39:38,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 810 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12550 states. [2022-01-10 12:39:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12550 to 12550. [2022-01-10 12:39:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12550 states, 12549 states have (on average 1.2635269742608972) internal successors, (15856), 12549 states have internal predecessors, (15856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12550 states to 12550 states and 15856 transitions. [2022-01-10 12:39:39,079 INFO L78 Accepts]: Start accepts. Automaton has 12550 states and 15856 transitions. Word has length 105 [2022-01-10 12:39:39,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:39,079 INFO L470 AbstractCegarLoop]: Abstraction has 12550 states and 15856 transitions. [2022-01-10 12:39:39,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 12550 states and 15856 transitions. [2022-01-10 12:39:39,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 12:39:39,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:39,081 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] [2022-01-10 12:39:39,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:39:39,081 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:39,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:39,081 INFO L85 PathProgramCache]: Analyzing trace with hash 621410543, now seen corresponding path program 1 times [2022-01-10 12:39:39,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:39,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808447431] [2022-01-10 12:39:39,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:39,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:39,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:39,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808447431] [2022-01-10 12:39:39,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808447431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:39,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:39,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:39,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600916876] [2022-01-10 12:39:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:39,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:39,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:39,111 INFO L87 Difference]: Start difference. First operand 12550 states and 15856 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:40,202 INFO L93 Difference]: Finished difference Result 36204 states and 45676 transitions. [2022-01-10 12:39:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:40,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 12:39:40,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:40,237 INFO L225 Difference]: With dead ends: 36204 [2022-01-10 12:39:40,237 INFO L226 Difference]: Without dead ends: 23827 [2022-01-10 12:39:40,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:40,250 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 642 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1688 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 12:39:40,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1688 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23827 states. [2022-01-10 12:39:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23827 to 23248. [2022-01-10 12:39:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23248 states, 23247 states have (on average 1.2595173570783327) internal successors, (29280), 23247 states have internal predecessors, (29280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23248 states to 23248 states and 29280 transitions. [2022-01-10 12:39:41,558 INFO L78 Accepts]: Start accepts. Automaton has 23248 states and 29280 transitions. Word has length 106 [2022-01-10 12:39:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:41,558 INFO L470 AbstractCegarLoop]: Abstraction has 23248 states and 29280 transitions. [2022-01-10 12:39:41,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 23248 states and 29280 transitions. [2022-01-10 12:39:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 12:39:41,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:41,561 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] [2022-01-10 12:39:41,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:39:41,561 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash -331791090, now seen corresponding path program 1 times [2022-01-10 12:39:41,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:41,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342776183] [2022-01-10 12:39:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:41,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:41,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:41,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342776183] [2022-01-10 12:39:41,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342776183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:41,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:41,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:41,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182667792] [2022-01-10 12:39:41,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:41,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:41,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:41,582 INFO L87 Difference]: Start difference. First operand 23248 states and 29280 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:42,736 INFO L93 Difference]: Finished difference Result 46221 states and 58232 transitions. [2022-01-10 12:39:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:42,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 12:39:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:42,770 INFO L225 Difference]: With dead ends: 46221 [2022-01-10 12:39:42,770 INFO L226 Difference]: Without dead ends: 23088 [2022-01-10 12:39:42,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:42,789 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 802 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 809 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 12:39:42,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 809 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23088 states. [2022-01-10 12:39:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23088 to 23088. [2022-01-10 12:39:44,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23088 states, 23087 states have (on average 1.2600164594793606) internal successors, (29090), 23087 states have internal predecessors, (29090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23088 states to 23088 states and 29090 transitions. [2022-01-10 12:39:44,053 INFO L78 Accepts]: Start accepts. Automaton has 23088 states and 29090 transitions. Word has length 106 [2022-01-10 12:39:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:44,053 INFO L470 AbstractCegarLoop]: Abstraction has 23088 states and 29090 transitions. [2022-01-10 12:39:44,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 23088 states and 29090 transitions. [2022-01-10 12:39:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 12:39:44,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:44,056 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] [2022-01-10 12:39:44,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 12:39:44,056 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -756114735, now seen corresponding path program 1 times [2022-01-10 12:39:44,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:44,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123259689] [2022-01-10 12:39:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:44,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:44,086 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 12:39:44,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:44,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123259689] [2022-01-10 12:39:44,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123259689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:44,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:44,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:44,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891808624] [2022-01-10 12:39:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:44,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:44,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:44,087 INFO L87 Difference]: Start difference. First operand 23088 states and 29090 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:46,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:46,298 INFO L93 Difference]: Finished difference Result 66126 states and 83166 transitions. [2022-01-10 12:39:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 12:39:46,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:46,361 INFO L225 Difference]: With dead ends: 66126 [2022-01-10 12:39:46,361 INFO L226 Difference]: Without dead ends: 43211 [2022-01-10 12:39:46,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:46,394 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 688 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1611 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 12:39:46,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1611 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43211 states. [2022-01-10 12:39:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43211 to 42312. [2022-01-10 12:39:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42312 states, 42311 states have (on average 1.2554182127579117) internal successors, (53118), 42311 states have internal predecessors, (53118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42312 states to 42312 states and 53118 transitions. [2022-01-10 12:39:48,737 INFO L78 Accepts]: Start accepts. Automaton has 42312 states and 53118 transitions. Word has length 107 [2022-01-10 12:39:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:48,738 INFO L470 AbstractCegarLoop]: Abstraction has 42312 states and 53118 transitions. [2022-01-10 12:39:48,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 42312 states and 53118 transitions. [2022-01-10 12:39:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 12:39:48,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:48,746 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] [2022-01-10 12:39:48,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 12:39:48,747 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 261623089, now seen corresponding path program 1 times [2022-01-10 12:39:48,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:48,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965146111] [2022-01-10 12:39:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:48,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:48,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:48,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965146111] [2022-01-10 12:39:48,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965146111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:48,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:48,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:39:48,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417538052] [2022-01-10 12:39:48,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:48,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:48,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:48,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:48,768 INFO L87 Difference]: Start difference. First operand 42312 states and 53118 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:51,131 INFO L93 Difference]: Finished difference Result 84337 states and 105896 transitions. [2022-01-10 12:39:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 12:39:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:51,199 INFO L225 Difference]: With dead ends: 84337 [2022-01-10 12:39:51,199 INFO L226 Difference]: Without dead ends: 42154 [2022-01-10 12:39:51,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:51,238 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 800 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 808 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 12:39:51,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 808 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42154 states. [2022-01-10 12:39:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42154 to 42154. [2022-01-10 12:39:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42154 states, 42153 states have (on average 1.2557113372713686) internal successors, (52932), 42153 states have internal predecessors, (52932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42154 states to 42154 states and 52932 transitions. [2022-01-10 12:39:53,647 INFO L78 Accepts]: Start accepts. Automaton has 42154 states and 52932 transitions. Word has length 107 [2022-01-10 12:39:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:39:53,647 INFO L470 AbstractCegarLoop]: Abstraction has 42154 states and 52932 transitions. [2022-01-10 12:39:53,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 42154 states and 52932 transitions. [2022-01-10 12:39:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 12:39:53,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:39:53,649 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] [2022-01-10 12:39:53,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 12:39:53,650 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:39:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:39:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash -891668766, now seen corresponding path program 1 times [2022-01-10 12:39:53,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:39:53,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679686548] [2022-01-10 12:39:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:39:53,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:39:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:39:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:39:53,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:39:53,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679686548] [2022-01-10 12:39:53,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679686548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:39:53,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:39:53,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:39:53,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023653155] [2022-01-10 12:39:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:39:53,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:39:53,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:39:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:39:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:39:53,696 INFO L87 Difference]: Start difference. First operand 42154 states and 52932 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:39:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:39:58,062 INFO L93 Difference]: Finished difference Result 125127 states and 157152 transitions. [2022-01-10 12:39:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:39:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 12:39:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:39:58,215 INFO L225 Difference]: With dead ends: 125127 [2022-01-10 12:39:58,215 INFO L226 Difference]: Without dead ends: 83106 [2022-01-10 12:39:58,264 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 12:39:58,264 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 678 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:39:58,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1482 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:39:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83106 states. [2022-01-10 12:40:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83106 to 82850. [2022-01-10 12:40:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82850 states, 82849 states have (on average 1.2482709507658512) internal successors, (103418), 82849 states have internal predecessors, (103418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:40:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82850 states to 82850 states and 103418 transitions. [2022-01-10 12:40:03,158 INFO L78 Accepts]: Start accepts. Automaton has 82850 states and 103418 transitions. Word has length 108 [2022-01-10 12:40:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:40:03,158 INFO L470 AbstractCegarLoop]: Abstraction has 82850 states and 103418 transitions. [2022-01-10 12:40:03,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:40:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 82850 states and 103418 transitions. [2022-01-10 12:40:03,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 12:40:03,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:40:03,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:40:03,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 12:40:03,177 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:40:03,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:40:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash 144935144, now seen corresponding path program 1 times [2022-01-10 12:40:03,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:40:03,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34957218] [2022-01-10 12:40:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:40:03,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:40:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:40:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:40:03,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:40:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34957218] [2022-01-10 12:40:03,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34957218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:40:03,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:40:03,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:40:03,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134781839] [2022-01-10 12:40:03,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:40:03,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:40:03,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:40:03,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:40:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:40:03,219 INFO L87 Difference]: Start difference. First operand 82850 states and 103418 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:40:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:40:11,919 INFO L93 Difference]: Finished difference Result 247335 states and 308500 transitions. [2022-01-10 12:40:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:40:11,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-10 12:40:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:40:12,144 INFO L225 Difference]: With dead ends: 247335 [2022-01-10 12:40:12,145 INFO L226 Difference]: Without dead ends: 124060 [2022-01-10 12:40:12,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:40:12,295 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 760 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:40:12,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2356 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:40:12,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124060 states. [2022-01-10 12:40:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124060 to 124060. [2022-01-10 12:40:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124060 states, 124059 states have (on average 1.2482770294779097) internal successors, (154860), 124059 states have internal predecessors, (154860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:40:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124060 states to 124060 states and 154860 transitions. [2022-01-10 12:40:19,601 INFO L78 Accepts]: Start accepts. Automaton has 124060 states and 154860 transitions. Word has length 132 [2022-01-10 12:40:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:40:19,602 INFO L470 AbstractCegarLoop]: Abstraction has 124060 states and 154860 transitions. [2022-01-10 12:40:19,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:40:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 124060 states and 154860 transitions. [2022-01-10 12:40:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-10 12:40:19,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:40:19,669 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:40:19,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 12:40:19,670 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:40:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:40:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash 862132781, now seen corresponding path program 1 times [2022-01-10 12:40:19,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:40:19,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287655168] [2022-01-10 12:40:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:40:19,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:40:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:40:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 12:40:19,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:40:19,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287655168] [2022-01-10 12:40:19,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287655168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:40:19,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:40:19,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:40:19,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787128916] [2022-01-10 12:40:19,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:40:19,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:40:19,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:40:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:40:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:40:19,767 INFO L87 Difference]: Start difference. First operand 124060 states and 154860 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:40:28,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:40:28,714 INFO L93 Difference]: Finished difference Result 285555 states and 356242 transitions. [2022-01-10 12:40:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:40:28,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-01-10 12:40:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:40:29,075 INFO L225 Difference]: With dead ends: 285555 [2022-01-10 12:40:29,075 INFO L226 Difference]: Without dead ends: 161614 [2022-01-10 12:40:29,244 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 12:40:29,244 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 594 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:40:29,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1480 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:40:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161614 states.