/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:35:35,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:35:35,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:35:35,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:35:35,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:35:35,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:35:35,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:35:35,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:35:35,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:35:35,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:35:35,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:35:35,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:35:35,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:35:35,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:35:35,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:35:35,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:35:35,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:35:35,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:35:35,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:35:35,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:35:35,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:35:35,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:35:35,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:35:35,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:35:35,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:35:35,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:35:35,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:35:35,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:35:35,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:35:35,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:35:35,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:35:35,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:35:35,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:35:35,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:35:35,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:35:35,779 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:35:35,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:35:35,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:35:35,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:35:35,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:35:35,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:35:35,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:35:35,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:35:35,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:35:35,780 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:35:35,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:35:35,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:35:35,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:35:35,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:35:35,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:35:35,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:35:35,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:35:35,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:35:35,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:35:35,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:35:35,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:35:35,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:35:35,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:35:35,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:35:35,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:35:35,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:35:35,784 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:35:35,784 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:35:36,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:35:36,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:35:36,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:35:36,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:35:36,038 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:35:36,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c [2022-01-10 19:35:36,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42835d03/517afa85bbb5477f903b3844953babbd/FLAGccb0db09a [2022-01-10 19:35:36,797 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:35:36,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c [2022-01-10 19:35:36,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42835d03/517afa85bbb5477f903b3844953babbd/FLAGccb0db09a [2022-01-10 19:35:37,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42835d03/517afa85bbb5477f903b3844953babbd [2022-01-10 19:35:37,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:35:37,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:35:37,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:35:37,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:35:37,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:35:37,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:35:37" (1/1) ... [2022-01-10 19:35:37,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c17dbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:37, skipping insertion in model container [2022-01-10 19:35:37,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:35:37" (1/1) ... [2022-01-10 19:35:37,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:35:37,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:35:38,802 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/Problem05_label48+token_ring.13.cil-2.c[375709,375722] [2022-01-10 19:35:38,836 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/Problem05_label48+token_ring.13.cil-2.c[383339,383352] [2022-01-10 19:35:39,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:35:39,119 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:35:39,751 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/Problem05_label48+token_ring.13.cil-2.c[375709,375722] [2022-01-10 19:35:39,757 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/Problem05_label48+token_ring.13.cil-2.c[383339,383352] [2022-01-10 19:35:39,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:35:39,829 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:35:39,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39 WrapperNode [2022-01-10 19:35:39,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:35:39,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:35:39,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:35:39,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:35:39,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:39,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,275 INFO L137 Inliner]: procedures = 71, calls = 80, calls flagged for inlining = 75, calls inlined = 312, statements flattened = 16988 [2022-01-10 19:35:40,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:35:40,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:35:40,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:35:40,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:35:40,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:35:40,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:35:40,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:35:40,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:35:40,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (1/1) ... [2022-01-10 19:35:40,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:35:40,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:35:40,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:35:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:35:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:35:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:35:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:35:40,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:35:41,059 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:35:41,060 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:35:49,159 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:35:49,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:35:49,198 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 19:35:49,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:49 BoogieIcfgContainer [2022-01-10 19:35:49,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:35:49,205 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:35:49,205 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:35:49,206 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:35:49,208 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:49" (1/1) ... [2022-01-10 19:35:50,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:35:50 BasicIcfg [2022-01-10 19:35:50,738 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:35:50,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:35:50,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:35:50,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:35:50,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:35:37" (1/4) ... [2022-01-10 19:35:50,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183f6e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:35:50, skipping insertion in model container [2022-01-10 19:35:50,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:39" (2/4) ... [2022-01-10 19:35:50,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183f6e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:35:50, skipping insertion in model container [2022-01-10 19:35:50,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:49" (3/4) ... [2022-01-10 19:35:50,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183f6e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:35:50, skipping insertion in model container [2022-01-10 19:35:50,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:35:50" (4/4) ... [2022-01-10 19:35:50,744 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.13.cil-2.cTransformedIcfg [2022-01-10 19:35:50,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:35:50,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:35:50,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:35:50,801 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:35:50,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:35:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 4208 states, 4205 states have (on average 1.6910820451843045) internal successors, (7111), 4207 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:50,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:50,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:50,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:50,884 INFO L85 PathProgramCache]: Analyzing trace with hash 249960507, now seen corresponding path program 1 times [2022-01-10 19:35:50,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:50,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898068326] [2022-01-10 19:35:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:50,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:51,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:51,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898068326] [2022-01-10 19:35:51,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898068326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:51,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:51,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:51,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833551380] [2022-01-10 19:35:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:51,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:51,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:51,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:51,325 INFO L87 Difference]: Start difference. First operand has 4208 states, 4205 states have (on average 1.6910820451843045) internal successors, (7111), 4207 states have internal predecessors, (7111), 0 states have call successors, (0), 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 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:51,557 INFO L93 Difference]: Finished difference Result 8404 states and 14199 transitions. [2022-01-10 19:35:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:51,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:51,588 INFO L225 Difference]: With dead ends: 8404 [2022-01-10 19:35:51,588 INFO L226 Difference]: Without dead ends: 4141 [2022-01-10 19:35:51,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:51,605 INFO L933 BasicCegarLoop]: 7014 mSDtfsCounter, 2981 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2981 SdHoareTripleChecker+Valid, 11036 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 19:35:51,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2981 Valid, 11036 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2022-01-10 19:35:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4141. [2022-01-10 19:35:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 4139 states have (on average 1.678183136023194) internal successors, (6946), 4140 states have internal predecessors, (6946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6946 transitions. [2022-01-10 19:35:51,760 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6946 transitions. Word has length 176 [2022-01-10 19:35:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:51,760 INFO L470 AbstractCegarLoop]: Abstraction has 4141 states and 6946 transitions. [2022-01-10 19:35:51,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6946 transitions. [2022-01-10 19:35:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:51,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:51,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:51,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:35:51,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:51,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash 682106, now seen corresponding path program 1 times [2022-01-10 19:35:51,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:51,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997135784] [2022-01-10 19:35:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:51,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:51,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997135784] [2022-01-10 19:35:51,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997135784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:51,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:51,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:51,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927378804] [2022-01-10 19:35:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:51,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:51,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:51,928 INFO L87 Difference]: Start difference. First operand 4141 states and 6946 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:52,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:52,235 INFO L93 Difference]: Finished difference Result 7886 states and 12459 transitions. [2022-01-10 19:35:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:52,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:52,257 INFO L225 Difference]: With dead ends: 7886 [2022-01-10 19:35:52,258 INFO L226 Difference]: Without dead ends: 5886 [2022-01-10 19:35:52,266 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 19:35:52,267 INFO L933 BasicCegarLoop]: 6940 mSDtfsCounter, 6778 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6778 SdHoareTripleChecker+Valid, 9635 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 19:35:52,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6778 Valid, 9635 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2022-01-10 19:35:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 5884. [2022-01-10 19:35:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.615096905814349) internal successors, (9500), 5883 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:52,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9500 transitions. [2022-01-10 19:35:52,415 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9500 transitions. Word has length 176 [2022-01-10 19:35:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:52,416 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9500 transitions. [2022-01-10 19:35:52,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:52,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9500 transitions. [2022-01-10 19:35:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:52,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:52,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:52,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:35:52,427 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2105020774, now seen corresponding path program 1 times [2022-01-10 19:35:52,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:52,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36190602] [2022-01-10 19:35:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:52,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:52,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:52,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36190602] [2022-01-10 19:35:52,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36190602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:52,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:52,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:52,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853446196] [2022-01-10 19:35:52,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:52,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:52,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:52,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:52,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:52,516 INFO L87 Difference]: Start difference. First operand 5884 states and 9500 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:52,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:52,638 INFO L93 Difference]: Finished difference Result 9626 states and 15007 transitions. [2022-01-10 19:35:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:52,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:52,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:52,657 INFO L225 Difference]: With dead ends: 9626 [2022-01-10 19:35:52,657 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:52,666 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 19:35:52,668 INFO L933 BasicCegarLoop]: 6934 mSDtfsCounter, 6918 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6918 SdHoareTripleChecker+Valid, 6934 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 19:35:52,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6918 Valid, 6934 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:52,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6137368242094525) internal successors, (9492), 5883 states have internal predecessors, (9492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9492 transitions. [2022-01-10 19:35:52,821 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9492 transitions. Word has length 176 [2022-01-10 19:35:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:52,821 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9492 transitions. [2022-01-10 19:35:52,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9492 transitions. [2022-01-10 19:35:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:52,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:52,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:52,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:35:52,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1429283962, now seen corresponding path program 1 times [2022-01-10 19:35:52,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:52,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025494404] [2022-01-10 19:35:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:52,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:52,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:52,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025494404] [2022-01-10 19:35:52,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025494404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:52,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:52,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:52,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939323210] [2022-01-10 19:35:52,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:52,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:52,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:52,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:52,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:52,882 INFO L87 Difference]: Start difference. First operand 5884 states and 9492 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:53,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:53,004 INFO L93 Difference]: Finished difference Result 9625 states and 14990 transitions. [2022-01-10 19:35:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:53,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:53,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:53,023 INFO L225 Difference]: With dead ends: 9625 [2022-01-10 19:35:53,023 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:53,030 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 19:35:53,031 INFO L933 BasicCegarLoop]: 6929 mSDtfsCounter, 6912 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6912 SdHoareTripleChecker+Valid, 6929 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 19:35:53,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6912 Valid, 6929 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6123767426045563) internal successors, (9484), 5883 states have internal predecessors, (9484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9484 transitions. [2022-01-10 19:35:53,358 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9484 transitions. Word has length 176 [2022-01-10 19:35:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:53,359 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9484 transitions. [2022-01-10 19:35:53,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9484 transitions. [2022-01-10 19:35:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:53,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:53,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:53,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:35:53,361 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -812010854, now seen corresponding path program 1 times [2022-01-10 19:35:53,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:53,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223071065] [2022-01-10 19:35:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:53,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:53,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:53,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223071065] [2022-01-10 19:35:53,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223071065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:53,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:53,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:53,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33975906] [2022-01-10 19:35:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:53,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:53,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:53,407 INFO L87 Difference]: Start difference. First operand 5884 states and 9484 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:53,542 INFO L93 Difference]: Finished difference Result 9624 states and 14973 transitions. [2022-01-10 19:35:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:53,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:53,557 INFO L225 Difference]: With dead ends: 9624 [2022-01-10 19:35:53,558 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:53,563 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 19:35:53,564 INFO L933 BasicCegarLoop]: 6924 mSDtfsCounter, 6906 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6906 SdHoareTripleChecker+Valid, 6924 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 19:35:53,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6906 Valid, 6924 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:53,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.61101666099966) internal successors, (9476), 5883 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9476 transitions. [2022-01-10 19:35:53,730 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9476 transitions. Word has length 176 [2022-01-10 19:35:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:53,733 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9476 transitions. [2022-01-10 19:35:53,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9476 transitions. [2022-01-10 19:35:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:53,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:53,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:53,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:35:53,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash -53026694, now seen corresponding path program 1 times [2022-01-10 19:35:53,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:53,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092667209] [2022-01-10 19:35:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:53,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:53,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:53,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092667209] [2022-01-10 19:35:53,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092667209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:53,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:53,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:53,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767222718] [2022-01-10 19:35:53,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:53,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:53,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:53,796 INFO L87 Difference]: Start difference. First operand 5884 states and 9476 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:53,931 INFO L93 Difference]: Finished difference Result 9623 states and 14956 transitions. [2022-01-10 19:35:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:53,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:53,945 INFO L225 Difference]: With dead ends: 9623 [2022-01-10 19:35:53,945 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:53,952 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 19:35:53,956 INFO L933 BasicCegarLoop]: 6919 mSDtfsCounter, 6900 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6900 SdHoareTripleChecker+Valid, 6919 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 19:35:53,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6900 Valid, 6919 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6096565793947637) internal successors, (9468), 5883 states have internal predecessors, (9468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9468 transitions. [2022-01-10 19:35:54,119 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9468 transitions. Word has length 176 [2022-01-10 19:35:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:54,120 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9468 transitions. [2022-01-10 19:35:54,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9468 transitions. [2022-01-10 19:35:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:54,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:54,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:54,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:35:54,122 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash -28543334, now seen corresponding path program 1 times [2022-01-10 19:35:54,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:54,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105091588] [2022-01-10 19:35:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:54,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:54,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:54,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105091588] [2022-01-10 19:35:54,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105091588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:54,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:54,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:54,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358565782] [2022-01-10 19:35:54,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:54,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:54,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:54,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:54,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:54,178 INFO L87 Difference]: Start difference. First operand 5884 states and 9468 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:54,323 INFO L93 Difference]: Finished difference Result 9622 states and 14939 transitions. [2022-01-10 19:35:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:54,335 INFO L225 Difference]: With dead ends: 9622 [2022-01-10 19:35:54,335 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:54,340 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 19:35:54,342 INFO L933 BasicCegarLoop]: 6914 mSDtfsCounter, 6894 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6894 SdHoareTripleChecker+Valid, 6914 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 19:35:54,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6894 Valid, 6914 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6082964977898675) internal successors, (9460), 5883 states have internal predecessors, (9460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9460 transitions. [2022-01-10 19:35:54,506 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9460 transitions. Word has length 176 [2022-01-10 19:35:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:54,507 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9460 transitions. [2022-01-10 19:35:54,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9460 transitions. [2022-01-10 19:35:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:54,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:54,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:54,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:35:54,509 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1967416198, now seen corresponding path program 1 times [2022-01-10 19:35:54,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:54,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910399613] [2022-01-10 19:35:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:54,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:54,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:54,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910399613] [2022-01-10 19:35:54,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910399613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:54,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:54,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:54,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98484784] [2022-01-10 19:35:54,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:54,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:54,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:54,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:54,559 INFO L87 Difference]: Start difference. First operand 5884 states and 9460 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:54,717 INFO L93 Difference]: Finished difference Result 9621 states and 14922 transitions. [2022-01-10 19:35:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:54,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:54,730 INFO L225 Difference]: With dead ends: 9621 [2022-01-10 19:35:54,730 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:54,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:54,791 INFO L933 BasicCegarLoop]: 6909 mSDtfsCounter, 6888 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6888 SdHoareTripleChecker+Valid, 6909 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 19:35:54,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6888 Valid, 6909 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.606936416184971) internal successors, (9452), 5883 states have internal predecessors, (9452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9452 transitions. [2022-01-10 19:35:54,917 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9452 transitions. Word has length 176 [2022-01-10 19:35:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:54,918 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9452 transitions. [2022-01-10 19:35:54,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9452 transitions. [2022-01-10 19:35:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:54,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:54,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:54,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:35:54,920 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:54,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 48249498, now seen corresponding path program 1 times [2022-01-10 19:35:54,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:54,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563564032] [2022-01-10 19:35:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:54,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:54,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:54,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563564032] [2022-01-10 19:35:54,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563564032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:54,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:54,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:54,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625757563] [2022-01-10 19:35:54,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:54,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:54,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:54,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:54,965 INFO L87 Difference]: Start difference. First operand 5884 states and 9452 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:55,084 INFO L93 Difference]: Finished difference Result 9620 states and 14905 transitions. [2022-01-10 19:35:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:55,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:55,094 INFO L225 Difference]: With dead ends: 9620 [2022-01-10 19:35:55,094 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:55,099 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 19:35:55,101 INFO L933 BasicCegarLoop]: 6904 mSDtfsCounter, 6882 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6882 SdHoareTripleChecker+Valid, 6904 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 19:35:55,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6882 Valid, 6904 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:55,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:55,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6055763345800749) internal successors, (9444), 5883 states have internal predecessors, (9444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9444 transitions. [2022-01-10 19:35:55,247 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9444 transitions. Word has length 176 [2022-01-10 19:35:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:55,247 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9444 transitions. [2022-01-10 19:35:55,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9444 transitions. [2022-01-10 19:35:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:55,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:55,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:55,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:35:55,252 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:55,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:55,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2103486342, now seen corresponding path program 1 times [2022-01-10 19:35:55,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:55,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66285777] [2022-01-10 19:35:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:55,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:55,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:55,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66285777] [2022-01-10 19:35:55,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66285777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:55,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:55,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:55,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540943174] [2022-01-10 19:35:55,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:55,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:55,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:55,299 INFO L87 Difference]: Start difference. First operand 5884 states and 9444 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:55,424 INFO L93 Difference]: Finished difference Result 9619 states and 14888 transitions. [2022-01-10 19:35:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:55,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:55,436 INFO L225 Difference]: With dead ends: 9619 [2022-01-10 19:35:55,436 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:55,441 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 19:35:55,441 INFO L933 BasicCegarLoop]: 6899 mSDtfsCounter, 6876 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6876 SdHoareTripleChecker+Valid, 6899 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 19:35:55,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6876 Valid, 6899 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6042162529751784) internal successors, (9436), 5883 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9436 transitions. [2022-01-10 19:35:55,570 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9436 transitions. Word has length 176 [2022-01-10 19:35:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:55,570 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9436 transitions. [2022-01-10 19:35:55,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9436 transitions. [2022-01-10 19:35:55,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:55,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:55,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:55,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:35:55,572 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:55,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:55,573 INFO L85 PathProgramCache]: Analyzing trace with hash -510329190, now seen corresponding path program 1 times [2022-01-10 19:35:55,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:55,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553721274] [2022-01-10 19:35:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:55,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:55,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:55,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553721274] [2022-01-10 19:35:55,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553721274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:55,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:55,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:55,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017181035] [2022-01-10 19:35:55,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:55,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:55,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:55,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:55,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:55,621 INFO L87 Difference]: Start difference. First operand 5884 states and 9436 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:55,779 INFO L93 Difference]: Finished difference Result 9618 states and 14871 transitions. [2022-01-10 19:35:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:55,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:55,797 INFO L225 Difference]: With dead ends: 9618 [2022-01-10 19:35:55,797 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:55,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:55,804 INFO L933 BasicCegarLoop]: 6894 mSDtfsCounter, 6870 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6870 SdHoareTripleChecker+Valid, 6894 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 19:35:55,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6870 Valid, 6894 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6028561713702822) internal successors, (9428), 5883 states have internal predecessors, (9428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9428 transitions. [2022-01-10 19:35:55,970 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9428 transitions. Word has length 176 [2022-01-10 19:35:55,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:55,971 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9428 transitions. [2022-01-10 19:35:55,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9428 transitions. [2022-01-10 19:35:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:55,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:55,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:55,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:35:55,974 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:55,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1480725626, now seen corresponding path program 1 times [2022-01-10 19:35:55,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:55,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972770149] [2022-01-10 19:35:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:55,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:56,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:56,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972770149] [2022-01-10 19:35:56,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972770149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:56,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:56,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:56,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855177490] [2022-01-10 19:35:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:56,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:56,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:56,017 INFO L87 Difference]: Start difference. First operand 5884 states and 9428 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:56,188 INFO L93 Difference]: Finished difference Result 9617 states and 14854 transitions. [2022-01-10 19:35:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:56,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:56,199 INFO L225 Difference]: With dead ends: 9617 [2022-01-10 19:35:56,199 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:56,204 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 19:35:56,205 INFO L933 BasicCegarLoop]: 6889 mSDtfsCounter, 6864 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6864 SdHoareTripleChecker+Valid, 6889 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 19:35:56,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6864 Valid, 6889 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6014960897653858) internal successors, (9420), 5883 states have internal predecessors, (9420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9420 transitions. [2022-01-10 19:35:56,374 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9420 transitions. Word has length 176 [2022-01-10 19:35:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:56,374 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9420 transitions. [2022-01-10 19:35:56,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9420 transitions. [2022-01-10 19:35:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:56,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:56,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:56,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:35:56,376 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1364540774, now seen corresponding path program 1 times [2022-01-10 19:35:56,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:56,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685828965] [2022-01-10 19:35:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:56,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:56,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:56,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685828965] [2022-01-10 19:35:56,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685828965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:56,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:56,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:56,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50735768] [2022-01-10 19:35:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:56,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:56,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:56,423 INFO L87 Difference]: Start difference. First operand 5884 states and 9420 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:56,579 INFO L93 Difference]: Finished difference Result 9615 states and 14835 transitions. [2022-01-10 19:35:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:56,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:56,590 INFO L225 Difference]: With dead ends: 9615 [2022-01-10 19:35:56,590 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:56,595 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 19:35:56,596 INFO L933 BasicCegarLoop]: 6884 mSDtfsCounter, 6857 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6857 SdHoareTripleChecker+Valid, 6884 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 19:35:56,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6857 Valid, 6884 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6001360081604896) internal successors, (9412), 5883 states have internal predecessors, (9412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9412 transitions. [2022-01-10 19:35:56,726 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9412 transitions. Word has length 176 [2022-01-10 19:35:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:56,727 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9412 transitions. [2022-01-10 19:35:56,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9412 transitions. [2022-01-10 19:35:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:56,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:56,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:56,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:35:56,728 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash -844597062, now seen corresponding path program 1 times [2022-01-10 19:35:56,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:56,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299692735] [2022-01-10 19:35:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:56,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:56,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:56,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299692735] [2022-01-10 19:35:56,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299692735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:56,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:56,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:56,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983756863] [2022-01-10 19:35:56,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:56,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:56,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:56,769 INFO L87 Difference]: Start difference. First operand 5884 states and 9412 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:56,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:56,921 INFO L93 Difference]: Finished difference Result 9614 states and 14818 transitions. [2022-01-10 19:35:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:56,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:56,932 INFO L225 Difference]: With dead ends: 9614 [2022-01-10 19:35:56,932 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:56,938 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 19:35:56,938 INFO L933 BasicCegarLoop]: 6879 mSDtfsCounter, 6851 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6851 SdHoareTripleChecker+Valid, 6879 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 19:35:56,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6851 Valid, 6879 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5987759265555934) internal successors, (9404), 5883 states have internal predecessors, (9404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:57,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9404 transitions. [2022-01-10 19:35:57,075 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9404 transitions. Word has length 176 [2022-01-10 19:35:57,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:57,076 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9404 transitions. [2022-01-10 19:35:57,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:57,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9404 transitions. [2022-01-10 19:35:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:57,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:57,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:57,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:35:57,077 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:57,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1527479962, now seen corresponding path program 1 times [2022-01-10 19:35:57,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:57,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733396658] [2022-01-10 19:35:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:57,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:57,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:57,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733396658] [2022-01-10 19:35:57,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733396658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:57,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:57,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:57,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284490367] [2022-01-10 19:35:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:57,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:57,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:57,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:57,125 INFO L87 Difference]: Start difference. First operand 5884 states and 9404 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:57,283 INFO L93 Difference]: Finished difference Result 9613 states and 14801 transitions. [2022-01-10 19:35:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:57,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:57,292 INFO L225 Difference]: With dead ends: 9613 [2022-01-10 19:35:57,292 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:57,298 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 19:35:57,299 INFO L933 BasicCegarLoop]: 6842 mSDtfsCounter, 6687 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 6980 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 19:35:57,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6687 Valid, 6980 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.592315538932336) internal successors, (9366), 5883 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9366 transitions. [2022-01-10 19:35:57,441 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9366 transitions. Word has length 176 [2022-01-10 19:35:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:57,441 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9366 transitions. [2022-01-10 19:35:57,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9366 transitions. [2022-01-10 19:35:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:57,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:57,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:57,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:35:57,442 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash 610354104, now seen corresponding path program 1 times [2022-01-10 19:35:57,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:57,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69975085] [2022-01-10 19:35:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:57,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:57,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:57,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69975085] [2022-01-10 19:35:57,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69975085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:57,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:57,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:57,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547156269] [2022-01-10 19:35:57,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:57,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:57,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:57,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:57,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:57,484 INFO L87 Difference]: Start difference. First operand 5884 states and 9366 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:57,646 INFO L93 Difference]: Finished difference Result 9612 states and 14724 transitions. [2022-01-10 19:35:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:57,657 INFO L225 Difference]: With dead ends: 9612 [2022-01-10 19:35:57,658 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:57,663 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 19:35:57,664 INFO L933 BasicCegarLoop]: 6821 mSDtfsCounter, 6666 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6666 SdHoareTripleChecker+Valid, 6958 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 19:35:57,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6666 Valid, 6958 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5858551513090786) internal successors, (9328), 5883 states have internal predecessors, (9328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9328 transitions. [2022-01-10 19:35:57,822 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9328 transitions. Word has length 176 [2022-01-10 19:35:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:57,822 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9328 transitions. [2022-01-10 19:35:57,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9328 transitions. [2022-01-10 19:35:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:57,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:57,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:57,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:35:57,823 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1576499287, now seen corresponding path program 1 times [2022-01-10 19:35:57,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:57,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156147025] [2022-01-10 19:35:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:57,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:57,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:57,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156147025] [2022-01-10 19:35:57,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156147025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:57,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:57,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:57,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263273763] [2022-01-10 19:35:57,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:57,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:57,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:57,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:57,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:57,859 INFO L87 Difference]: Start difference. First operand 5884 states and 9328 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:58,037 INFO L93 Difference]: Finished difference Result 9611 states and 14647 transitions. [2022-01-10 19:35:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:58,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:58,048 INFO L225 Difference]: With dead ends: 9611 [2022-01-10 19:35:58,048 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:58,056 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 19:35:58,057 INFO L933 BasicCegarLoop]: 6800 mSDtfsCounter, 6645 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6645 SdHoareTripleChecker+Valid, 6936 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 19:35:58,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6645 Valid, 6936 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:58,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5793947636858212) internal successors, (9290), 5883 states have internal predecessors, (9290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9290 transitions. [2022-01-10 19:35:58,214 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9290 transitions. Word has length 176 [2022-01-10 19:35:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:58,214 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9290 transitions. [2022-01-10 19:35:58,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9290 transitions. [2022-01-10 19:35:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:58,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:58,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:58,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:35:58,216 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:58,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1414803574, now seen corresponding path program 1 times [2022-01-10 19:35:58,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:58,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044767324] [2022-01-10 19:35:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:58,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:58,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:58,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044767324] [2022-01-10 19:35:58,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044767324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:58,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:58,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:58,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947610284] [2022-01-10 19:35:58,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:58,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:58,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:58,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:58,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:58,265 INFO L87 Difference]: Start difference. First operand 5884 states and 9290 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:58,461 INFO L93 Difference]: Finished difference Result 9610 states and 14570 transitions. [2022-01-10 19:35:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:58,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:58,474 INFO L225 Difference]: With dead ends: 9610 [2022-01-10 19:35:58,474 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:58,477 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 19:35:58,477 INFO L933 BasicCegarLoop]: 6779 mSDtfsCounter, 6624 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6624 SdHoareTripleChecker+Valid, 6914 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 19:35:58,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6624 Valid, 6914 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:58,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5729343760625638) internal successors, (9252), 5883 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9252 transitions. [2022-01-10 19:35:58,656 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9252 transitions. Word has length 176 [2022-01-10 19:35:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:58,656 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9252 transitions. [2022-01-10 19:35:58,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9252 transitions. [2022-01-10 19:35:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:58,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:58,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:58,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:35:58,658 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1940569195, now seen corresponding path program 1 times [2022-01-10 19:35:58,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:58,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552317622] [2022-01-10 19:35:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:58,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:58,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:58,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552317622] [2022-01-10 19:35:58,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552317622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:58,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:58,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:58,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922533003] [2022-01-10 19:35:58,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:58,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:58,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:58,716 INFO L87 Difference]: Start difference. First operand 5884 states and 9252 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:58,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:58,914 INFO L93 Difference]: Finished difference Result 9609 states and 14493 transitions. [2022-01-10 19:35:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:58,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:58,923 INFO L225 Difference]: With dead ends: 9609 [2022-01-10 19:35:58,923 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:58,926 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 19:35:58,926 INFO L933 BasicCegarLoop]: 6758 mSDtfsCounter, 6603 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6603 SdHoareTripleChecker+Valid, 6892 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 19:35:58,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6603 Valid, 6892 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:58,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5664739884393064) internal successors, (9214), 5883 states have internal predecessors, (9214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9214 transitions. [2022-01-10 19:35:59,068 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9214 transitions. Word has length 176 [2022-01-10 19:35:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:59,068 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9214 transitions. [2022-01-10 19:35:59,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9214 transitions. [2022-01-10 19:35:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:59,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:59,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:59,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:35:59,069 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1596949197, now seen corresponding path program 1 times [2022-01-10 19:35:59,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:59,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613113030] [2022-01-10 19:35:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:59,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:59,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:59,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613113030] [2022-01-10 19:35:59,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613113030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:59,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:59,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:59,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508792835] [2022-01-10 19:35:59,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:59,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:59,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:59,129 INFO L87 Difference]: Start difference. First operand 5884 states and 9214 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:59,329 INFO L93 Difference]: Finished difference Result 9608 states and 14416 transitions. [2022-01-10 19:35:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:59,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:59,338 INFO L225 Difference]: With dead ends: 9608 [2022-01-10 19:35:59,338 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:59,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:59,343 INFO L933 BasicCegarLoop]: 6737 mSDtfsCounter, 6582 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6582 SdHoareTripleChecker+Valid, 6870 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 19:35:59,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6582 Valid, 6870 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:59,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.560013600816049) internal successors, (9176), 5883 states have internal predecessors, (9176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9176 transitions. [2022-01-10 19:35:59,497 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9176 transitions. Word has length 176 [2022-01-10 19:35:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:59,497 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9176 transitions. [2022-01-10 19:35:59,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9176 transitions. [2022-01-10 19:35:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:59,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:59,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:59,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:35:59,499 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:59,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1885327662, now seen corresponding path program 1 times [2022-01-10 19:35:59,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:59,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134688474] [2022-01-10 19:35:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:59,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:59,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:59,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134688474] [2022-01-10 19:35:59,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134688474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:59,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:59,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:59,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274638027] [2022-01-10 19:35:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:59,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:59,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:59,543 INFO L87 Difference]: Start difference. First operand 5884 states and 9176 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:59,735 INFO L93 Difference]: Finished difference Result 9607 states and 14339 transitions. [2022-01-10 19:35:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:59,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:35:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:59,744 INFO L225 Difference]: With dead ends: 9607 [2022-01-10 19:35:59,744 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:35:59,749 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 19:35:59,749 INFO L933 BasicCegarLoop]: 6716 mSDtfsCounter, 6561 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 6848 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 19:35:59,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6561 Valid, 6848 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:59,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:35:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:35:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5535532131927916) internal successors, (9138), 5883 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9138 transitions. [2022-01-10 19:35:59,908 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9138 transitions. Word has length 176 [2022-01-10 19:35:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:59,908 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9138 transitions. [2022-01-10 19:35:59,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9138 transitions. [2022-01-10 19:35:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:35:59,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:59,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:59,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:35:59,910 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1672330255, now seen corresponding path program 1 times [2022-01-10 19:35:59,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:59,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019600068] [2022-01-10 19:35:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:59,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:59,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:59,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019600068] [2022-01-10 19:35:59,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019600068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:59,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:59,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:59,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946634469] [2022-01-10 19:35:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:59,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:59,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:59,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:59,949 INFO L87 Difference]: Start difference. First operand 5884 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:00,147 INFO L93 Difference]: Finished difference Result 9606 states and 14262 transitions. [2022-01-10 19:36:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:00,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:00,157 INFO L225 Difference]: With dead ends: 9606 [2022-01-10 19:36:00,157 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:36:00,165 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 19:36:00,167 INFO L933 BasicCegarLoop]: 6695 mSDtfsCounter, 6540 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6540 SdHoareTripleChecker+Valid, 6826 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 19:36:00,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6540 Valid, 6826 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:36:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:36:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5470928255695342) internal successors, (9100), 5883 states have internal predecessors, (9100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9100 transitions. [2022-01-10 19:36:00,356 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9100 transitions. Word has length 176 [2022-01-10 19:36:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:00,356 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9100 transitions. [2022-01-10 19:36:00,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9100 transitions. [2022-01-10 19:36:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:00,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:00,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:00,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:36:00,359 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:00,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:00,359 INFO L85 PathProgramCache]: Analyzing trace with hash 343168016, now seen corresponding path program 1 times [2022-01-10 19:36:00,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:00,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717672267] [2022-01-10 19:36:00,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:00,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:00,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:00,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717672267] [2022-01-10 19:36:00,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717672267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:00,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:00,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:36:00,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545784198] [2022-01-10 19:36:00,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:00,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:00,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:00,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:00,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:00,401 INFO L87 Difference]: Start difference. First operand 5884 states and 9100 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:00,592 INFO L93 Difference]: Finished difference Result 9605 states and 14185 transitions. [2022-01-10 19:36:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:00,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:00,604 INFO L225 Difference]: With dead ends: 9605 [2022-01-10 19:36:00,604 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:36:00,608 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 19:36:00,608 INFO L933 BasicCegarLoop]: 6674 mSDtfsCounter, 6519 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6519 SdHoareTripleChecker+Valid, 6804 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 19:36:00,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6519 Valid, 6804 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:36:00,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:36:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5406324379462768) internal successors, (9062), 5883 states have internal predecessors, (9062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9062 transitions. [2022-01-10 19:36:00,772 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9062 transitions. Word has length 176 [2022-01-10 19:36:00,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:00,772 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9062 transitions. [2022-01-10 19:36:00,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9062 transitions. [2022-01-10 19:36:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:00,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:00,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:00,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:36:00,774 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:00,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1653882322, now seen corresponding path program 1 times [2022-01-10 19:36:00,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:00,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381076044] [2022-01-10 19:36:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:00,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:00,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:00,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381076044] [2022-01-10 19:36:00,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381076044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:00,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:00,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:36:00,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780564172] [2022-01-10 19:36:00,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:00,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:00,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:00,813 INFO L87 Difference]: Start difference. First operand 5884 states and 9062 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:01,015 INFO L93 Difference]: Finished difference Result 9604 states and 14108 transitions. [2022-01-10 19:36:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:01,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:01,022 INFO L225 Difference]: With dead ends: 9604 [2022-01-10 19:36:01,022 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:36:01,025 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 19:36:01,026 INFO L933 BasicCegarLoop]: 6653 mSDtfsCounter, 6498 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6498 SdHoareTripleChecker+Valid, 6782 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 19:36:01,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6498 Valid, 6782 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:36:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:36:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5341720503230194) internal successors, (9024), 5883 states have internal predecessors, (9024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9024 transitions. [2022-01-10 19:36:01,201 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9024 transitions. Word has length 176 [2022-01-10 19:36:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:01,201 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9024 transitions. [2022-01-10 19:36:01,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:01,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9024 transitions. [2022-01-10 19:36:01,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:01,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:01,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:01,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:36:01,203 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:01,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1535373517, now seen corresponding path program 1 times [2022-01-10 19:36:01,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:01,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481809298] [2022-01-10 19:36:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:01,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:01,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:01,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481809298] [2022-01-10 19:36:01,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481809298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:01,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:01,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:36:01,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457076516] [2022-01-10 19:36:01,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:01,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:01,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:01,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:01,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:01,258 INFO L87 Difference]: Start difference. First operand 5884 states and 9024 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:01,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:01,488 INFO L93 Difference]: Finished difference Result 9603 states and 14031 transitions. [2022-01-10 19:36:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:01,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:01,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:01,497 INFO L225 Difference]: With dead ends: 9603 [2022-01-10 19:36:01,497 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:36:01,502 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 19:36:01,502 INFO L933 BasicCegarLoop]: 6632 mSDtfsCounter, 6477 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6477 SdHoareTripleChecker+Valid, 6760 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 19:36:01,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6477 Valid, 6760 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:36:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:36:01,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.527711662699762) internal successors, (8986), 5883 states have internal predecessors, (8986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8986 transitions. [2022-01-10 19:36:01,681 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8986 transitions. Word has length 176 [2022-01-10 19:36:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:01,682 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8986 transitions. [2022-01-10 19:36:01,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:01,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8986 transitions. [2022-01-10 19:36:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:01,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:01,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:01,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 19:36:01,683 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:01,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash -504732948, now seen corresponding path program 1 times [2022-01-10 19:36:01,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:01,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788614240] [2022-01-10 19:36:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:01,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:01,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:01,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788614240] [2022-01-10 19:36:01,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788614240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:01,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:01,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:36:01,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775480890] [2022-01-10 19:36:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:01,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:01,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:01,770 INFO L87 Difference]: Start difference. First operand 5884 states and 8986 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:02,014 INFO L93 Difference]: Finished difference Result 9602 states and 13954 transitions. [2022-01-10 19:36:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:02,021 INFO L225 Difference]: With dead ends: 9602 [2022-01-10 19:36:02,021 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:36:02,025 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 19:36:02,025 INFO L933 BasicCegarLoop]: 6611 mSDtfsCounter, 6456 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6456 SdHoareTripleChecker+Valid, 6738 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 19:36:02,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6456 Valid, 6738 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:02,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:36:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:36:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5212512750765046) internal successors, (8948), 5883 states have internal predecessors, (8948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8948 transitions. [2022-01-10 19:36:02,204 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8948 transitions. Word has length 176 [2022-01-10 19:36:02,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:02,205 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8948 transitions. [2022-01-10 19:36:02,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8948 transitions. [2022-01-10 19:36:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:02,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:02,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:02,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 19:36:02,206 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1555853323, now seen corresponding path program 1 times [2022-01-10 19:36:02,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:02,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707153923] [2022-01-10 19:36:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:02,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:02,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:02,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707153923] [2022-01-10 19:36:02,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707153923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:02,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:02,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:36:02,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703274133] [2022-01-10 19:36:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:02,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:02,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:02,243 INFO L87 Difference]: Start difference. First operand 5884 states and 8948 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:02,445 INFO L93 Difference]: Finished difference Result 9601 states and 13877 transitions. [2022-01-10 19:36:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:02,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:02,453 INFO L225 Difference]: With dead ends: 9601 [2022-01-10 19:36:02,454 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:36:02,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:02,458 INFO L933 BasicCegarLoop]: 6590 mSDtfsCounter, 6435 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6435 SdHoareTripleChecker+Valid, 6716 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 19:36:02,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6435 Valid, 6716 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:02,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:36:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:36:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5147908874532472) internal successors, (8910), 5883 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8910 transitions. [2022-01-10 19:36:02,651 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8910 transitions. Word has length 176 [2022-01-10 19:36:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:02,651 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8910 transitions. [2022-01-10 19:36:02,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8910 transitions. [2022-01-10 19:36:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:02,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:02,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:02,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 19:36:02,655 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash -254050262, now seen corresponding path program 1 times [2022-01-10 19:36:02,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:02,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477403327] [2022-01-10 19:36:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:02,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:02,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:02,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477403327] [2022-01-10 19:36:02,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477403327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:02,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:02,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:36:02,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627791242] [2022-01-10 19:36:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:02,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:02,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:02,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:02,699 INFO L87 Difference]: Start difference. First operand 5884 states and 8910 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:02,903 INFO L93 Difference]: Finished difference Result 9600 states and 13800 transitions. [2022-01-10 19:36:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:02,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:02,911 INFO L225 Difference]: With dead ends: 9600 [2022-01-10 19:36:02,912 INFO L226 Difference]: Without dead ends: 5884 [2022-01-10 19:36:02,916 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 19:36:02,916 INFO L933 BasicCegarLoop]: 6569 mSDtfsCounter, 6414 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6414 SdHoareTripleChecker+Valid, 6694 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 19:36:02,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6414 Valid, 6694 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-10 19:36:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-10 19:36:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5083304998299898) internal successors, (8872), 5883 states have internal predecessors, (8872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8872 transitions. [2022-01-10 19:36:03,173 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8872 transitions. Word has length 176 [2022-01-10 19:36:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:03,173 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8872 transitions. [2022-01-10 19:36:03,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:03,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8872 transitions. [2022-01-10 19:36:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:03,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:03,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:03,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 19:36:03,174 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash 692792265, now seen corresponding path program 1 times [2022-01-10 19:36:03,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:03,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752453843] [2022-01-10 19:36:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:03,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:03,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:03,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752453843] [2022-01-10 19:36:03,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752453843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:03,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:03,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:36:03,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884193338] [2022-01-10 19:36:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:03,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:36:03,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:03,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:36:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:36:03,233 INFO L87 Difference]: Start difference. First operand 5884 states and 8872 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:03,712 INFO L93 Difference]: Finished difference Result 10798 states and 15371 transitions. [2022-01-10 19:36:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:36:03,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:03,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:03,724 INFO L225 Difference]: With dead ends: 10798 [2022-01-10 19:36:03,724 INFO L226 Difference]: Without dead ends: 7096 [2022-01-10 19:36:03,730 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 19:36:03,732 INFO L933 BasicCegarLoop]: 6748 mSDtfsCounter, 7401 mSDsluCounter, 14386 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7401 SdHoareTripleChecker+Valid, 21134 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:36:03,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7401 Valid, 21134 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:36:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7096 states. [2022-01-10 19:36:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7096 to 5890. [2022-01-10 19:36:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 5888 states have (on average 1.502717391304348) internal successors, (8848), 5889 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8848 transitions. [2022-01-10 19:36:04,013 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8848 transitions. Word has length 176 [2022-01-10 19:36:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:04,013 INFO L470 AbstractCegarLoop]: Abstraction has 5890 states and 8848 transitions. [2022-01-10 19:36:04,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8848 transitions. [2022-01-10 19:36:04,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:04,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:04,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:04,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 19:36:04,015 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:04,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1979274570, now seen corresponding path program 1 times [2022-01-10 19:36:04,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:04,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325630636] [2022-01-10 19:36:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:04,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:04,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:04,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325630636] [2022-01-10 19:36:04,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325630636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:04,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:04,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:36:04,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555599017] [2022-01-10 19:36:04,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:04,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:36:04,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:36:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:36:04,089 INFO L87 Difference]: Start difference. First operand 5890 states and 8848 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:04,640 INFO L93 Difference]: Finished difference Result 11687 states and 16433 transitions. [2022-01-10 19:36:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:36:04,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:04,652 INFO L225 Difference]: With dead ends: 11687 [2022-01-10 19:36:04,653 INFO L226 Difference]: Without dead ends: 8014 [2022-01-10 19:36:04,657 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 19:36:04,657 INFO L933 BasicCegarLoop]: 6640 mSDtfsCounter, 6511 mSDsluCounter, 16330 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6511 SdHoareTripleChecker+Valid, 22970 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:36:04,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6511 Valid, 22970 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:36:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8014 states. [2022-01-10 19:36:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8014 to 5896. [2022-01-10 19:36:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5894 states have (on average 1.497115710892433) internal successors, (8824), 5895 states have internal predecessors, (8824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 8824 transitions. [2022-01-10 19:36:04,937 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 8824 transitions. Word has length 176 [2022-01-10 19:36:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:04,937 INFO L470 AbstractCegarLoop]: Abstraction has 5896 states and 8824 transitions. [2022-01-10 19:36:04,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 8824 transitions. [2022-01-10 19:36:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:04,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:04,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:04,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 19:36:04,939 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash -461347189, now seen corresponding path program 1 times [2022-01-10 19:36:04,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:04,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80474602] [2022-01-10 19:36:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:04,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:05,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:05,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80474602] [2022-01-10 19:36:05,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80474602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:05,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:05,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:36:05,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154554318] [2022-01-10 19:36:05,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:05,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:05,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:05,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:05,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:05,001 INFO L87 Difference]: Start difference. First operand 5896 states and 8824 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:05,261 INFO L93 Difference]: Finished difference Result 9640 states and 13645 transitions. [2022-01-10 19:36:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:05,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:05,270 INFO L225 Difference]: With dead ends: 9640 [2022-01-10 19:36:05,270 INFO L226 Difference]: Without dead ends: 5896 [2022-01-10 19:36:05,273 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 19:36:05,274 INFO L933 BasicCegarLoop]: 6548 mSDtfsCounter, 6409 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6409 SdHoareTripleChecker+Valid, 6548 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 19:36:05,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6409 Valid, 6548 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:05,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2022-01-10 19:36:05,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5896. [2022-01-10 19:36:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5894 states have (on average 1.495758398371225) internal successors, (8816), 5895 states have internal predecessors, (8816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 8816 transitions. [2022-01-10 19:36:05,520 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 8816 transitions. Word has length 176 [2022-01-10 19:36:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:05,520 INFO L470 AbstractCegarLoop]: Abstraction has 5896 states and 8816 transitions. [2022-01-10 19:36:05,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 8816 transitions. [2022-01-10 19:36:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 19:36:05,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:05,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:05,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 19:36:05,522 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1823516266, now seen corresponding path program 1 times [2022-01-10 19:36:05,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:05,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117986084] [2022-01-10 19:36:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:05,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:36:05,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:05,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117986084] [2022-01-10 19:36:05,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117986084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:05,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:05,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:36:05,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685392695] [2022-01-10 19:36:05,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:05,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:05,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:05,582 INFO L87 Difference]: Start difference. First operand 5896 states and 8816 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:06,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:06,213 INFO L93 Difference]: Finished difference Result 13182 states and 18210 transitions. [2022-01-10 19:36:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:06,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 19:36:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:06,226 INFO L225 Difference]: With dead ends: 13182 [2022-01-10 19:36:06,226 INFO L226 Difference]: Without dead ends: 9456 [2022-01-10 19:36:06,250 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 19:36:06,251 INFO L933 BasicCegarLoop]: 6533 mSDtfsCounter, 6338 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 8877 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:36:06,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 8877 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9456 states. [2022-01-10 19:36:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9456 to 9256. [2022-01-10 19:36:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9256 states, 9254 states have (on average 1.4185217203371514) internal successors, (13127), 9255 states have internal predecessors, (13127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9256 states to 9256 states and 13127 transitions. [2022-01-10 19:36:06,725 INFO L78 Accepts]: Start accepts. Automaton has 9256 states and 13127 transitions. Word has length 176 [2022-01-10 19:36:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:06,726 INFO L470 AbstractCegarLoop]: Abstraction has 9256 states and 13127 transitions. [2022-01-10 19:36:06,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 9256 states and 13127 transitions. [2022-01-10 19:36:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 19:36:06,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:06,747 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:06,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 19:36:06,747 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:06,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1850101902, now seen corresponding path program 1 times [2022-01-10 19:36:06,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:06,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168900762] [2022-01-10 19:36:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:06,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:06,862 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 19:36:06,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:06,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168900762] [2022-01-10 19:36:06,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168900762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:06,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:06,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:36:06,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836892208] [2022-01-10 19:36:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:06,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:06,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:06,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:06,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:06,863 INFO L87 Difference]: Start difference. First operand 9256 states and 13127 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:07,831 INFO L93 Difference]: Finished difference Result 23192 states and 31064 transitions. [2022-01-10 19:36:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:07,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-10 19:36:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:07,850 INFO L225 Difference]: With dead ends: 23192 [2022-01-10 19:36:07,850 INFO L226 Difference]: Without dead ends: 16112 [2022-01-10 19:36:07,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:07,857 INFO L933 BasicCegarLoop]: 6530 mSDtfsCounter, 6374 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6374 SdHoareTripleChecker+Valid, 8874 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:36:07,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6374 Valid, 8874 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:36:07,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16112 states. [2022-01-10 19:36:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16112 to 15742. [2022-01-10 19:36:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15742 states, 15740 states have (on average 1.3620711562897077) internal successors, (21439), 15741 states have internal predecessors, (21439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15742 states to 15742 states and 21439 transitions. [2022-01-10 19:36:08,735 INFO L78 Accepts]: Start accepts. Automaton has 15742 states and 21439 transitions. Word has length 286 [2022-01-10 19:36:08,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:08,736 INFO L470 AbstractCegarLoop]: Abstraction has 15742 states and 21439 transitions. [2022-01-10 19:36:08,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 15742 states and 21439 transitions. [2022-01-10 19:36:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 19:36:08,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:08,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:08,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 19:36:08,750 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1092325298, now seen corresponding path program 1 times [2022-01-10 19:36:08,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:08,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863781063] [2022-01-10 19:36:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:08,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:08,829 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 19:36:08,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863781063] [2022-01-10 19:36:08,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863781063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:08,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:08,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:36:08,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281696801] [2022-01-10 19:36:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:08,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:36:08,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:36:08,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:36:08,830 INFO L87 Difference]: Start difference. First operand 15742 states and 21439 transitions. Second operand has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:10,973 INFO L93 Difference]: Finished difference Result 41926 states and 55260 transitions. [2022-01-10 19:36:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:36:10,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-10 19:36:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:11,012 INFO L225 Difference]: With dead ends: 41926 [2022-01-10 19:36:11,013 INFO L226 Difference]: Without dead ends: 28448 [2022-01-10 19:36:11,025 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 19:36:11,025 INFO L933 BasicCegarLoop]: 6489 mSDtfsCounter, 5264 mSDsluCounter, 19057 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 25546 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:36:11,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5264 Valid, 25546 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 19:36:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28448 states. [2022-01-10 19:36:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28448 to 15766. [2022-01-10 19:36:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15766 states, 15764 states have (on average 1.3546054300938848) internal successors, (21354), 15765 states have internal predecessors, (21354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15766 states to 15766 states and 21354 transitions. [2022-01-10 19:36:12,200 INFO L78 Accepts]: Start accepts. Automaton has 15766 states and 21354 transitions. Word has length 286 [2022-01-10 19:36:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:12,201 INFO L470 AbstractCegarLoop]: Abstraction has 15766 states and 21354 transitions. [2022-01-10 19:36:12,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 15766 states and 21354 transitions. [2022-01-10 19:36:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 19:36:12,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:12,207 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:12,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 19:36:12,207 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash 900691188, now seen corresponding path program 1 times [2022-01-10 19:36:12,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:12,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315224807] [2022-01-10 19:36:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:12,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:12,274 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 19:36:12,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:12,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315224807] [2022-01-10 19:36:12,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315224807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:12,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:12,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:36:12,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312976771] [2022-01-10 19:36:12,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:12,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:12,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:12,275 INFO L87 Difference]: Start difference. First operand 15766 states and 21354 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:14,302 INFO L93 Difference]: Finished difference Result 42155 states and 54797 transitions. [2022-01-10 19:36:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:14,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-10 19:36:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:14,341 INFO L225 Difference]: With dead ends: 42155 [2022-01-10 19:36:14,341 INFO L226 Difference]: Without dead ends: 28683 [2022-01-10 19:36:14,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:14,354 INFO L933 BasicCegarLoop]: 8195 mSDtfsCounter, 6065 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6065 SdHoareTripleChecker+Valid, 10750 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:36:14,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6065 Valid, 10750 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28683 states. [2022-01-10 19:36:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28683 to 28681. [2022-01-10 19:36:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28681 states, 28679 states have (on average 1.3102618640817323) internal successors, (37577), 28680 states have internal predecessors, (37577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28681 states to 28681 states and 37577 transitions. [2022-01-10 19:36:16,410 INFO L78 Accepts]: Start accepts. Automaton has 28681 states and 37577 transitions. Word has length 286 [2022-01-10 19:36:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:16,410 INFO L470 AbstractCegarLoop]: Abstraction has 28681 states and 37577 transitions. [2022-01-10 19:36:16,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 28681 states and 37577 transitions. [2022-01-10 19:36:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 19:36:16,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:16,555 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:16,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 19:36:16,555 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:16,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1771512787, now seen corresponding path program 1 times [2022-01-10 19:36:16,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:16,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133238473] [2022-01-10 19:36:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:16,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:16,598 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 19:36:16,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:16,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133238473] [2022-01-10 19:36:16,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133238473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:16,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:16,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:36:16,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104213945] [2022-01-10 19:36:16,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:16,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:16,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:16,600 INFO L87 Difference]: Start difference. First operand 28681 states and 37577 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:18,754 INFO L93 Difference]: Finished difference Result 54901 states and 70786 transitions. [2022-01-10 19:36:18,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:18,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-10 19:36:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:18,794 INFO L225 Difference]: With dead ends: 54901 [2022-01-10 19:36:18,795 INFO L226 Difference]: Without dead ends: 28514 [2022-01-10 19:36:18,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:18,818 INFO L933 BasicCegarLoop]: 6531 mSDtfsCounter, 2569 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 10489 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 19:36:18,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2569 Valid, 10489 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28514 states. [2022-01-10 19:36:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28514 to 28514. [2022-01-10 19:36:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28514 states, 28512 states have (on average 1.310851571268238) internal successors, (37375), 28513 states have internal predecessors, (37375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:20,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28514 states to 28514 states and 37375 transitions. [2022-01-10 19:36:20,913 INFO L78 Accepts]: Start accepts. Automaton has 28514 states and 37375 transitions. Word has length 286 [2022-01-10 19:36:20,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:20,914 INFO L470 AbstractCegarLoop]: Abstraction has 28514 states and 37375 transitions. [2022-01-10 19:36:20,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:20,914 INFO L276 IsEmpty]: Start isEmpty. Operand 28514 states and 37375 transitions. [2022-01-10 19:36:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-10 19:36:20,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:20,924 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:20,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 19:36:20,924 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash 690198726, now seen corresponding path program 1 times [2022-01-10 19:36:20,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:20,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697790163] [2022-01-10 19:36:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:20,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:21,049 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 19:36:21,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:21,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697790163] [2022-01-10 19:36:21,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697790163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:21,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:21,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:36:21,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268641185] [2022-01-10 19:36:21,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:21,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:21,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:21,051 INFO L87 Difference]: Start difference. First operand 28514 states and 37375 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:24,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:24,848 INFO L93 Difference]: Finished difference Result 80472 states and 102968 transitions. [2022-01-10 19:36:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:24,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 287 [2022-01-10 19:36:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:24,926 INFO L225 Difference]: With dead ends: 80472 [2022-01-10 19:36:24,926 INFO L226 Difference]: Without dead ends: 54252 [2022-01-10 19:36:24,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:24,949 INFO L933 BasicCegarLoop]: 7085 mSDtfsCounter, 6338 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 9622 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:36:24,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 9622 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54252 states. [2022-01-10 19:36:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54252 to 52954. [2022-01-10 19:36:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52954 states, 52952 states have (on average 1.2858060129928992) internal successors, (68086), 52953 states have internal predecessors, (68086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52954 states to 52954 states and 68086 transitions. [2022-01-10 19:36:28,912 INFO L78 Accepts]: Start accepts. Automaton has 52954 states and 68086 transitions. Word has length 287 [2022-01-10 19:36:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:28,912 INFO L470 AbstractCegarLoop]: Abstraction has 52954 states and 68086 transitions. [2022-01-10 19:36:28,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 52954 states and 68086 transitions. [2022-01-10 19:36:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-10 19:36:28,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:28,934 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:28,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 19:36:28,934 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1967893725, now seen corresponding path program 1 times [2022-01-10 19:36:28,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:28,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807100047] [2022-01-10 19:36:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:28,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:28,977 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 19:36:28,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:28,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807100047] [2022-01-10 19:36:28,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807100047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:28,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:28,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:36:28,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236829528] [2022-01-10 19:36:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:28,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:28,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:28,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:28,980 INFO L87 Difference]: Start difference. First operand 52954 states and 68086 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:33,201 INFO L93 Difference]: Finished difference Result 103555 states and 131934 transitions. [2022-01-10 19:36:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:33,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 287 [2022-01-10 19:36:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:33,289 INFO L225 Difference]: With dead ends: 103555 [2022-01-10 19:36:33,289 INFO L226 Difference]: Without dead ends: 52788 [2022-01-10 19:36:33,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:33,325 INFO L933 BasicCegarLoop]: 6530 mSDtfsCounter, 2567 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 10488 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 19:36:33,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2567 Valid, 10488 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52788 states.