/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:01:31,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:01:31,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:01:31,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:01:31,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:01:31,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:01:31,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:01:31,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:01:31,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:01:31,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:01:31,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:01:31,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:01:31,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:01:31,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:01:31,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:01:31,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:01:31,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:01:31,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:01:31,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:01:31,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:01:31,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:01:31,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:01:31,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:01:31,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:01:31,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:01:31,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:01:31,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:01:31,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:01:31,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:01:31,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:01:31,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:01:31,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:01:31,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:01:31,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:01:31,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:01:31,978 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:01:31,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:01:31,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:01:31,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:01:31,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:01:31,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:01:31,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:01:31,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:01:31,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:01:31,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:01:31,981 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:01:31,981 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:01:32,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:01:32,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:01:32,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:01:32,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:01:32,218 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:01:32,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-01-10 19:01:32,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e30e09f/90555616eb48496f86054cc3891c63b4/FLAG632b9b2ae [2022-01-10 19:01:32,650 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:01:32,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-01-10 19:01:32,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e30e09f/90555616eb48496f86054cc3891c63b4/FLAG632b9b2ae [2022-01-10 19:01:32,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e30e09f/90555616eb48496f86054cc3891c63b4 [2022-01-10 19:01:32,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:01:32,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:01:32,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:01:32,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:01:32,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:01:32,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:01:32" (1/1) ... [2022-01-10 19:01:32,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b02509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:32, skipping insertion in model container [2022-01-10 19:01:32,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:01:32" (1/1) ... [2022-01-10 19:01:32,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:01:32,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:01:33,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-01-10 19:01:33,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:01:33,115 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:01:33,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-01-10 19:01:33,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:01:33,213 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:01:33,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33 WrapperNode [2022-01-10 19:01:33,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:01:33,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:01:33,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:01:33,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:01:33,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,289 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 811 [2022-01-10 19:01:33,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:01:33,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:01:33,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:01:33,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:01:33,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:01:33,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:01:33,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:01:33,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:01:33,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (1/1) ... [2022-01-10 19:01:33,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:01:33,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:01:33,373 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 19:01:33,379 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 19:01:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:01:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:01:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:01:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:01:33,487 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:01:33,489 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:01:34,169 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:01:34,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:01:34,179 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:01:34,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:01:34 BoogieIcfgContainer [2022-01-10 19:01:34,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:01:34,182 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:01:34,182 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:01:34,183 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:01:34,186 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:01:34" (1/1) ... [2022-01-10 19:01:34,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:01:34 BasicIcfg [2022-01-10 19:01:34,734 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:01:34,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:01:34,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:01:34,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:01:34,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:01:32" (1/4) ... [2022-01-10 19:01:34,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f21b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:01:34, skipping insertion in model container [2022-01-10 19:01:34,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:33" (2/4) ... [2022-01-10 19:01:34,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f21b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:01:34, skipping insertion in model container [2022-01-10 19:01:34,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:01:34" (3/4) ... [2022-01-10 19:01:34,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f21b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:01:34, skipping insertion in model container [2022-01-10 19:01:34,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:01:34" (4/4) ... [2022-01-10 19:01:34,742 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.cTransformedIcfg [2022-01-10 19:01:34,746 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:01:34,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:01:34,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:01:34,794 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 19:01:34,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:01:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 19:01:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 19:01:34,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:34,823 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] [2022-01-10 19:01:34,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:34,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1197643430, now seen corresponding path program 1 times [2022-01-10 19:01:34,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:34,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831860406] [2022-01-10 19:01:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:34,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:35,246 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 19:01:35,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:35,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831860406] [2022-01-10 19:01:35,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831860406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:35,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:35,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:35,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475790831] [2022-01-10 19:01:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:35,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:35,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:35,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:35,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:35,280 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 0 states have call successors, (0), 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 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 19:01:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:35,394 INFO L93 Difference]: Finished difference Result 547 states and 891 transitions. [2022-01-10 19:01:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:35,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 19:01:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:35,415 INFO L225 Difference]: With dead ends: 547 [2022-01-10 19:01:35,415 INFO L226 Difference]: Without dead ends: 367 [2022-01-10 19:01:35,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:35,422 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 294 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:35,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 716 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-10 19:01:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2022-01-10 19:01:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.6181318681318682) internal successors, (589), 364 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 19:01:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 589 transitions. [2022-01-10 19:01:35,487 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 589 transitions. Word has length 79 [2022-01-10 19:01:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:35,488 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 589 transitions. [2022-01-10 19:01:35,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 19:01:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 589 transitions. [2022-01-10 19:01:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:01:35,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:35,491 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] [2022-01-10 19:01:35,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:01:35,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1121151334, now seen corresponding path program 1 times [2022-01-10 19:01:35,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:35,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63576976] [2022-01-10 19:01:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:35,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:35,695 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 19:01:35,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:35,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63576976] [2022-01-10 19:01:35,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63576976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:35,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:35,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:35,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155039864] [2022-01-10 19:01:35,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:35,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:35,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:35,701 INFO L87 Difference]: Start difference. First operand 365 states and 589 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 19:01:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:35,754 INFO L93 Difference]: Finished difference Result 899 states and 1436 transitions. [2022-01-10 19:01:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 19:01:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:35,757 INFO L225 Difference]: With dead ends: 899 [2022-01-10 19:01:35,758 INFO L226 Difference]: Without dead ends: 639 [2022-01-10 19:01:35,764 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 19:01:35,765 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 269 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:35,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 710 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-01-10 19:01:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 637. [2022-01-10 19:01:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.5959119496855345) internal successors, (1015), 636 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 19:01:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1015 transitions. [2022-01-10 19:01:35,794 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1015 transitions. Word has length 80 [2022-01-10 19:01:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:35,795 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1015 transitions. [2022-01-10 19:01:35,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 19:01:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1015 transitions. [2022-01-10 19:01:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 19:01:35,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:35,804 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] [2022-01-10 19:01:35,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:01:35,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:35,811 INFO L85 PathProgramCache]: Analyzing trace with hash -848773304, now seen corresponding path program 1 times [2022-01-10 19:01:35,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:35,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918337811] [2022-01-10 19:01:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:35,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:36,011 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 19:01:36,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:36,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918337811] [2022-01-10 19:01:36,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918337811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:36,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:36,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:36,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078327171] [2022-01-10 19:01:36,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:36,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:36,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:36,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:36,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:36,013 INFO L87 Difference]: Start difference. First operand 637 states and 1015 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 19:01:36,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:36,061 INFO L93 Difference]: Finished difference Result 1527 states and 2422 transitions. [2022-01-10 19:01:36,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:36,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 19:01:36,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:36,067 INFO L225 Difference]: With dead ends: 1527 [2022-01-10 19:01:36,067 INFO L226 Difference]: Without dead ends: 1107 [2022-01-10 19:01:36,070 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 19:01:36,073 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 252 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:36,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 726 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-10 19:01:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1105. [2022-01-10 19:01:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.578804347826087) internal successors, (1743), 1104 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states 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 19:01:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1743 transitions. [2022-01-10 19:01:36,097 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1743 transitions. Word has length 81 [2022-01-10 19:01:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 1743 transitions. [2022-01-10 19:01:36,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 19:01:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1743 transitions. [2022-01-10 19:01:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 19:01:36,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:36,100 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] [2022-01-10 19:01:36,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:01:36,100 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1697237124, now seen corresponding path program 1 times [2022-01-10 19:01:36,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:36,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125989254] [2022-01-10 19:01:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:36,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:36,257 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 19:01:36,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:36,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125989254] [2022-01-10 19:01:36,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125989254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:36,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:36,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:36,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027652955] [2022-01-10 19:01:36,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:36,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:36,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:36,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:36,260 INFO L87 Difference]: Start difference. First operand 1105 states and 1743 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 19:01:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:36,326 INFO L93 Difference]: Finished difference Result 2583 states and 4066 transitions. [2022-01-10 19:01:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 19:01:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:36,333 INFO L225 Difference]: With dead ends: 2583 [2022-01-10 19:01:36,334 INFO L226 Difference]: Without dead ends: 1889 [2022-01-10 19:01:36,335 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 19:01:36,340 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 235 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:36,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 742 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-10 19:01:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2022-01-10 19:01:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 1.5625662778366913) internal successors, (2947), 1886 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 19:01:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2947 transitions. [2022-01-10 19:01:36,383 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2947 transitions. Word has length 82 [2022-01-10 19:01:36,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:36,384 INFO L470 AbstractCegarLoop]: Abstraction has 1887 states and 2947 transitions. [2022-01-10 19:01:36,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 19:01:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2947 transitions. [2022-01-10 19:01:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 19:01:36,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:36,389 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] [2022-01-10 19:01:36,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:01:36,390 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1024249366, now seen corresponding path program 1 times [2022-01-10 19:01:36,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:36,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625812366] [2022-01-10 19:01:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:36,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:36,553 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 19:01:36,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:36,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625812366] [2022-01-10 19:01:36,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625812366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:36,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:36,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:36,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388409107] [2022-01-10 19:01:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:36,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:36,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:36,555 INFO L87 Difference]: Start difference. First operand 1887 states and 2947 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 19:01:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:36,625 INFO L93 Difference]: Finished difference Result 4289 states and 6686 transitions. [2022-01-10 19:01:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 19:01:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:36,636 INFO L225 Difference]: With dead ends: 4289 [2022-01-10 19:01:36,636 INFO L226 Difference]: Without dead ends: 3149 [2022-01-10 19:01:36,638 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 19:01:36,639 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 218 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:36,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 758 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2022-01-10 19:01:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3147. [2022-01-10 19:01:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 3146 states have (on average 1.5432294977749523) internal successors, (4855), 3146 states have internal predecessors, (4855), 0 states have call successors, (0), 0 states 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 19:01:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4855 transitions. [2022-01-10 19:01:36,731 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4855 transitions. Word has length 83 [2022-01-10 19:01:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:36,732 INFO L470 AbstractCegarLoop]: Abstraction has 3147 states and 4855 transitions. [2022-01-10 19:01:36,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 19:01:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4855 transitions. [2022-01-10 19:01:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:01:36,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:36,743 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] [2022-01-10 19:01:36,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:01:36,743 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1063234978, now seen corresponding path program 1 times [2022-01-10 19:01:36,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:36,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303033234] [2022-01-10 19:01:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:36,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:36,914 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 19:01:36,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:36,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303033234] [2022-01-10 19:01:36,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303033234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:36,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:36,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:01:36,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454446174] [2022-01-10 19:01:36,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:36,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:01:36,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:36,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:01:36,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:01:36,916 INFO L87 Difference]: Start difference. First operand 3147 states and 4855 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:01:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:37,017 INFO L93 Difference]: Finished difference Result 5003 states and 7743 transitions. [2022-01-10 19:01:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:01:37,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 19:01:37,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:37,024 INFO L225 Difference]: With dead ends: 5003 [2022-01-10 19:01:37,024 INFO L226 Difference]: Without dead ends: 1889 [2022-01-10 19:01:37,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:01:37,028 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 53 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:37,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 825 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:01:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-10 19:01:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2022-01-10 19:01:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.5471398305084745) internal successors, (2921), 1888 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states 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 19:01:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2921 transitions. [2022-01-10 19:01:37,109 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2921 transitions. Word has length 84 [2022-01-10 19:01:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:37,109 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2921 transitions. [2022-01-10 19:01:37,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:01:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2921 transitions. [2022-01-10 19:01:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 19:01:37,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:37,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:37,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:01:37,114 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 22028217, now seen corresponding path program 1 times [2022-01-10 19:01:37,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:37,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511371024] [2022-01-10 19:01:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:37,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:37,382 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 19:01:37,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:37,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511371024] [2022-01-10 19:01:37,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511371024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:37,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:37,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:01:37,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537102115] [2022-01-10 19:01:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:37,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:01:37,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:01:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:01:37,384 INFO L87 Difference]: Start difference. First operand 1889 states and 2921 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 19:01:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:37,430 INFO L93 Difference]: Finished difference Result 3707 states and 5756 transitions. [2022-01-10 19:01:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:01:37,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-01-10 19:01:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:37,437 INFO L225 Difference]: With dead ends: 3707 [2022-01-10 19:01:37,437 INFO L226 Difference]: Without dead ends: 1889 [2022-01-10 19:01:37,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:01:37,440 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 1 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:37,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 819 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-10 19:01:37,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2022-01-10 19:01:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.5455508474576272) internal successors, (2918), 1888 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states 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 19:01:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2918 transitions. [2022-01-10 19:01:37,480 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2918 transitions. Word has length 119 [2022-01-10 19:01:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:37,481 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2918 transitions. [2022-01-10 19:01:37,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 19:01:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2918 transitions. [2022-01-10 19:01:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 19:01:37,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:37,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:37,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:01:37,485 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1784765163, now seen corresponding path program 1 times [2022-01-10 19:01:37,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:37,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126142313] [2022-01-10 19:01:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:37,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:37,625 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 19:01:37,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:37,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126142313] [2022-01-10 19:01:37,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126142313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:37,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:37,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:37,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333334158] [2022-01-10 19:01:37,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:37,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:37,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:37,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:37,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:37,627 INFO L87 Difference]: Start difference. First operand 1889 states and 2918 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 19:01:39,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:01:41,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:01:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:42,135 INFO L93 Difference]: Finished difference Result 4700 states and 7239 transitions. [2022-01-10 19:01:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:42,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-10 19:01:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:42,146 INFO L225 Difference]: With dead ends: 4700 [2022-01-10 19:01:42,147 INFO L226 Difference]: Without dead ends: 2882 [2022-01-10 19:01:42,150 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 19:01:42,150 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 167 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:42,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 670 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 19:01:42,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-01-10 19:01:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2880. [2022-01-10 19:01:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2879 states have (on average 1.4956582146578674) internal successors, (4306), 2879 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states 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 19:01:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4306 transitions. [2022-01-10 19:01:42,259 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4306 transitions. Word has length 121 [2022-01-10 19:01:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:42,259 INFO L470 AbstractCegarLoop]: Abstraction has 2880 states and 4306 transitions. [2022-01-10 19:01:42,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 19:01:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4306 transitions. [2022-01-10 19:01:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 19:01:42,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:42,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:42,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:01:42,265 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:42,266 INFO L85 PathProgramCache]: Analyzing trace with hash 643810842, now seen corresponding path program 1 times [2022-01-10 19:01:42,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:42,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853674118] [2022-01-10 19:01:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:42,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:42,430 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 19:01:42,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:42,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853674118] [2022-01-10 19:01:42,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853674118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:42,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:42,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:42,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502720542] [2022-01-10 19:01:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:42,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:42,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:42,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:42,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:42,432 INFO L87 Difference]: Start difference. First operand 2880 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 19:01:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:44,890 INFO L93 Difference]: Finished difference Result 7159 states and 10627 transitions. [2022-01-10 19:01:44,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:44,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 19:01:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:44,905 INFO L225 Difference]: With dead ends: 7159 [2022-01-10 19:01:44,906 INFO L226 Difference]: Without dead ends: 5125 [2022-01-10 19:01:44,909 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 19:01:44,910 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 158 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:44,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 565 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 19:01:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-01-10 19:01:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 5123. [2022-01-10 19:01:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 1.4714955095665756) internal successors, (7537), 5122 states have internal predecessors, (7537), 0 states have call successors, (0), 0 states 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 19:01:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 7537 transitions. [2022-01-10 19:01:45,573 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 7537 transitions. Word has length 122 [2022-01-10 19:01:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:45,573 INFO L470 AbstractCegarLoop]: Abstraction has 5123 states and 7537 transitions. [2022-01-10 19:01:45,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 19:01:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 7537 transitions. [2022-01-10 19:01:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:01:45,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:45,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:45,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:01:45,583 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:45,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:45,583 INFO L85 PathProgramCache]: Analyzing trace with hash 204679678, now seen corresponding path program 1 times [2022-01-10 19:01:45,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353462778] [2022-01-10 19:01:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:45,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:45,863 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 19:01:45,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:45,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353462778] [2022-01-10 19:01:45,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353462778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:45,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:45,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:01:45,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641763066] [2022-01-10 19:01:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:45,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:01:45,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:01:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:01:45,865 INFO L87 Difference]: Start difference. First operand 5123 states and 7537 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:46,550 INFO L93 Difference]: Finished difference Result 8869 states and 13010 transitions. [2022-01-10 19:01:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:01:46,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:01:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:46,573 INFO L225 Difference]: With dead ends: 8869 [2022-01-10 19:01:46,573 INFO L226 Difference]: Without dead ends: 5031 [2022-01-10 19:01:46,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:01:46,579 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:46,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 810 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:46,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2022-01-10 19:01:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4560. [2022-01-10 19:01:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.45689844264093) internal successors, (6642), 4559 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states 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 19:01:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 6642 transitions. [2022-01-10 19:01:47,264 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 6642 transitions. Word has length 124 [2022-01-10 19:01:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:47,264 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 6642 transitions. [2022-01-10 19:01:47,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 6642 transitions. [2022-01-10 19:01:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:01:47,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:47,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:47,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:01:47,272 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash 969193240, now seen corresponding path program 1 times [2022-01-10 19:01:47,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:47,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943808175] [2022-01-10 19:01:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:47,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:01:47,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:47,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943808175] [2022-01-10 19:01:47,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943808175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:47,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:47,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:47,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634206483] [2022-01-10 19:01:47,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:47,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:47,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:47,460 INFO L87 Difference]: Start difference. First operand 4560 states and 6642 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:49,314 INFO L93 Difference]: Finished difference Result 11551 states and 16872 transitions. [2022-01-10 19:01:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:49,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:01:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:49,331 INFO L225 Difference]: With dead ends: 11551 [2022-01-10 19:01:49,331 INFO L226 Difference]: Without dead ends: 7821 [2022-01-10 19:01:49,336 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 19:01:49,337 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 148 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:49,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 507 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 19:01:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7821 states. [2022-01-10 19:01:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7821 to 7596. [2022-01-10 19:01:50,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7596 states, 7595 states have (on average 1.4563528637261356) internal successors, (11061), 7595 states have internal predecessors, (11061), 0 states have call successors, (0), 0 states 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 19:01:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7596 states to 7596 states and 11061 transitions. [2022-01-10 19:01:50,709 INFO L78 Accepts]: Start accepts. Automaton has 7596 states and 11061 transitions. Word has length 127 [2022-01-10 19:01:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:50,710 INFO L470 AbstractCegarLoop]: Abstraction has 7596 states and 11061 transitions. [2022-01-10 19:01:50,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7596 states and 11061 transitions. [2022-01-10 19:01:50,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:01:50,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:50,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:50,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:01:50,720 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:50,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1790268456, now seen corresponding path program 1 times [2022-01-10 19:01:50,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:50,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794994874] [2022-01-10 19:01:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:50,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:50,862 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 19:01:50,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:50,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794994874] [2022-01-10 19:01:50,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794994874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:50,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:50,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:50,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964580954] [2022-01-10 19:01:50,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:50,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:50,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:50,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:50,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:50,863 INFO L87 Difference]: Start difference. First operand 7596 states and 11061 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:52,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:52,080 INFO L93 Difference]: Finished difference Result 14050 states and 20531 transitions. [2022-01-10 19:01:52,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:52,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:01:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:52,093 INFO L225 Difference]: With dead ends: 14050 [2022-01-10 19:01:52,094 INFO L226 Difference]: Without dead ends: 7246 [2022-01-10 19:01:52,101 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 19:01:52,101 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 146 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:52,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 494 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7246 states. [2022-01-10 19:01:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7246 to 7244. [2022-01-10 19:01:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7244 states, 7243 states have (on average 1.447880712411984) internal successors, (10487), 7243 states have internal predecessors, (10487), 0 states have call successors, (0), 0 states 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 19:01:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7244 states to 7244 states and 10487 transitions. [2022-01-10 19:01:53,443 INFO L78 Accepts]: Start accepts. Automaton has 7244 states and 10487 transitions. Word has length 127 [2022-01-10 19:01:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:53,443 INFO L470 AbstractCegarLoop]: Abstraction has 7244 states and 10487 transitions. [2022-01-10 19:01:53,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7244 states and 10487 transitions. [2022-01-10 19:01:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:01:53,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:53,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:53,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:01:53,448 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1510034784, now seen corresponding path program 1 times [2022-01-10 19:01:53,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:53,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938978820] [2022-01-10 19:01:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:53,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:53,607 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 19:01:53,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:53,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938978820] [2022-01-10 19:01:53,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938978820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:53,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:53,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:53,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305921112] [2022-01-10 19:01:53,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:53,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:53,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:53,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:53,608 INFO L87 Difference]: Start difference. First operand 7244 states and 10487 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:54,234 INFO L93 Difference]: Finished difference Result 10470 states and 15173 transitions. [2022-01-10 19:01:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:54,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:01:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:54,241 INFO L225 Difference]: With dead ends: 10470 [2022-01-10 19:01:54,241 INFO L226 Difference]: Without dead ends: 3746 [2022-01-10 19:01:54,248 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 19:01:54,251 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 129 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:54,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 465 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:54,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2022-01-10 19:01:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3744. [2022-01-10 19:01:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 1.4338765695965803) internal successors, (5367), 3743 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states 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 19:01:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5367 transitions. [2022-01-10 19:01:54,880 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5367 transitions. Word has length 127 [2022-01-10 19:01:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:54,881 INFO L470 AbstractCegarLoop]: Abstraction has 3744 states and 5367 transitions. [2022-01-10 19:01:54,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5367 transitions. [2022-01-10 19:01:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:01:54,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:54,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:54,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:01:54,884 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash 747286188, now seen corresponding path program 1 times [2022-01-10 19:01:54,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:54,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135769620] [2022-01-10 19:01:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:54,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:01:55,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:55,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135769620] [2022-01-10 19:01:55,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135769620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:55,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:55,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:55,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863184615] [2022-01-10 19:01:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:55,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:55,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:55,013 INFO L87 Difference]: Start difference. First operand 3744 states and 5367 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:55,357 INFO L93 Difference]: Finished difference Result 5350 states and 7677 transitions. [2022-01-10 19:01:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:01:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:55,361 INFO L225 Difference]: With dead ends: 5350 [2022-01-10 19:01:55,361 INFO L226 Difference]: Without dead ends: 1942 [2022-01-10 19:01:55,364 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 19:01:55,365 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 112 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:55,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 436 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2022-01-10 19:01:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1940. [2022-01-10 19:01:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 1.4187725631768953) internal successors, (2751), 1939 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 19:01:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2751 transitions. [2022-01-10 19:01:55,675 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2751 transitions. Word has length 127 [2022-01-10 19:01:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:55,676 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 2751 transitions. [2022-01-10 19:01:55,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2751 transitions. [2022-01-10 19:01:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:01:55,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:55,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:55,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:01:55,678 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1721763748, now seen corresponding path program 1 times [2022-01-10 19:01:55,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:55,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792603480] [2022-01-10 19:01:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:55,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:01:55,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:55,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792603480] [2022-01-10 19:01:55,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792603480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:55,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:55,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:55,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164212930] [2022-01-10 19:01:55,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:55,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:55,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:55,833 INFO L87 Difference]: Start difference. First operand 1940 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:56,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:56,031 INFO L93 Difference]: Finished difference Result 2730 states and 3877 transitions. [2022-01-10 19:01:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:56,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:01:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:56,035 INFO L225 Difference]: With dead ends: 2730 [2022-01-10 19:01:56,035 INFO L226 Difference]: Without dead ends: 1010 [2022-01-10 19:01:56,038 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 19:01:56,039 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 95 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:56,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 407 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-01-10 19:01:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1008. [2022-01-10 19:01:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 1.4011916583912611) internal successors, (1411), 1007 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states 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 19:01:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1411 transitions. [2022-01-10 19:01:56,194 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1411 transitions. Word has length 127 [2022-01-10 19:01:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:56,194 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1411 transitions. [2022-01-10 19:01:56,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:56,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1411 transitions. [2022-01-10 19:01:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:01:56,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:56,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:56,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:01:56,196 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1409100496, now seen corresponding path program 1 times [2022-01-10 19:01:56,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:56,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395958583] [2022-01-10 19:01:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:56,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:56,315 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 19:01:56,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395958583] [2022-01-10 19:01:56,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395958583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:56,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:56,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:56,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870716410] [2022-01-10 19:01:56,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:56,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:56,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:56,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:56,318 INFO L87 Difference]: Start difference. First operand 1008 states and 1411 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:58,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:01:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:58,546 INFO L93 Difference]: Finished difference Result 1349 states and 1887 transitions. [2022-01-10 19:01:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:58,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:01:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:58,548 INFO L225 Difference]: With dead ends: 1349 [2022-01-10 19:01:58,548 INFO L226 Difference]: Without dead ends: 491 [2022-01-10 19:01:58,549 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 19:01:58,549 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 71 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:58,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 385 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 19:01:58,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-01-10 19:01:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2022-01-10 19:01:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.3640167364016735) internal successors, (652), 478 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 19:01:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 652 transitions. [2022-01-10 19:01:58,622 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 652 transitions. Word has length 127 [2022-01-10 19:01:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:58,622 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 652 transitions. [2022-01-10 19:01:58,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 652 transitions. [2022-01-10 19:01:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:01:58,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:58,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:58,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:01:58,623 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:58,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:58,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1768493296, now seen corresponding path program 1 times [2022-01-10 19:01:58,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:58,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440759714] [2022-01-10 19:01:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:58,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:58,795 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 19:01:58,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:58,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440759714] [2022-01-10 19:01:58,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440759714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:58,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:58,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:01:58,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801864950] [2022-01-10 19:01:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:58,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:01:58,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:58,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:01:58,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:01:58,797 INFO L87 Difference]: Start difference. First operand 479 states and 652 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:59,198 INFO L93 Difference]: Finished difference Result 990 states and 1364 transitions. [2022-01-10 19:01:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:01:59,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:01:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:59,200 INFO L225 Difference]: With dead ends: 990 [2022-01-10 19:01:59,200 INFO L226 Difference]: Without dead ends: 587 [2022-01-10 19:01:59,201 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 19:01:59,201 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 82 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:59,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 579 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 19:01:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-01-10 19:01:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 584. [2022-01-10 19:01:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.3619210977701544) internal successors, (794), 583 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 19:01:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 794 transitions. [2022-01-10 19:01:59,292 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 794 transitions. Word has length 127 [2022-01-10 19:01:59,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:59,293 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 794 transitions. [2022-01-10 19:01:59,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:01:59,293 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 794 transitions. [2022-01-10 19:01:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 19:01:59,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:59,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:59,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:01:59,294 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:59,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1218422144, now seen corresponding path program 1 times [2022-01-10 19:01:59,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:59,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229547380] [2022-01-10 19:01:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:59,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:01:59,534 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 19:01:59,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:01:59,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229547380] [2022-01-10 19:01:59,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229547380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:01:59,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:01:59,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:01:59,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288231621] [2022-01-10 19:01:59,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:01:59,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:01:59,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:01:59,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:01:59,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:01:59,535 INFO L87 Difference]: Start difference. First operand 584 states and 794 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 19:01:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:01:59,776 INFO L93 Difference]: Finished difference Result 792 states and 1079 transitions. [2022-01-10 19:01:59,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:01:59,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-01-10 19:01:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:01:59,779 INFO L225 Difference]: With dead ends: 792 [2022-01-10 19:01:59,779 INFO L226 Difference]: Without dead ends: 790 [2022-01-10 19:01:59,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:01:59,780 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 223 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:01:59,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 784 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:01:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-01-10 19:01:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 590. [2022-01-10 19:01:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.3565365025466893) internal successors, (799), 589 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 19:01:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 799 transitions. [2022-01-10 19:01:59,889 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 799 transitions. Word has length 128 [2022-01-10 19:01:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:01:59,890 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 799 transitions. [2022-01-10 19:01:59,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 19:01:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 799 transitions. [2022-01-10 19:01:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 19:01:59,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:01:59,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:01:59,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:01:59,891 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:01:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:01:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1218451935, now seen corresponding path program 1 times [2022-01-10 19:01:59,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:01:59,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351247360] [2022-01-10 19:01:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:01:59,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:01:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:02:00,078 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 19:02:00,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:02:00,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351247360] [2022-01-10 19:02:00,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351247360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:02:00,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:02:00,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:02:00,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693914170] [2022-01-10 19:02:00,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:02:00,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:02:00,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:02:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:02:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:02:00,080 INFO L87 Difference]: Start difference. First operand 590 states and 799 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 19:02:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:02:00,702 INFO L93 Difference]: Finished difference Result 1118 states and 1522 transitions. [2022-01-10 19:02:00,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:02:00,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-01-10 19:02:00,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:02:00,704 INFO L225 Difference]: With dead ends: 1118 [2022-01-10 19:02:00,704 INFO L226 Difference]: Without dead ends: 706 [2022-01-10 19:02:00,705 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 19:02:00,705 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 77 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 19:02:00,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 441 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 19:02:00,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-01-10 19:02:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 702. [2022-01-10 19:02:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.355206847360913) internal successors, (950), 701 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 19:02:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 950 transitions. [2022-01-10 19:02:00,831 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 950 transitions. Word has length 128 [2022-01-10 19:02:00,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:02:00,831 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 950 transitions. [2022-01-10 19:02:00,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 19:02:00,831 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 950 transitions. [2022-01-10 19:02:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 19:02:00,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:02:00,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:02:00,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:02:00,832 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:02:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:02:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1041524255, now seen corresponding path program 1 times [2022-01-10 19:02:00,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:02:00,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618446984] [2022-01-10 19:02:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:02:00,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:02:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:02:00,969 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 19:02:00,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:02:00,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618446984] [2022-01-10 19:02:00,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618446984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:02:00,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:02:00,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:02:00,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5042587] [2022-01-10 19:02:00,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:02:00,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:02:00,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:02:00,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:02:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:02:00,970 INFO L87 Difference]: Start difference. First operand 702 states and 950 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 19:02:02,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:05,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:02:05,367 INFO L93 Difference]: Finished difference Result 1276 states and 1732 transitions. [2022-01-10 19:02:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:02:05,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-01-10 19:02:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:02:05,369 INFO L225 Difference]: With dead ends: 1276 [2022-01-10 19:02:05,369 INFO L226 Difference]: Without dead ends: 679 [2022-01-10 19:02:05,370 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 19:02:05,371 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 103 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:02:05,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 365 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 19:02:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-01-10 19:02:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 666. [2022-01-10 19:02:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.344360902255639) internal successors, (894), 665 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 19:02:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 894 transitions. [2022-01-10 19:02:05,521 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 894 transitions. Word has length 128 [2022-01-10 19:02:05,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:02:05,521 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 894 transitions. [2022-01-10 19:02:05,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 19:02:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 894 transitions. [2022-01-10 19:02:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 19:02:05,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:02:05,522 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:02:05,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:02:05,522 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:02:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:02:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2022060435, now seen corresponding path program 1 times [2022-01-10 19:02:05,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:02:05,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330314623] [2022-01-10 19:02:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:02:05,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:02:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:02:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:02:06,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:02:06,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330314623] [2022-01-10 19:02:06,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330314623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:02:06,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:02:06,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 19:02:06,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479297697] [2022-01-10 19:02:06,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:02:06,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 19:02:06,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:02:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 19:02:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-10 19:02:06,581 INFO L87 Difference]: Start difference. First operand 666 states and 894 transitions. Second operand has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 19:02:10,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:12,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:15,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:17,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:21,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:02:22,025 INFO L93 Difference]: Finished difference Result 2030 states and 2751 transitions. [2022-01-10 19:02:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 19:02:22,026 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2022-01-10 19:02:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:02:22,027 INFO L225 Difference]: With dead ends: 2030 [2022-01-10 19:02:22,027 INFO L226 Difference]: Without dead ends: 1403 [2022-01-10 19:02:22,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-01-10 19:02:22,029 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 898 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-01-10 19:02:22,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 1362 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1091 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-01-10 19:02:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-10 19:02:22,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 851. [2022-01-10 19:02:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 1.3341176470588236) internal successors, (1134), 850 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 19:02:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1134 transitions. [2022-01-10 19:02:22,266 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1134 transitions. Word has length 155 [2022-01-10 19:02:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:02:22,266 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 1134 transitions. [2022-01-10 19:02:22,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 19:02:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1134 transitions. [2022-01-10 19:02:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 19:02:22,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:02:22,267 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:02:22,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:02:22,267 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:02:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:02:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1828006867, now seen corresponding path program 1 times [2022-01-10 19:02:22,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:02:22,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852479197] [2022-01-10 19:02:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:02:22,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:02:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:02:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:02:23,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:02:23,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852479197] [2022-01-10 19:02:23,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852479197] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 19:02:23,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498604176] [2022-01-10 19:02:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:02:23,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 19:02:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:02:23,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 19:02:23,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process