/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:10:08,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:10:08,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:10:08,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:10:08,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:10:08,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:10:08,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:10:08,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:10:08,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:10:08,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:10:08,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:10:08,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:10:08,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:10:08,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:10:08,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:10:08,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:10:08,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:10:08,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:10:08,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:10:08,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:10:08,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:10:08,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:10:08,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:10:08,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:10:08,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:10:08,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:10:08,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:10:08,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:10:08,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 14:10:08,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:10:08,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:10:08,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:10:08,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:10:08,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:10:08,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:10:08,833 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:10:08,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:10:08,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:10:08,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:10:08,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:10:08,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:10:08,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:10:08,835 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:10:08,835 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:10:08,835 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:10:08,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:10:08,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:10:08,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:10:08,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:10:08,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:10:08,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:10:08,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:10:08,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:10:08,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:10:08,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:10:08,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:10:08,837 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:10:08,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:10:08,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:10:08,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:10:08,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:10:08,838 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:10:08,838 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:10:08,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:10:09,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:10:09,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:10:09,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:10:09,020 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:10:09,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2022-01-10 14:10:09,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ae6f560/8848b293493b4b049270aec09294d88e/FLAGe1f5afdf3 [2022-01-10 14:10:09,498 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:10:09,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2022-01-10 14:10:09,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ae6f560/8848b293493b4b049270aec09294d88e/FLAGe1f5afdf3 [2022-01-10 14:10:09,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ae6f560/8848b293493b4b049270aec09294d88e [2022-01-10 14:10:09,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:10:09,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:10:09,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:10:09,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:10:09,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:10:09,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:09,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1a6146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09, skipping insertion in model container [2022-01-10 14:10:09,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:09,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:10:09,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:10:09,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[913,926] [2022-01-10 14:10:09,814 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2022-01-10 14:10:09,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:10:09,892 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:10:09,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[913,926] [2022-01-10 14:10:09,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2022-01-10 14:10:09,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:10:09,974 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:10:09,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09 WrapperNode [2022-01-10 14:10:09,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:10:09,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:10:09,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:10:09,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:10:09,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,058 INFO L137 Inliner]: procedures = 61, calls = 66, calls flagged for inlining = 61, calls inlined = 132, statements flattened = 1903 [2022-01-10 14:10:10,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:10:10,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:10:10,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:10:10,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:10:10,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:10:10,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:10:10,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:10:10,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:10:10,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (1/1) ... [2022-01-10 14:10:10,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:10:10,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:10:10,189 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 14:10:10,207 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 14:10:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:10:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:10:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:10:10,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:10:10,318 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:10:10,319 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:10:11,176 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:10:11,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:10:11,192 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 14:10:11,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:10:11 BoogieIcfgContainer [2022-01-10 14:10:11,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:10:11,195 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:10:11,195 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:10:11,197 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:10:11,199 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:10:11" (1/1) ... [2022-01-10 14:10:11,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:10:11 BasicIcfg [2022-01-10 14:10:11,433 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:10:11,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:10:11,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:10:11,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:10:11,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:10:09" (1/4) ... [2022-01-10 14:10:11,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104c802d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:10:11, skipping insertion in model container [2022-01-10 14:10:11,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:10:09" (2/4) ... [2022-01-10 14:10:11,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104c802d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:10:11, skipping insertion in model container [2022-01-10 14:10:11,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:10:11" (3/4) ... [2022-01-10 14:10:11,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104c802d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:10:11, skipping insertion in model container [2022-01-10 14:10:11,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:10:11" (4/4) ... [2022-01-10 14:10:11,438 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.06.cil-2.cTransformedIcfg [2022-01-10 14:10:11,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:10:11,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 14:10:11,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:10:11,486 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 14:10:11,486 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 14:10:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 767 states, 763 states have (on average 1.5294888597640892) internal successors, (1167), 766 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states 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 14:10:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 14:10:11,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:11,518 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] [2022-01-10 14:10:11,518 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:11,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:11,521 INFO L85 PathProgramCache]: Analyzing trace with hash -466842819, now seen corresponding path program 1 times [2022-01-10 14:10:11,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:11,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271535984] [2022-01-10 14:10:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:11,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:11,772 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 14:10:11,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:11,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271535984] [2022-01-10 14:10:11,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271535984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:11,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:11,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:11,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124836333] [2022-01-10 14:10:11,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:11,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:11,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:11,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:11,808 INFO L87 Difference]: Start difference. First operand has 767 states, 763 states have (on average 1.5294888597640892) internal successors, (1167), 766 states have internal predecessors, (1167), 0 states have call successors, (0), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 14:10:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:11,938 INFO L93 Difference]: Finished difference Result 1505 states and 2280 transitions. [2022-01-10 14:10:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:11,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-10 14:10:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:11,956 INFO L225 Difference]: With dead ends: 1505 [2022-01-10 14:10:11,957 INFO L226 Difference]: Without dead ends: 822 [2022-01-10 14:10:11,961 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 14:10:11,964 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 1106 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:11,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 1239 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-01-10 14:10:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 801. [2022-01-10 14:10:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 798 states have (on average 1.487468671679198) internal successors, (1187), 800 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 14:10:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1187 transitions. [2022-01-10 14:10:12,032 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1187 transitions. Word has length 36 [2022-01-10 14:10:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:12,032 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1187 transitions. [2022-01-10 14:10:12,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 14:10:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1187 transitions. [2022-01-10 14:10:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 14:10:12,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:12,034 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] [2022-01-10 14:10:12,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:10:12,034 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:12,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1800917455, now seen corresponding path program 1 times [2022-01-10 14:10:12,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:12,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950347171] [2022-01-10 14:10:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:12,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:12,114 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 14:10:12,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:12,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950347171] [2022-01-10 14:10:12,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950347171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:12,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:12,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:12,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899072923] [2022-01-10 14:10:12,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:12,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:12,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:12,116 INFO L87 Difference]: Start difference. First operand 801 states and 1187 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 14:10:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:12,143 INFO L93 Difference]: Finished difference Result 970 states and 1422 transitions. [2022-01-10 14:10:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:12,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 14:10:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:12,146 INFO L225 Difference]: With dead ends: 970 [2022-01-10 14:10:12,146 INFO L226 Difference]: Without dead ends: 859 [2022-01-10 14:10:12,147 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 14:10:12,147 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 60 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:12,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 2211 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-01-10 14:10:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 854. [2022-01-10 14:10:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 851 states have (on average 1.4806110458284372) internal successors, (1260), 853 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 14:10:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1260 transitions. [2022-01-10 14:10:12,162 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1260 transitions. Word has length 37 [2022-01-10 14:10:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:12,162 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1260 transitions. [2022-01-10 14:10:12,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 14:10:12,163 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1260 transitions. [2022-01-10 14:10:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 14:10:12,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:12,164 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] [2022-01-10 14:10:12,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:10:12,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1646620622, now seen corresponding path program 1 times [2022-01-10 14:10:12,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:12,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284272819] [2022-01-10 14:10:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:12,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:12,198 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 14:10:12,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:12,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284272819] [2022-01-10 14:10:12,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284272819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:12,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:12,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:12,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10466020] [2022-01-10 14:10:12,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:12,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:12,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:12,200 INFO L87 Difference]: Start difference. First operand 854 states and 1260 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 14:10:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:12,234 INFO L93 Difference]: Finished difference Result 1171 states and 1696 transitions. [2022-01-10 14:10:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:12,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 14:10:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:12,239 INFO L225 Difference]: With dead ends: 1171 [2022-01-10 14:10:12,239 INFO L226 Difference]: Without dead ends: 1007 [2022-01-10 14:10:12,241 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 14:10:12,243 INFO L933 BasicCegarLoop]: 1148 mSDtfsCounter, 1097 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:12,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 1236 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2022-01-10 14:10:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 985. [2022-01-10 14:10:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 982 states have (on average 1.4623217922606924) internal successors, (1436), 984 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 14:10:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1436 transitions. [2022-01-10 14:10:12,301 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1436 transitions. Word has length 37 [2022-01-10 14:10:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:12,301 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 1436 transitions. [2022-01-10 14:10:12,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 14:10:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1436 transitions. [2022-01-10 14:10:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 14:10:12,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:12,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:12,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:10:12,303 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:12,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash -941200618, now seen corresponding path program 1 times [2022-01-10 14:10:12,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:12,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654683055] [2022-01-10 14:10:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:12,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:12,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:12,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654683055] [2022-01-10 14:10:12,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654683055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:12,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:12,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:12,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109253765] [2022-01-10 14:10:12,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:12,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:12,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:12,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:12,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:12,362 INFO L87 Difference]: Start difference. First operand 985 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 14:10:12,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:12,395 INFO L93 Difference]: Finished difference Result 1436 states and 2043 transitions. [2022-01-10 14:10:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:12,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 14:10:12,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:12,399 INFO L225 Difference]: With dead ends: 1436 [2022-01-10 14:10:12,400 INFO L226 Difference]: Without dead ends: 1141 [2022-01-10 14:10:12,402 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 14:10:12,407 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 48 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:12,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 2291 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-01-10 14:10:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2022-01-10 14:10:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1138 states have (on average 1.4270650263620386) internal successors, (1624), 1140 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states 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 14:10:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1624 transitions. [2022-01-10 14:10:12,431 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1624 transitions. Word has length 51 [2022-01-10 14:10:12,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:12,431 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1624 transitions. [2022-01-10 14:10:12,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 14:10:12,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1624 transitions. [2022-01-10 14:10:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 14:10:12,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:12,434 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] [2022-01-10 14:10:12,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:10:12,434 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:12,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:12,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1001788778, now seen corresponding path program 1 times [2022-01-10 14:10:12,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:12,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110704616] [2022-01-10 14:10:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:12,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:12,477 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 14:10:12,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:12,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110704616] [2022-01-10 14:10:12,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110704616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:12,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:12,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:12,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193199945] [2022-01-10 14:10:12,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:12,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:12,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:12,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:12,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:12,478 INFO L87 Difference]: Start difference. First operand 1141 states and 1624 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 14:10:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:12,518 INFO L93 Difference]: Finished difference Result 1614 states and 2240 transitions. [2022-01-10 14:10:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:12,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 14:10:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:12,523 INFO L225 Difference]: With dead ends: 1614 [2022-01-10 14:10:12,523 INFO L226 Difference]: Without dead ends: 1249 [2022-01-10 14:10:12,524 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 14:10:12,525 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 1071 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:12,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 1213 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-01-10 14:10:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1249. [2022-01-10 14:10:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1246 states have (on average 1.406099518459069) internal successors, (1752), 1248 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states 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 14:10:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1752 transitions. [2022-01-10 14:10:12,554 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1752 transitions. Word has length 55 [2022-01-10 14:10:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:12,556 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1752 transitions. [2022-01-10 14:10:12,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 14:10:12,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1752 transitions. [2022-01-10 14:10:12,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 14:10:12,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:12,562 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:10:12,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 14:10:12,562 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:12,562 INFO L85 PathProgramCache]: Analyzing trace with hash 557201408, now seen corresponding path program 1 times [2022-01-10 14:10:12,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:12,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151597914] [2022-01-10 14:10:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:12,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:12,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:12,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151597914] [2022-01-10 14:10:12,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151597914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:12,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:12,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:10:12,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634280030] [2022-01-10 14:10:12,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:12,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:10:12,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:12,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:10:12,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:10:12,657 INFO L87 Difference]: Start difference. First operand 1249 states and 1752 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 14:10:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:12,772 INFO L93 Difference]: Finished difference Result 2332 states and 3156 transitions. [2022-01-10 14:10:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:10:12,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 14:10:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:12,778 INFO L225 Difference]: With dead ends: 2332 [2022-01-10 14:10:12,778 INFO L226 Difference]: Without dead ends: 1909 [2022-01-10 14:10:12,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:10:12,779 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 302 mSDsluCounter, 3512 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:12,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 4710 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2022-01-10 14:10:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1273. [2022-01-10 14:10:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1270 states have (on average 1.395275590551181) internal successors, (1772), 1272 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states 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 14:10:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1772 transitions. [2022-01-10 14:10:12,817 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1772 transitions. Word has length 56 [2022-01-10 14:10:12,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:12,818 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 1772 transitions. [2022-01-10 14:10:12,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 14:10:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1772 transitions. [2022-01-10 14:10:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 14:10:12,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:12,819 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:10:12,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 14:10:12,819 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:12,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash 908001345, now seen corresponding path program 1 times [2022-01-10 14:10:12,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:12,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934393949] [2022-01-10 14:10:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:12,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:12,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:12,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934393949] [2022-01-10 14:10:12,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934393949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:12,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:12,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:10:12,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934362107] [2022-01-10 14:10:12,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:12,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:10:12,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:10:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:10:12,883 INFO L87 Difference]: Start difference. First operand 1273 states and 1772 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 14:10:12,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:12,989 INFO L93 Difference]: Finished difference Result 2062 states and 2782 transitions. [2022-01-10 14:10:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:10:12,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 14:10:12,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:12,994 INFO L225 Difference]: With dead ends: 2062 [2022-01-10 14:10:12,994 INFO L226 Difference]: Without dead ends: 1564 [2022-01-10 14:10:12,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:10:12,996 INFO L933 BasicCegarLoop]: 1175 mSDtfsCounter, 276 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:12,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 4656 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:12,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-01-10 14:10:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1171. [2022-01-10 14:10:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1168 states have (on average 1.4049657534246576) internal successors, (1641), 1170 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states 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 14:10:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1641 transitions. [2022-01-10 14:10:13,040 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1641 transitions. Word has length 56 [2022-01-10 14:10:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:13,041 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1641 transitions. [2022-01-10 14:10:13,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 14:10:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1641 transitions. [2022-01-10 14:10:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 14:10:13,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:13,043 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:10:13,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 14:10:13,043 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:13,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1169178207, now seen corresponding path program 1 times [2022-01-10 14:10:13,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:13,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267974676] [2022-01-10 14:10:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:13,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:13,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:13,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267974676] [2022-01-10 14:10:13,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267974676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:13,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:13,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:10:13,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798543181] [2022-01-10 14:10:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:13,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:10:13,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:10:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:10:13,125 INFO L87 Difference]: Start difference. First operand 1171 states and 1641 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 14:10:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:13,208 INFO L93 Difference]: Finished difference Result 1221 states and 1701 transitions. [2022-01-10 14:10:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 14:10:13,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 14:10:13,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:13,212 INFO L225 Difference]: With dead ends: 1221 [2022-01-10 14:10:13,212 INFO L226 Difference]: Without dead ends: 1219 [2022-01-10 14:10:13,213 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 14:10:13,214 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 2218 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:13,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 1194 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-10 14:10:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1169. [2022-01-10 14:10:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1167 states have (on average 1.4035989717223651) internal successors, (1638), 1168 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states 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 14:10:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1638 transitions. [2022-01-10 14:10:13,270 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1638 transitions. Word has length 56 [2022-01-10 14:10:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:13,270 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1638 transitions. [2022-01-10 14:10:13,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 14:10:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1638 transitions. [2022-01-10 14:10:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 14:10:13,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:13,271 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:10:13,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 14:10:13,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:13,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1884783960, now seen corresponding path program 1 times [2022-01-10 14:10:13,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:13,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306646860] [2022-01-10 14:10:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:13,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:13,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:13,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306646860] [2022-01-10 14:10:13,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306646860] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:10:13,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080052158] [2022-01-10 14:10:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:13,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:10:13,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:10:13,463 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 14:10:13,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:10:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:13,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 14:10:13,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:10:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:13,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:10:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:14,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080052158] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:10:14,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:10:14,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 14:10:14,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910965121] [2022-01-10 14:10:14,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:10:14,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 14:10:14,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:14,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 14:10:14,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:10:14,106 INFO L87 Difference]: Start difference. First operand 1169 states and 1638 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 14:10:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:14,299 INFO L93 Difference]: Finished difference Result 2055 states and 2766 transitions. [2022-01-10 14:10:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:10:14,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 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 57 [2022-01-10 14:10:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:14,306 INFO L225 Difference]: With dead ends: 2055 [2022-01-10 14:10:14,306 INFO L226 Difference]: Without dead ends: 2053 [2022-01-10 14:10:14,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:10:14,307 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 2418 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 5230 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:14,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2418 Valid, 5230 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:14,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-01-10 14:10:14,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1441. [2022-01-10 14:10:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1439 states have (on average 1.383599722029187) internal successors, (1991), 1440 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states 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 14:10:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1991 transitions. [2022-01-10 14:10:14,400 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1991 transitions. Word has length 57 [2022-01-10 14:10:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:14,401 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1991 transitions. [2022-01-10 14:10:14,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 14:10:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1991 transitions. [2022-01-10 14:10:14,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 14:10:14,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:14,402 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:14,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 14:10:14,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:10:14,622 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash 496278580, now seen corresponding path program 2 times [2022-01-10 14:10:14,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:14,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765319676] [2022-01-10 14:10:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:14,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:14,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:14,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765319676] [2022-01-10 14:10:14,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765319676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:14,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:14,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:14,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433340171] [2022-01-10 14:10:14,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:14,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:14,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:14,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:14,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:14,657 INFO L87 Difference]: Start difference. First operand 1441 states and 1991 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 14:10:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:14,733 INFO L93 Difference]: Finished difference Result 1948 states and 2651 transitions. [2022-01-10 14:10:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:14,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 14:10:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:14,738 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 14:10:14,738 INFO L226 Difference]: Without dead ends: 1352 [2022-01-10 14:10:14,739 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 14:10:14,739 INFO L933 BasicCegarLoop]: 1159 mSDtfsCounter, 1075 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:14,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 1228 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-01-10 14:10:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1326. [2022-01-10 14:10:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1324 states have (on average 1.3889728096676737) internal successors, (1839), 1325 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states 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 14:10:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1839 transitions. [2022-01-10 14:10:14,803 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1839 transitions. Word has length 72 [2022-01-10 14:10:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:14,803 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1839 transitions. [2022-01-10 14:10:14,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 14:10:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1839 transitions. [2022-01-10 14:10:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 14:10:14,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:14,804 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:14,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 14:10:14,805 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:14,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1535467051, now seen corresponding path program 1 times [2022-01-10 14:10:14,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:14,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155845315] [2022-01-10 14:10:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:14,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:10:14,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:14,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155845315] [2022-01-10 14:10:14,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155845315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:14,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:14,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:14,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98713095] [2022-01-10 14:10:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:14,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:14,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:14,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:14,848 INFO L87 Difference]: Start difference. First operand 1326 states and 1839 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 14:10:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:14,923 INFO L93 Difference]: Finished difference Result 1980 states and 2666 transitions. [2022-01-10 14:10:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:14,923 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 84 [2022-01-10 14:10:14,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:14,927 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 14:10:14,927 INFO L226 Difference]: Without dead ends: 1344 [2022-01-10 14:10:14,928 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 14:10:14,929 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 1060 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:14,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 1216 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-01-10 14:10:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1326. [2022-01-10 14:10:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1324 states have (on average 1.3738670694864048) internal successors, (1819), 1325 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states 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 14:10:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1819 transitions. [2022-01-10 14:10:14,993 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1819 transitions. Word has length 84 [2022-01-10 14:10:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:14,993 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1819 transitions. [2022-01-10 14:10:14,994 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 14:10:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1819 transitions. [2022-01-10 14:10:14,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 14:10:14,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:14,995 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:14,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 14:10:14,995 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:14,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:14,995 INFO L85 PathProgramCache]: Analyzing trace with hash 994007053, now seen corresponding path program 1 times [2022-01-10 14:10:14,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:14,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99433230] [2022-01-10 14:10:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:14,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:10:15,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99433230] [2022-01-10 14:10:15,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99433230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:15,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:15,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:15,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591520267] [2022-01-10 14:10:15,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:15,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:15,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,023 INFO L87 Difference]: Start difference. First operand 1326 states and 1819 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 14:10:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:15,081 INFO L93 Difference]: Finished difference Result 1590 states and 2137 transitions. [2022-01-10 14:10:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:15,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 85 [2022-01-10 14:10:15,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:15,084 INFO L225 Difference]: With dead ends: 1590 [2022-01-10 14:10:15,084 INFO L226 Difference]: Without dead ends: 684 [2022-01-10 14:10:15,085 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 14:10:15,085 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 56 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:15,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 2248 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-01-10 14:10:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2022-01-10 14:10:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4978038067349926) internal successors, (1023), 683 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states 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 14:10:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1023 transitions. [2022-01-10 14:10:15,107 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1023 transitions. Word has length 85 [2022-01-10 14:10:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:15,107 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1023 transitions. [2022-01-10 14:10:15,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 14:10:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1023 transitions. [2022-01-10 14:10:15,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:15,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:15,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:15,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 14:10:15,108 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:15,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:15,108 INFO L85 PathProgramCache]: Analyzing trace with hash -547340632, now seen corresponding path program 1 times [2022-01-10 14:10:15,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:15,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351356296] [2022-01-10 14:10:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:15,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:15,138 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 14:10:15,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:15,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351356296] [2022-01-10 14:10:15,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351356296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:15,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:15,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:15,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963588612] [2022-01-10 14:10:15,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:15,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:15,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,140 INFO L87 Difference]: Start difference. First operand 684 states and 1023 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:15,167 INFO L93 Difference]: Finished difference Result 1362 states and 2039 transitions. [2022-01-10 14:10:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:15,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:15,169 INFO L225 Difference]: With dead ends: 1362 [2022-01-10 14:10:15,169 INFO L226 Difference]: Without dead ends: 684 [2022-01-10 14:10:15,170 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 14:10:15,171 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 1017 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:15,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 1022 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-01-10 14:10:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2022-01-10 14:10:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4963396778916545) internal successors, (1022), 683 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 14:10:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1022 transitions. [2022-01-10 14:10:15,192 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1022 transitions. Word has length 99 [2022-01-10 14:10:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:15,193 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1022 transitions. [2022-01-10 14:10:15,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1022 transitions. [2022-01-10 14:10:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:15,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:15,193 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] [2022-01-10 14:10:15,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 14:10:15,194 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash 262146825, now seen corresponding path program 1 times [2022-01-10 14:10:15,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:15,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643342946] [2022-01-10 14:10:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:15,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:15,218 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 14:10:15,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:15,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643342946] [2022-01-10 14:10:15,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643342946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:15,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:15,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:15,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849756668] [2022-01-10 14:10:15,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:15,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:15,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:15,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,220 INFO L87 Difference]: Start difference. First operand 684 states and 1022 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:15,277 INFO L93 Difference]: Finished difference Result 1895 states and 2825 transitions. [2022-01-10 14:10:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:15,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:15,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:15,281 INFO L225 Difference]: With dead ends: 1895 [2022-01-10 14:10:15,281 INFO L226 Difference]: Without dead ends: 1225 [2022-01-10 14:10:15,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,283 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 931 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:15,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 1884 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:15,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-01-10 14:10:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1223. [2022-01-10 14:10:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.4885433715220948) internal successors, (1819), 1222 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states 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 14:10:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1819 transitions. [2022-01-10 14:10:15,329 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1819 transitions. Word has length 99 [2022-01-10 14:10:15,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:15,330 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1819 transitions. [2022-01-10 14:10:15,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1819 transitions. [2022-01-10 14:10:15,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:15,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:15,332 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] [2022-01-10 14:10:15,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 14:10:15,333 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2123444777, now seen corresponding path program 1 times [2022-01-10 14:10:15,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:15,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022096787] [2022-01-10 14:10:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:15,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:15,362 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 14:10:15,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022096787] [2022-01-10 14:10:15,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022096787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:15,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:15,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:15,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432894560] [2022-01-10 14:10:15,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:15,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:15,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,364 INFO L87 Difference]: Start difference. First operand 1223 states and 1819 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:15,412 INFO L93 Difference]: Finished difference Result 2431 states and 3616 transitions. [2022-01-10 14:10:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:15,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:15,417 INFO L225 Difference]: With dead ends: 2431 [2022-01-10 14:10:15,417 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:15,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,420 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 1001 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:15,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 1010 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.4819967266775778) internal successors, (1811), 1222 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states 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 14:10:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1811 transitions. [2022-01-10 14:10:15,487 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1811 transitions. Word has length 99 [2022-01-10 14:10:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:15,487 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1811 transitions. [2022-01-10 14:10:15,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1811 transitions. [2022-01-10 14:10:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:15,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:15,488 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] [2022-01-10 14:10:15,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 14:10:15,488 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash 659465993, now seen corresponding path program 1 times [2022-01-10 14:10:15,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:15,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96478795] [2022-01-10 14:10:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:15,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:15,519 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 14:10:15,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:15,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96478795] [2022-01-10 14:10:15,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96478795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:15,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:15,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:15,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2298099] [2022-01-10 14:10:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:15,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:15,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,520 INFO L87 Difference]: Start difference. First operand 1223 states and 1811 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:15,578 INFO L93 Difference]: Finished difference Result 2430 states and 3599 transitions. [2022-01-10 14:10:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:15,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:15,582 INFO L225 Difference]: With dead ends: 2430 [2022-01-10 14:10:15,582 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:15,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,584 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 995 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:15,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1005 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:15,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.4754500818330605) internal successors, (1803), 1222 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states 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 14:10:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1803 transitions. [2022-01-10 14:10:15,629 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1803 transitions. Word has length 99 [2022-01-10 14:10:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:15,629 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1803 transitions. [2022-01-10 14:10:15,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1803 transitions. [2022-01-10 14:10:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:15,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:15,630 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] [2022-01-10 14:10:15,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 14:10:15,630 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:15,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1465969111, now seen corresponding path program 1 times [2022-01-10 14:10:15,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:15,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199048565] [2022-01-10 14:10:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:15,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:15,654 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 14:10:15,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:15,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199048565] [2022-01-10 14:10:15,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199048565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:15,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:15,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:15,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572476155] [2022-01-10 14:10:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:15,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:15,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:15,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:15,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,655 INFO L87 Difference]: Start difference. First operand 1223 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:15,708 INFO L93 Difference]: Finished difference Result 2429 states and 3582 transitions. [2022-01-10 14:10:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:15,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:15,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:15,711 INFO L225 Difference]: With dead ends: 2429 [2022-01-10 14:10:15,712 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:15,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,714 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 989 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:15,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 1000 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.4689034369885434) internal successors, (1795), 1222 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states 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 14:10:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1795 transitions. [2022-01-10 14:10:15,762 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1795 transitions. Word has length 99 [2022-01-10 14:10:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:15,763 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1795 transitions. [2022-01-10 14:10:15,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1795 transitions. [2022-01-10 14:10:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:15,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:15,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:15,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 14:10:15,764 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1374962441, now seen corresponding path program 1 times [2022-01-10 14:10:15,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:15,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030171990] [2022-01-10 14:10:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:15,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:15,799 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 14:10:15,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:15,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030171990] [2022-01-10 14:10:15,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030171990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:15,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:15,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:15,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359951292] [2022-01-10 14:10:15,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:15,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:15,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:15,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,801 INFO L87 Difference]: Start difference. First operand 1223 states and 1795 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:15,854 INFO L93 Difference]: Finished difference Result 2428 states and 3565 transitions. [2022-01-10 14:10:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:15,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:15,858 INFO L225 Difference]: With dead ends: 2428 [2022-01-10 14:10:15,858 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:15,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,860 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 983 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:15,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 995 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:15,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.4623567921440261) internal successors, (1787), 1222 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states 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 14:10:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1787 transitions. [2022-01-10 14:10:15,908 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1787 transitions. Word has length 99 [2022-01-10 14:10:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:15,908 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1787 transitions. [2022-01-10 14:10:15,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1787 transitions. [2022-01-10 14:10:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:15,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:15,909 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] [2022-01-10 14:10:15,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 14:10:15,909 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:15,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash 81132073, now seen corresponding path program 1 times [2022-01-10 14:10:15,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:15,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365996656] [2022-01-10 14:10:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:15,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:15,941 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 14:10:15,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:15,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365996656] [2022-01-10 14:10:15,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365996656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:15,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:15,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:15,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495152060] [2022-01-10 14:10:15,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:15,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:15,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:15,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:15,943 INFO L87 Difference]: Start difference. First operand 1223 states and 1787 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:15,999 INFO L93 Difference]: Finished difference Result 2427 states and 3548 transitions. [2022-01-10 14:10:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:16,003 INFO L225 Difference]: With dead ends: 2427 [2022-01-10 14:10:16,003 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:16,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,004 INFO L933 BasicCegarLoop]: 990 mSDtfsCounter, 977 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:16,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 990 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:16,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.455810147299509) internal successors, (1779), 1222 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states 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 14:10:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1779 transitions. [2022-01-10 14:10:16,052 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1779 transitions. Word has length 99 [2022-01-10 14:10:16,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:16,052 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1779 transitions. [2022-01-10 14:10:16,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1779 transitions. [2022-01-10 14:10:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:16,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:16,053 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] [2022-01-10 14:10:16,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 14:10:16,053 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:16,053 INFO L85 PathProgramCache]: Analyzing trace with hash -514793719, now seen corresponding path program 1 times [2022-01-10 14:10:16,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191538453] [2022-01-10 14:10:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:16,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:16,081 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 14:10:16,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:16,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191538453] [2022-01-10 14:10:16,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191538453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:16,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:16,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:16,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558138961] [2022-01-10 14:10:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:16,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:16,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,082 INFO L87 Difference]: Start difference. First operand 1223 states and 1779 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:16,147 INFO L93 Difference]: Finished difference Result 2426 states and 3531 transitions. [2022-01-10 14:10:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:16,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:16,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:16,150 INFO L225 Difference]: With dead ends: 2426 [2022-01-10 14:10:16,150 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:16,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,152 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 971 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:16,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 985 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:16,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.4492635024549918) internal successors, (1771), 1222 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states 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 14:10:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1771 transitions. [2022-01-10 14:10:16,218 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1771 transitions. Word has length 99 [2022-01-10 14:10:16,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:16,218 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1771 transitions. [2022-01-10 14:10:16,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1771 transitions. [2022-01-10 14:10:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:16,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:16,219 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] [2022-01-10 14:10:16,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 14:10:16,219 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash 158719529, now seen corresponding path program 1 times [2022-01-10 14:10:16,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:16,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675472948] [2022-01-10 14:10:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:16,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:16,243 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 14:10:16,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:16,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675472948] [2022-01-10 14:10:16,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675472948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:16,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:16,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:16,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307527785] [2022-01-10 14:10:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:16,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:16,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,246 INFO L87 Difference]: Start difference. First operand 1223 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:16,328 INFO L93 Difference]: Finished difference Result 2425 states and 3514 transitions. [2022-01-10 14:10:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:16,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:16,343 INFO L225 Difference]: With dead ends: 2425 [2022-01-10 14:10:16,344 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:16,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,345 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 884 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:16,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1030 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.4296235679214402) internal successors, (1747), 1222 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states 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 14:10:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1747 transitions. [2022-01-10 14:10:16,396 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1747 transitions. Word has length 99 [2022-01-10 14:10:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:16,396 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1747 transitions. [2022-01-10 14:10:16,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1747 transitions. [2022-01-10 14:10:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:16,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:16,397 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] [2022-01-10 14:10:16,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 14:10:16,397 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash -334434424, now seen corresponding path program 1 times [2022-01-10 14:10:16,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:16,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838814614] [2022-01-10 14:10:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:16,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:16,421 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 14:10:16,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:16,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838814614] [2022-01-10 14:10:16,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838814614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:16,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:16,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:16,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062237014] [2022-01-10 14:10:16,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:16,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:16,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:16,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,424 INFO L87 Difference]: Start difference. First operand 1223 states and 1747 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:16,511 INFO L93 Difference]: Finished difference Result 2424 states and 3465 transitions. [2022-01-10 14:10:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:16,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:16,514 INFO L225 Difference]: With dead ends: 2424 [2022-01-10 14:10:16,514 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:16,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,518 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 870 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:16,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1015 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.4099836333878888) internal successors, (1723), 1222 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states 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 14:10:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1723 transitions. [2022-01-10 14:10:16,578 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1723 transitions. Word has length 99 [2022-01-10 14:10:16,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:16,578 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1723 transitions. [2022-01-10 14:10:16,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1723 transitions. [2022-01-10 14:10:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:16,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:16,579 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] [2022-01-10 14:10:16,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 14:10:16,579 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1546434151, now seen corresponding path program 1 times [2022-01-10 14:10:16,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:16,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718833524] [2022-01-10 14:10:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:16,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:16,605 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 14:10:16,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:16,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718833524] [2022-01-10 14:10:16,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718833524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:16,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:16,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:16,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058966619] [2022-01-10 14:10:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:16,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:16,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,606 INFO L87 Difference]: Start difference. First operand 1223 states and 1723 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:16,684 INFO L93 Difference]: Finished difference Result 2423 states and 3416 transitions. [2022-01-10 14:10:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:16,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:16,686 INFO L225 Difference]: With dead ends: 2423 [2022-01-10 14:10:16,686 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:16,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,690 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 856 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:16,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 1000 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.3903436988543372) internal successors, (1699), 1222 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:10:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1699 transitions. [2022-01-10 14:10:16,767 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1699 transitions. Word has length 99 [2022-01-10 14:10:16,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:16,767 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1699 transitions. [2022-01-10 14:10:16,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1699 transitions. [2022-01-10 14:10:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:16,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:16,768 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] [2022-01-10 14:10:16,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 14:10:16,768 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1865221702, now seen corresponding path program 1 times [2022-01-10 14:10:16,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:16,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846709355] [2022-01-10 14:10:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:16,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:16,800 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 14:10:16,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:16,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846709355] [2022-01-10 14:10:16,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846709355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:16,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:16,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:16,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934847886] [2022-01-10 14:10:16,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:16,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:16,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,802 INFO L87 Difference]: Start difference. First operand 1223 states and 1699 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:16,896 INFO L93 Difference]: Finished difference Result 2421 states and 3365 transitions. [2022-01-10 14:10:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:16,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:16,899 INFO L225 Difference]: With dead ends: 2421 [2022-01-10 14:10:16,899 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:16,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,902 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 841 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:16,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 985 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:16,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.3707037643207856) internal successors, (1675), 1222 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 14:10:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1675 transitions. [2022-01-10 14:10:16,954 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1675 transitions. Word has length 99 [2022-01-10 14:10:16,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:16,955 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1675 transitions. [2022-01-10 14:10:16,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1675 transitions. [2022-01-10 14:10:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:16,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:16,955 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] [2022-01-10 14:10:16,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 14:10:16,956 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:16,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1339446437, now seen corresponding path program 1 times [2022-01-10 14:10:16,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:16,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464653144] [2022-01-10 14:10:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:16,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:16,982 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 14:10:16,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:16,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464653144] [2022-01-10 14:10:16,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464653144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:16,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:16,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:16,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258330335] [2022-01-10 14:10:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:16,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:16,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:16,984 INFO L87 Difference]: Start difference. First operand 1223 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:17,062 INFO L93 Difference]: Finished difference Result 2420 states and 3316 transitions. [2022-01-10 14:10:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:17,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:17,064 INFO L225 Difference]: With dead ends: 2420 [2022-01-10 14:10:17,064 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:17,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:17,067 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 827 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:17,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 970 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.351063829787234) internal successors, (1651), 1222 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states 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 14:10:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1651 transitions. [2022-01-10 14:10:17,139 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1651 transitions. Word has length 99 [2022-01-10 14:10:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:17,139 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1651 transitions. [2022-01-10 14:10:17,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1651 transitions. [2022-01-10 14:10:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:17,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:17,140 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] [2022-01-10 14:10:17,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 14:10:17,140 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash -171100028, now seen corresponding path program 1 times [2022-01-10 14:10:17,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:17,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090118792] [2022-01-10 14:10:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:17,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:17,163 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 14:10:17,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:17,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090118792] [2022-01-10 14:10:17,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090118792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:17,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:17,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:17,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069359507] [2022-01-10 14:10:17,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:17,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:17,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:17,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:17,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:17,164 INFO L87 Difference]: Start difference. First operand 1223 states and 1651 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:17,239 INFO L93 Difference]: Finished difference Result 2419 states and 3267 transitions. [2022-01-10 14:10:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:17,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:17,241 INFO L225 Difference]: With dead ends: 2419 [2022-01-10 14:10:17,241 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 14:10:17,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:17,242 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 813 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:17,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 955 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 14:10:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 14:10:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.3314238952536825) internal successors, (1627), 1222 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 14:10:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1627 transitions. [2022-01-10 14:10:17,297 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1627 transitions. Word has length 99 [2022-01-10 14:10:17,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:17,297 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1627 transitions. [2022-01-10 14:10:17,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1627 transitions. [2022-01-10 14:10:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:17,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:17,298 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] [2022-01-10 14:10:17,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 14:10:17,298 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2139309411, now seen corresponding path program 1 times [2022-01-10 14:10:17,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:17,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937676355] [2022-01-10 14:10:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:17,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:17,337 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 14:10:17,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:17,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937676355] [2022-01-10 14:10:17,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937676355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:17,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:17,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:10:17,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870681621] [2022-01-10 14:10:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:17,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:10:17,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:10:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:10:17,338 INFO L87 Difference]: Start difference. First operand 1223 states and 1627 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:17,528 INFO L93 Difference]: Finished difference Result 2934 states and 3939 transitions. [2022-01-10 14:10:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:10:17,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:17,533 INFO L225 Difference]: With dead ends: 2934 [2022-01-10 14:10:17,533 INFO L226 Difference]: Without dead ends: 1745 [2022-01-10 14:10:17,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:10:17,534 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 2518 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2518 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:17,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2518 Valid, 2069 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:10:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2022-01-10 14:10:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1229. [2022-01-10 14:10:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.3167752442996743) internal successors, (1617), 1228 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states 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 14:10:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1617 transitions. [2022-01-10 14:10:17,615 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1617 transitions. Word has length 99 [2022-01-10 14:10:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:17,615 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1617 transitions. [2022-01-10 14:10:17,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1617 transitions. [2022-01-10 14:10:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:17,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:17,615 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] [2022-01-10 14:10:17,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 14:10:17,617 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1531232548, now seen corresponding path program 1 times [2022-01-10 14:10:17,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:17,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576072851] [2022-01-10 14:10:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:17,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:17,650 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 14:10:17,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:17,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576072851] [2022-01-10 14:10:17,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576072851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:17,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:17,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:10:17,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880696527] [2022-01-10 14:10:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:17,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:10:17,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:10:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:10:17,651 INFO L87 Difference]: Start difference. First operand 1229 states and 1617 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:17,867 INFO L93 Difference]: Finished difference Result 3106 states and 4114 transitions. [2022-01-10 14:10:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:10:17,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:17,870 INFO L225 Difference]: With dead ends: 3106 [2022-01-10 14:10:17,870 INFO L226 Difference]: Without dead ends: 1925 [2022-01-10 14:10:17,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:10:17,872 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 2284 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:17,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2284 Valid, 2435 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:10:17,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2022-01-10 14:10:17,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1235. [2022-01-10 14:10:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 1.3022690437601296) internal successors, (1607), 1234 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states 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 14:10:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1607 transitions. [2022-01-10 14:10:17,972 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1607 transitions. Word has length 99 [2022-01-10 14:10:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:17,973 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 1607 transitions. [2022-01-10 14:10:17,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1607 transitions. [2022-01-10 14:10:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:17,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:17,973 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] [2022-01-10 14:10:17,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 14:10:17,974 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2070342043, now seen corresponding path program 1 times [2022-01-10 14:10:17,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:17,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207382541] [2022-01-10 14:10:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:17,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:18,006 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 14:10:18,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207382541] [2022-01-10 14:10:18,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207382541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:18,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:18,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:18,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746477554] [2022-01-10 14:10:18,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:18,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:18,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:18,008 INFO L87 Difference]: Start difference. First operand 1235 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:18,161 INFO L93 Difference]: Finished difference Result 3441 states and 4478 transitions. [2022-01-10 14:10:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:18,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:18,165 INFO L225 Difference]: With dead ends: 3441 [2022-01-10 14:10:18,165 INFO L226 Difference]: Without dead ends: 2256 [2022-01-10 14:10:18,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:18,167 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 745 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:18,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1627 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-01-10 14:10:18,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2250. [2022-01-10 14:10:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2249 states have (on average 1.2939084037349933) internal successors, (2910), 2249 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states 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 14:10:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2910 transitions. [2022-01-10 14:10:18,336 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2910 transitions. Word has length 99 [2022-01-10 14:10:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:18,336 INFO L470 AbstractCegarLoop]: Abstraction has 2250 states and 2910 transitions. [2022-01-10 14:10:18,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2910 transitions. [2022-01-10 14:10:18,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:18,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:18,337 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] [2022-01-10 14:10:18,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 14:10:18,338 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1837431972, now seen corresponding path program 1 times [2022-01-10 14:10:18,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:18,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653597631] [2022-01-10 14:10:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:18,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:18,373 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 14:10:18,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:18,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653597631] [2022-01-10 14:10:18,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653597631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:18,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:18,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:10:18,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501935688] [2022-01-10 14:10:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:18,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:10:18,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:10:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:10:18,375 INFO L87 Difference]: Start difference. First operand 2250 states and 2910 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:18,767 INFO L93 Difference]: Finished difference Result 6210 states and 8057 transitions. [2022-01-10 14:10:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:10:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:18,772 INFO L225 Difference]: With dead ends: 6210 [2022-01-10 14:10:18,772 INFO L226 Difference]: Without dead ends: 4014 [2022-01-10 14:10:18,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:10:18,774 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 2441 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 4113 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:18,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 4113 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:10:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4014 states. [2022-01-10 14:10:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 2301. [2022-01-10 14:10:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2300 states have (on average 1.2804347826086957) internal successors, (2945), 2300 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 14:10:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 2945 transitions. [2022-01-10 14:10:18,932 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 2945 transitions. Word has length 99 [2022-01-10 14:10:18,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:18,932 INFO L470 AbstractCegarLoop]: Abstraction has 2301 states and 2945 transitions. [2022-01-10 14:10:18,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 2945 transitions. [2022-01-10 14:10:18,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:18,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:18,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:18,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 14:10:18,933 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:18,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:18,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1829672613, now seen corresponding path program 1 times [2022-01-10 14:10:18,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:18,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156187358] [2022-01-10 14:10:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:18,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:18,962 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 14:10:18,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:18,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156187358] [2022-01-10 14:10:18,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156187358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:18,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:18,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:18,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334810751] [2022-01-10 14:10:18,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:18,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:18,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:18,963 INFO L87 Difference]: Start difference. First operand 2301 states and 2945 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:19,155 INFO L93 Difference]: Finished difference Result 4533 states and 5799 transitions. [2022-01-10 14:10:19,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:19,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:19,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:19,159 INFO L225 Difference]: With dead ends: 4533 [2022-01-10 14:10:19,159 INFO L226 Difference]: Without dead ends: 2256 [2022-01-10 14:10:19,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:19,161 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 719 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:19,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 910 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-01-10 14:10:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2022-01-10 14:10:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.266518847006652) internal successors, (2856), 2255 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states 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 14:10:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2856 transitions. [2022-01-10 14:10:19,308 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2856 transitions. Word has length 99 [2022-01-10 14:10:19,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:19,308 INFO L470 AbstractCegarLoop]: Abstraction has 2256 states and 2856 transitions. [2022-01-10 14:10:19,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:19,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2856 transitions. [2022-01-10 14:10:19,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 14:10:19,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:19,309 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] [2022-01-10 14:10:19,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 14:10:19,309 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:19,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash 985200742, now seen corresponding path program 1 times [2022-01-10 14:10:19,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:19,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619679530] [2022-01-10 14:10:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:19,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:19,337 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 14:10:19,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:19,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619679530] [2022-01-10 14:10:19,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619679530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:19,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:19,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:10:19,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886544493] [2022-01-10 14:10:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:19,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:19,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:19,338 INFO L87 Difference]: Start difference. First operand 2256 states and 2856 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:19,658 INFO L93 Difference]: Finished difference Result 6589 states and 8351 transitions. [2022-01-10 14:10:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:19,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 14:10:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:19,665 INFO L225 Difference]: With dead ends: 6589 [2022-01-10 14:10:19,665 INFO L226 Difference]: Without dead ends: 4362 [2022-01-10 14:10:19,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:19,668 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 738 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:19,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 1583 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2022-01-10 14:10:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4172. [2022-01-10 14:10:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4172 states, 4171 states have (on average 1.2615679693119155) internal successors, (5262), 4171 states have internal predecessors, (5262), 0 states have call successors, (0), 0 states 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 14:10:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 5262 transitions. [2022-01-10 14:10:20,013 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 5262 transitions. Word has length 99 [2022-01-10 14:10:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:20,013 INFO L470 AbstractCegarLoop]: Abstraction has 4172 states and 5262 transitions. [2022-01-10 14:10:20,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 14:10:20,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 5262 transitions. [2022-01-10 14:10:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 14:10:20,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:20,015 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:20,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 14:10:20,016 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1362993848, now seen corresponding path program 1 times [2022-01-10 14:10:20,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:20,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908832018] [2022-01-10 14:10:20,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:20,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:20,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:20,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908832018] [2022-01-10 14:10:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908832018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:20,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:20,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:20,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297742587] [2022-01-10 14:10:20,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:20,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:20,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:20,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:20,055 INFO L87 Difference]: Start difference. First operand 4172 states and 5262 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 14:10:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:20,665 INFO L93 Difference]: Finished difference Result 12254 states and 15486 transitions. [2022-01-10 14:10:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-01-10 14:10:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:20,677 INFO L225 Difference]: With dead ends: 12254 [2022-01-10 14:10:20,677 INFO L226 Difference]: Without dead ends: 8117 [2022-01-10 14:10:20,682 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 14:10:20,683 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 756 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:20,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 1580 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8117 states. [2022-01-10 14:10:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 7751. [2022-01-10 14:10:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7751 states, 7750 states have (on average 1.2588387096774194) internal successors, (9756), 7750 states have internal predecessors, (9756), 0 states have call successors, (0), 0 states 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 14:10:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7751 states to 7751 states and 9756 transitions. [2022-01-10 14:10:21,248 INFO L78 Accepts]: Start accepts. Automaton has 7751 states and 9756 transitions. Word has length 160 [2022-01-10 14:10:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:21,248 INFO L470 AbstractCegarLoop]: Abstraction has 7751 states and 9756 transitions. [2022-01-10 14:10:21,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 14:10:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 7751 states and 9756 transitions. [2022-01-10 14:10:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 14:10:21,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:21,252 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:21,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 14:10:21,252 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:21,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:21,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1524850663, now seen corresponding path program 1 times [2022-01-10 14:10:21,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:21,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141775144] [2022-01-10 14:10:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:21,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:21,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:21,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141775144] [2022-01-10 14:10:21,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141775144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:21,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:21,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:21,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518247850] [2022-01-10 14:10:21,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:21,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:21,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:21,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:21,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:21,293 INFO L87 Difference]: Start difference. First operand 7751 states and 9756 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 14:10:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:22,479 INFO L93 Difference]: Finished difference Result 22753 states and 28453 transitions. [2022-01-10 14:10:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:22,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-01-10 14:10:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:22,503 INFO L225 Difference]: With dead ends: 22753 [2022-01-10 14:10:22,504 INFO L226 Difference]: Without dead ends: 15091 [2022-01-10 14:10:22,514 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 14:10:22,514 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 654 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:22,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 1846 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:22,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15091 states. [2022-01-10 14:10:23,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15091 to 14757. [2022-01-10 14:10:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14757 states, 14756 states have (on average 1.2420032529140688) internal successors, (18327), 14756 states have internal predecessors, (18327), 0 states have call successors, (0), 0 states 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 14:10:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14757 states to 14757 states and 18327 transitions. [2022-01-10 14:10:23,613 INFO L78 Accepts]: Start accepts. Automaton has 14757 states and 18327 transitions. Word has length 160 [2022-01-10 14:10:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:23,613 INFO L470 AbstractCegarLoop]: Abstraction has 14757 states and 18327 transitions. [2022-01-10 14:10:23,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 14:10:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 14757 states and 18327 transitions. [2022-01-10 14:10:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 14:10:23,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:23,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:23,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 14:10:23,620 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:23,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1830485192, now seen corresponding path program 1 times [2022-01-10 14:10:23,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:23,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412632401] [2022-01-10 14:10:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:23,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:10:23,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:23,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412632401] [2022-01-10 14:10:23,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412632401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:23,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:23,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:23,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702911493] [2022-01-10 14:10:23,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:23,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:23,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:23,646 INFO L87 Difference]: Start difference. First operand 14757 states and 18327 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 14:10:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:24,662 INFO L93 Difference]: Finished difference Result 29393 states and 36513 transitions. [2022-01-10 14:10:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 160 [2022-01-10 14:10:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:24,684 INFO L225 Difference]: With dead ends: 29393 [2022-01-10 14:10:24,684 INFO L226 Difference]: Without dead ends: 14675 [2022-01-10 14:10:24,700 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 14:10:24,700 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 852 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:24,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 858 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14675 states. [2022-01-10 14:10:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14675 to 14675. [2022-01-10 14:10:26,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14675 states, 14674 states have (on average 1.2424015265094726) internal successors, (18231), 14674 states have internal predecessors, (18231), 0 states have call successors, (0), 0 states 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 14:10:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14675 states to 14675 states and 18231 transitions. [2022-01-10 14:10:26,029 INFO L78 Accepts]: Start accepts. Automaton has 14675 states and 18231 transitions. Word has length 160 [2022-01-10 14:10:26,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:26,029 INFO L470 AbstractCegarLoop]: Abstraction has 14675 states and 18231 transitions. [2022-01-10 14:10:26,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 14:10:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 14675 states and 18231 transitions. [2022-01-10 14:10:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 14:10:26,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:26,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:26,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 14:10:26,035 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:26,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:26,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1199469990, now seen corresponding path program 1 times [2022-01-10 14:10:26,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:26,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394601661] [2022-01-10 14:10:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:26,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:26,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:26,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394601661] [2022-01-10 14:10:26,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394601661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:26,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:26,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:26,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013058036] [2022-01-10 14:10:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:26,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:26,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:26,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:26,073 INFO L87 Difference]: Start difference. First operand 14675 states and 18231 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 14:10:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:27,950 INFO L93 Difference]: Finished difference Result 41912 states and 51942 transitions. [2022-01-10 14:10:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-01-10 14:10:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:27,989 INFO L225 Difference]: With dead ends: 41912 [2022-01-10 14:10:27,989 INFO L226 Difference]: Without dead ends: 27326 [2022-01-10 14:10:28,003 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 14:10:28,004 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 615 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2048 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 14:10:28,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 2048 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27326 states. [2022-01-10 14:10:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27326 to 27324. [2022-01-10 14:10:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27324 states, 27323 states have (on average 1.2345642864985544) internal successors, (33732), 27323 states have internal predecessors, (33732), 0 states have call successors, (0), 0 states 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 14:10:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27324 states to 27324 states and 33732 transitions. [2022-01-10 14:10:30,203 INFO L78 Accepts]: Start accepts. Automaton has 27324 states and 33732 transitions. Word has length 161 [2022-01-10 14:10:30,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:30,204 INFO L470 AbstractCegarLoop]: Abstraction has 27324 states and 33732 transitions. [2022-01-10 14:10:30,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 14:10:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 27324 states and 33732 transitions. [2022-01-10 14:10:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 14:10:30,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:30,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:30,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 14:10:30,215 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:30,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:30,216 INFO L85 PathProgramCache]: Analyzing trace with hash 893835461, now seen corresponding path program 1 times [2022-01-10 14:10:30,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:30,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460868040] [2022-01-10 14:10:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:30,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:10:30,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:30,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460868040] [2022-01-10 14:10:30,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460868040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:30,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:30,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:30,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253342417] [2022-01-10 14:10:30,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:30,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:30,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:30,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:30,248 INFO L87 Difference]: Start difference. First operand 27324 states and 33732 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:32,296 INFO L93 Difference]: Finished difference Result 54478 states and 67269 transitions. [2022-01-10 14:10:32,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:32,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 161 [2022-01-10 14:10:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:32,335 INFO L225 Difference]: With dead ends: 54478 [2022-01-10 14:10:32,335 INFO L226 Difference]: Without dead ends: 27243 [2022-01-10 14:10:32,360 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 14:10:32,361 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 850 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:32,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 857 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27243 states. [2022-01-10 14:10:34,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27243 to 27243. [2022-01-10 14:10:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27243 states, 27242 states have (on average 1.234784523896924) internal successors, (33638), 27242 states have internal predecessors, (33638), 0 states have call successors, (0), 0 states 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 14:10:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27243 states to 27243 states and 33638 transitions. [2022-01-10 14:10:34,664 INFO L78 Accepts]: Start accepts. Automaton has 27243 states and 33638 transitions. Word has length 161 [2022-01-10 14:10:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:34,664 INFO L470 AbstractCegarLoop]: Abstraction has 27243 states and 33638 transitions. [2022-01-10 14:10:34,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:10:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 27243 states and 33638 transitions. [2022-01-10 14:10:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 14:10:34,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:34,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:34,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 14:10:34,673 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:34,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:34,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1674323034, now seen corresponding path program 1 times [2022-01-10 14:10:34,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:34,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556956896] [2022-01-10 14:10:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:34,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:34,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:34,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556956896] [2022-01-10 14:10:34,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556956896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:34,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:34,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:34,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464154550] [2022-01-10 14:10:34,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:34,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:34,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:34,718 INFO L87 Difference]: Start difference. First operand 27243 states and 33638 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 14:10:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:38,604 INFO L93 Difference]: Finished difference Result 79631 states and 98179 transitions. [2022-01-10 14:10:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:38,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-01-10 14:10:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:38,684 INFO L225 Difference]: With dead ends: 79631 [2022-01-10 14:10:38,684 INFO L226 Difference]: Without dead ends: 52477 [2022-01-10 14:10:38,710 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 14:10:38,711 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 620 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2019 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 14:10:38,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 2019 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:38,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52477 states. [2022-01-10 14:10:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52477 to 52475. [2022-01-10 14:10:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52475 states, 52474 states have (on average 1.2297328200632693) internal successors, (64529), 52474 states have internal predecessors, (64529), 0 states have call successors, (0), 0 states 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 14:10:42,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52475 states to 52475 states and 64529 transitions. [2022-01-10 14:10:42,926 INFO L78 Accepts]: Start accepts. Automaton has 52475 states and 64529 transitions. Word has length 162 [2022-01-10 14:10:42,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:42,926 INFO L470 AbstractCegarLoop]: Abstraction has 52475 states and 64529 transitions. [2022-01-10 14:10:42,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 14:10:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 52475 states and 64529 transitions. [2022-01-10 14:10:42,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 14:10:42,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:42,943 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:42,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 14:10:42,943 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1979957563, now seen corresponding path program 1 times [2022-01-10 14:10:42,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:42,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672374486] [2022-01-10 14:10:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:42,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:10:42,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:42,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672374486] [2022-01-10 14:10:42,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672374486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:42,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:42,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:42,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755233021] [2022-01-10 14:10:42,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:42,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:42,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:42,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:42,968 INFO L87 Difference]: Start difference. First operand 52475 states and 64529 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 14:10:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:46,243 INFO L93 Difference]: Finished difference Result 92249 states and 113490 transitions. [2022-01-10 14:10:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 162 [2022-01-10 14:10:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:46,365 INFO L225 Difference]: With dead ends: 92249 [2022-01-10 14:10:46,365 INFO L226 Difference]: Without dead ends: 39863 [2022-01-10 14:10:46,394 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 14:10:46,395 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 848 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:46,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 856 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39863 states. [2022-01-10 14:10:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39863 to 39863. [2022-01-10 14:10:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39863 states, 39862 states have (on average 1.230771160503738) internal successors, (49061), 39862 states have internal predecessors, (49061), 0 states have call successors, (0), 0 states 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 14:10:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39863 states to 39863 states and 49061 transitions. [2022-01-10 14:10:49,592 INFO L78 Accepts]: Start accepts. Automaton has 39863 states and 49061 transitions. Word has length 162 [2022-01-10 14:10:49,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:10:49,592 INFO L470 AbstractCegarLoop]: Abstraction has 39863 states and 49061 transitions. [2022-01-10 14:10:49,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 14:10:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 39863 states and 49061 transitions. [2022-01-10 14:10:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 14:10:49,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:10:49,604 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:10:49,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 14:10:49,605 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:10:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:10:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash 720565719, now seen corresponding path program 1 times [2022-01-10 14:10:49,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:10:49,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288927858] [2022-01-10 14:10:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:10:49,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:10:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:10:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:10:49,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:10:49,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288927858] [2022-01-10 14:10:49,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288927858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:10:49,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:10:49,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:10:49,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79218952] [2022-01-10 14:10:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:10:49,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:10:49,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:10:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:10:49,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:10:49,662 INFO L87 Difference]: Start difference. First operand 39863 states and 49061 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 14:10:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:10:55,636 INFO L93 Difference]: Finished difference Result 115826 states and 142528 transitions. [2022-01-10 14:10:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:10:55,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2022-01-10 14:10:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:10:55,755 INFO L225 Difference]: With dead ends: 115826 [2022-01-10 14:10:55,755 INFO L226 Difference]: Without dead ends: 76052 [2022-01-10 14:10:55,795 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 14:10:55,796 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 687 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:10:55,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 1909 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:10:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76052 states. [2022-01-10 14:11:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76052 to 74322. [2022-01-10 14:11:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74322 states, 74321 states have (on average 1.2276207263088494) internal successors, (91238), 74321 states have internal predecessors, (91238), 0 states have call successors, (0), 0 states 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 14:11:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74322 states to 74322 states and 91238 transitions. [2022-01-10 14:11:02,081 INFO L78 Accepts]: Start accepts. Automaton has 74322 states and 91238 transitions. Word has length 163 [2022-01-10 14:11:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:11:02,082 INFO L470 AbstractCegarLoop]: Abstraction has 74322 states and 91238 transitions. [2022-01-10 14:11:02,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 14:11:02,082 INFO L276 IsEmpty]: Start isEmpty. Operand 74322 states and 91238 transitions. [2022-01-10 14:11:02,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 14:11:02,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:11:02,103 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:11:02,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 14:11:02,103 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:11:02,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:11:02,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1491484599, now seen corresponding path program 1 times [2022-01-10 14:11:02,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:11:02,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986676188] [2022-01-10 14:11:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:11:02,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:11:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:11:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:11:02,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:11:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986676188] [2022-01-10 14:11:02,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986676188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:11:02,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:11:02,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:11:02,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96037535] [2022-01-10 14:11:02,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:11:02,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:11:02,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:11:02,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:11:02,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:11:02,128 INFO L87 Difference]: Start difference. First operand 74322 states and 91238 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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 14:11:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:11:08,500 INFO L93 Difference]: Finished difference Result 148506 states and 182321 transitions. [2022-01-10 14:11:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:11:08,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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 163 [2022-01-10 14:11:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:11:08,612 INFO L225 Difference]: With dead ends: 148506 [2022-01-10 14:11:08,613 INFO L226 Difference]: Without dead ends: 74243 [2022-01-10 14:11:08,658 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 14:11:08,659 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 846 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:11:08,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 855 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:11:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74243 states. [2022-01-10 14:11:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74243 to 74243. [2022-01-10 14:11:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74243 states, 74242 states have (on average 1.2277147706150158) internal successors, (91148), 74242 states have internal predecessors, (91148), 0 states have call successors, (0), 0 states 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 14:11:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74243 states to 74243 states and 91148 transitions. [2022-01-10 14:11:15,171 INFO L78 Accepts]: Start accepts. Automaton has 74243 states and 91148 transitions. Word has length 163 [2022-01-10 14:11:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:11:15,171 INFO L470 AbstractCegarLoop]: Abstraction has 74243 states and 91148 transitions. [2022-01-10 14:11:15,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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 14:11:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 74243 states and 91148 transitions. [2022-01-10 14:11:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 14:11:15,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:11:15,193 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:11:15,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-10 14:11:15,193 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:11:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:11:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash -138389960, now seen corresponding path program 1 times [2022-01-10 14:11:15,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:11:15,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616549216] [2022-01-10 14:11:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:11:15,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:11:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:11:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:11:15,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:11:15,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616549216] [2022-01-10 14:11:15,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616549216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:11:15,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:11:15,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:11:15,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353929756] [2022-01-10 14:11:15,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:11:15,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:11:15,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:11:15,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:11:15,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:11:15,251 INFO L87 Difference]: Start difference. First operand 74243 states and 91148 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)