/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:12:09,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:12:09,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:12:09,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:12:09,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:12:09,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:12:09,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:12:09,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:12:09,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:12:09,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:12:09,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:12:09,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:12:09,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:12:09,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:12:09,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:12:09,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:12:09,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:12:09,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:12:09,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:12:09,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:12:09,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:12:09,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:12:09,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:12:09,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:12:09,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:12:09,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:12:09,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:12:09,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:12:09,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:12:09,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 14:12:09,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:12:09,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:12:09,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:12:09,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 14:12:09,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:12:09,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:12:09,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:12:09,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:12:09,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:12:09,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:12:09,188 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:12:09,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:12:09,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:12:09,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:12:09,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:12:09,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:12:09,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:12:09,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:12:09,189 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:12:09,189 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:12:09,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:12:09,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:12:09,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:12:09,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:12:09,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:12:09,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:12:09,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:12:09,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:12:09,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:12:09,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:12:09,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:12:09,191 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:12:09,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:12:09,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:12:09,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:12:09,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:12:09,192 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:12:09,192 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:12:09,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:12:09,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:12:09,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:12:09,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:12:09,435 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:12:09,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-01-10 14:12:09,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0068d027b/4fe93ac46ec8445b99d77a49e0cee146/FLAG7489a5a56 [2022-01-10 14:12:09,858 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:12:09,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-01-10 14:12:09,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0068d027b/4fe93ac46ec8445b99d77a49e0cee146/FLAG7489a5a56 [2022-01-10 14:12:10,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0068d027b/4fe93ac46ec8445b99d77a49e0cee146 [2022-01-10 14:12:10,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:12:10,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:12:10,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:12:10,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:12:10,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:12:10,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712f7d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10, skipping insertion in model container [2022-01-10 14:12:10,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:12:10,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:12:10,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2022-01-10 14:12:10,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2022-01-10 14:12:10,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:12:10,582 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:12:10,591 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2022-01-10 14:12:10,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2022-01-10 14:12:10,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:12:10,645 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:12:10,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10 WrapperNode [2022-01-10 14:12:10,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:12:10,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:12:10,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:12:10,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:12:10,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,736 INFO L137 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 65, calls inlined = 105, statements flattened = 1375 [2022-01-10 14:12:10,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:12:10,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:12:10,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:12:10,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:12:10,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:12:10,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:12:10,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:12:10,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:12:10,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (1/1) ... [2022-01-10 14:12:10,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:12:10,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:12:10,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 14:12:10,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 14:12:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:12:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:12:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:12:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:12:11,071 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:12:11,073 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:12:12,020 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:12:12,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:12:12,043 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 14:12:12,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:12:12 BoogieIcfgContainer [2022-01-10 14:12:12,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:12:12,048 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:12:12,048 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:12:12,049 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:12:12,052 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:12:12" (1/1) ... [2022-01-10 14:12:12,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:12:12 BasicIcfg [2022-01-10 14:12:12,305 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:12:12,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:12:12,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:12:12,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:12:12,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:12:10" (1/4) ... [2022-01-10 14:12:12,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7007dec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:12:12, skipping insertion in model container [2022-01-10 14:12:12,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:10" (2/4) ... [2022-01-10 14:12:12,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7007dec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:12:12, skipping insertion in model container [2022-01-10 14:12:12,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:12:12" (3/4) ... [2022-01-10 14:12:12,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7007dec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:12:12, skipping insertion in model container [2022-01-10 14:12:12,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:12:12" (4/4) ... [2022-01-10 14:12:12,312 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.cTransformedIcfg [2022-01-10 14:12:12,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:12:12,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 14:12:12,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:12:12,378 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 14:12:12,378 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 14:12:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 543 states, 538 states have (on average 1.546468401486989) internal successors, (832), 542 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:12:12,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:12,416 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] [2022-01-10 14:12:12,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1206637235, now seen corresponding path program 1 times [2022-01-10 14:12:12,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:12,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770880171] [2022-01-10 14:12:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:12,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:12,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:12,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770880171] [2022-01-10 14:12:12,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770880171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:12,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:12,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:12,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442333042] [2022-01-10 14:12:12,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:12,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:12,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:12,756 INFO L87 Difference]: Start difference. First operand has 543 states, 538 states have (on average 1.546468401486989) internal successors, (832), 542 states have internal predecessors, (832), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:12,949 INFO L93 Difference]: Finished difference Result 1101 states and 1683 transitions. [2022-01-10 14:12:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 14:12:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:12,973 INFO L225 Difference]: With dead ends: 1101 [2022-01-10 14:12:12,974 INFO L226 Difference]: Without dead ends: 626 [2022-01-10 14:12:12,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:12,988 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 131 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:12,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1586 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-01-10 14:12:13,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 622. [2022-01-10 14:12:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 618 states have (on average 1.4919093851132685) internal successors, (922), 621 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 922 transitions. [2022-01-10 14:12:13,093 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 922 transitions. Word has length 44 [2022-01-10 14:12:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:13,093 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 922 transitions. [2022-01-10 14:12:13,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 922 transitions. [2022-01-10 14:12:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:12:13,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:13,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:13,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:12:13,100 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:13,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1025617107, now seen corresponding path program 1 times [2022-01-10 14:12:13,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:13,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080266226] [2022-01-10 14:12:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:13,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:13,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:13,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080266226] [2022-01-10 14:12:13,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080266226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:13,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:13,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:13,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806954446] [2022-01-10 14:12:13,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:13,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:13,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:13,183 INFO L87 Difference]: Start difference. First operand 622 states and 922 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:13,257 INFO L93 Difference]: Finished difference Result 906 states and 1326 transitions. [2022-01-10 14:12:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:13,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 14:12:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:13,263 INFO L225 Difference]: With dead ends: 906 [2022-01-10 14:12:13,263 INFO L226 Difference]: Without dead ends: 744 [2022-01-10 14:12:13,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:13,265 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 772 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:13,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 877 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-01-10 14:12:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 734. [2022-01-10 14:12:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 730 states have (on average 1.478082191780822) internal successors, (1079), 733 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1079 transitions. [2022-01-10 14:12:13,294 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1079 transitions. Word has length 44 [2022-01-10 14:12:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:13,295 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1079 transitions. [2022-01-10 14:12:13,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,296 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1079 transitions. [2022-01-10 14:12:13,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:12:13,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:13,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:13,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:12:13,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1960846222, now seen corresponding path program 1 times [2022-01-10 14:12:13,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:13,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022916140] [2022-01-10 14:12:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:13,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:13,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:13,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022916140] [2022-01-10 14:12:13,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022916140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:13,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:13,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:13,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743848318] [2022-01-10 14:12:13,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:13,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:13,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:13,424 INFO L87 Difference]: Start difference. First operand 734 states and 1079 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:13,511 INFO L93 Difference]: Finished difference Result 1145 states and 1656 transitions. [2022-01-10 14:12:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:13,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 14:12:13,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:13,516 INFO L225 Difference]: With dead ends: 1145 [2022-01-10 14:12:13,516 INFO L226 Difference]: Without dead ends: 883 [2022-01-10 14:12:13,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:13,524 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 102 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:13,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1547 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-01-10 14:12:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2022-01-10 14:12:13,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 875 states have (on average 1.457142857142857) internal successors, (1275), 878 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1275 transitions. [2022-01-10 14:12:13,560 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1275 transitions. Word has length 44 [2022-01-10 14:12:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:13,561 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1275 transitions. [2022-01-10 14:12:13,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1275 transitions. [2022-01-10 14:12:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:12:13,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:13,563 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] [2022-01-10 14:12:13,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:12:13,564 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1552021997, now seen corresponding path program 1 times [2022-01-10 14:12:13,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:13,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438399168] [2022-01-10 14:12:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:13,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:13,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:13,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438399168] [2022-01-10 14:12:13,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438399168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:13,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:13,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:13,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7051845] [2022-01-10 14:12:13,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:13,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:13,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:13,639 INFO L87 Difference]: Start difference. First operand 879 states and 1275 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:13,696 INFO L93 Difference]: Finished difference Result 1631 states and 2323 transitions. [2022-01-10 14:12:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:13,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 14:12:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:13,702 INFO L225 Difference]: With dead ends: 1631 [2022-01-10 14:12:13,702 INFO L226 Difference]: Without dead ends: 1267 [2022-01-10 14:12:13,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:13,713 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 751 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:13,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 903 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-10 14:12:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1263. [2022-01-10 14:12:13,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1259 states have (on average 1.4193804606830818) internal successors, (1787), 1262 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1787 transitions. [2022-01-10 14:12:13,757 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1787 transitions. Word has length 44 [2022-01-10 14:12:13,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:13,758 INFO L470 AbstractCegarLoop]: Abstraction has 1263 states and 1787 transitions. [2022-01-10 14:12:13,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1787 transitions. [2022-01-10 14:12:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 14:12:13,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:13,760 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] [2022-01-10 14:12:13,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:12:13,760 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2094367864, now seen corresponding path program 1 times [2022-01-10 14:12:13,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:13,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26573493] [2022-01-10 14:12:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:13,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:13,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:13,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26573493] [2022-01-10 14:12:13,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26573493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:13,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:13,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:13,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905940083] [2022-01-10 14:12:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:13,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:13,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:13,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:13,818 INFO L87 Difference]: Start difference. First operand 1263 states and 1787 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:13,887 INFO L93 Difference]: Finished difference Result 2206 states and 3083 transitions. [2022-01-10 14:12:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 14:12:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:13,893 INFO L225 Difference]: With dead ends: 2206 [2022-01-10 14:12:13,894 INFO L226 Difference]: Without dead ends: 1426 [2022-01-10 14:12:13,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:13,895 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 88 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:13,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1519 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2022-01-10 14:12:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1403. [2022-01-10 14:12:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1399 states have (on average 1.3974267333809864) internal successors, (1955), 1402 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1955 transitions. [2022-01-10 14:12:13,943 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1955 transitions. Word has length 45 [2022-01-10 14:12:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:13,946 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1955 transitions. [2022-01-10 14:12:13,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1955 transitions. [2022-01-10 14:12:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 14:12:13,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:13,952 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] [2022-01-10 14:12:13,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 14:12:13,953 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2123950327, now seen corresponding path program 1 times [2022-01-10 14:12:13,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:13,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602516323] [2022-01-10 14:12:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:13,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:14,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:14,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602516323] [2022-01-10 14:12:14,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602516323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:14,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:14,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:14,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410409892] [2022-01-10 14:12:14,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:14,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:14,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:14,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:14,055 INFO L87 Difference]: Start difference. First operand 1403 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:14,128 INFO L93 Difference]: Finished difference Result 3032 states and 4156 transitions. [2022-01-10 14:12:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:14,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 14:12:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:14,138 INFO L225 Difference]: With dead ends: 3032 [2022-01-10 14:12:14,138 INFO L226 Difference]: Without dead ends: 2122 [2022-01-10 14:12:14,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:14,141 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 737 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:14,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 870 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-01-10 14:12:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2068. [2022-01-10 14:12:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2064 states have (on average 1.369670542635659) internal successors, (2827), 2067 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2827 transitions. [2022-01-10 14:12:14,231 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2827 transitions. Word has length 45 [2022-01-10 14:12:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:14,232 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2827 transitions. [2022-01-10 14:12:14,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2827 transitions. [2022-01-10 14:12:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 14:12:14,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:14,235 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:14,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 14:12:14,235 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:14,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1361471154, now seen corresponding path program 1 times [2022-01-10 14:12:14,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:14,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437945599] [2022-01-10 14:12:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:14,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:12:14,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:14,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437945599] [2022-01-10 14:12:14,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437945599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:14,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:14,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:14,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277206343] [2022-01-10 14:12:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:14,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:14,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:14,320 INFO L87 Difference]: Start difference. First operand 2068 states and 2827 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:14,506 INFO L93 Difference]: Finished difference Result 4779 states and 6485 transitions. [2022-01-10 14:12:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:14,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 14:12:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:14,532 INFO L225 Difference]: With dead ends: 4779 [2022-01-10 14:12:14,533 INFO L226 Difference]: Without dead ends: 3410 [2022-01-10 14:12:14,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:12:14,538 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 390 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:14,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 3224 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:14,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2022-01-10 14:12:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 2116. [2022-01-10 14:12:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2112 states have (on average 1.3527462121212122) internal successors, (2857), 2115 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:14,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2857 transitions. [2022-01-10 14:12:14,688 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2857 transitions. Word has length 52 [2022-01-10 14:12:14,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:14,689 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 2857 transitions. [2022-01-10 14:12:14,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:14,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2857 transitions. [2022-01-10 14:12:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 14:12:14,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:14,690 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:14,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 14:12:14,690 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash -983195887, now seen corresponding path program 1 times [2022-01-10 14:12:14,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:14,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711558054] [2022-01-10 14:12:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:14,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:12:14,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:14,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711558054] [2022-01-10 14:12:14,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711558054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:14,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:14,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:14,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256716688] [2022-01-10 14:12:14,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:14,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:14,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:14,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:14,762 INFO L87 Difference]: Start difference. First operand 2116 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:14,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:14,964 INFO L93 Difference]: Finished difference Result 4479 states and 6014 transitions. [2022-01-10 14:12:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:14,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 14:12:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:14,976 INFO L225 Difference]: With dead ends: 4479 [2022-01-10 14:12:14,977 INFO L226 Difference]: Without dead ends: 2872 [2022-01-10 14:12:14,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:12:14,980 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 351 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:14,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 3236 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:14,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2022-01-10 14:12:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2128. [2022-01-10 14:12:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2124 states have (on average 1.3366290018832392) internal successors, (2839), 2127 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:15,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2839 transitions. [2022-01-10 14:12:15,144 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2839 transitions. Word has length 52 [2022-01-10 14:12:15,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:15,144 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 2839 transitions. [2022-01-10 14:12:15,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:15,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2839 transitions. [2022-01-10 14:12:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 14:12:15,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:15,146 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:15,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 14:12:15,146 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash -971879760, now seen corresponding path program 1 times [2022-01-10 14:12:15,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:15,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7864732] [2022-01-10 14:12:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:15,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:15,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:15,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7864732] [2022-01-10 14:12:15,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7864732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:15,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:15,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:12:15,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356747936] [2022-01-10 14:12:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:15,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:12:15,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:12:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:12:15,249 INFO L87 Difference]: Start difference. First operand 2128 states and 2839 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:15,465 INFO L93 Difference]: Finished difference Result 2478 states and 3291 transitions. [2022-01-10 14:12:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 14:12:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 14:12:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:15,475 INFO L225 Difference]: With dead ends: 2478 [2022-01-10 14:12:15,475 INFO L226 Difference]: Without dead ends: 2476 [2022-01-10 14:12:15,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:15,476 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 1609 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:15,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1609 Valid, 877 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-01-10 14:12:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2126. [2022-01-10 14:12:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2123 states have (on average 1.3320772491756947) internal successors, (2828), 2125 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 2828 transitions. [2022-01-10 14:12:15,634 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 2828 transitions. Word has length 52 [2022-01-10 14:12:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:15,635 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 2828 transitions. [2022-01-10 14:12:15,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 2828 transitions. [2022-01-10 14:12:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 14:12:15,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:15,637 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:15,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 14:12:15,637 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:15,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:15,638 INFO L85 PathProgramCache]: Analyzing trace with hash -63500174, now seen corresponding path program 1 times [2022-01-10 14:12:15,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:15,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783677706] [2022-01-10 14:12:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:15,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:15,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:15,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783677706] [2022-01-10 14:12:15,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783677706] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:12:15,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536861080] [2022-01-10 14:12:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:15,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:12:15,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:12:15,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:12:15,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:12:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:15,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 14:12:15,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:12:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:16,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:12:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:16,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536861080] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:12:16,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:12:16,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 14:12:16,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255226656] [2022-01-10 14:12:16,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:12:16,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 14:12:16,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 14:12:16,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:12:16,554 INFO L87 Difference]: Start difference. First operand 2126 states and 2828 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:17,171 INFO L93 Difference]: Finished difference Result 5619 states and 7414 transitions. [2022-01-10 14:12:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:12:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 14:12:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:17,193 INFO L225 Difference]: With dead ends: 5619 [2022-01-10 14:12:17,193 INFO L226 Difference]: Without dead ends: 5617 [2022-01-10 14:12:17,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:12:17,198 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 2186 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:17,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2186 Valid, 2991 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5617 states. [2022-01-10 14:12:17,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5617 to 3647. [2022-01-10 14:12:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 3644 states have (on average 1.3229967069154775) internal successors, (4821), 3646 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 4821 transitions. [2022-01-10 14:12:17,624 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 4821 transitions. Word has length 53 [2022-01-10 14:12:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 3647 states and 4821 transitions. [2022-01-10 14:12:17,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 4821 transitions. [2022-01-10 14:12:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 14:12:17,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:17,627 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-10 14:12:17,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 14:12:17,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 14:12:17,844 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2027198594, now seen corresponding path program 2 times [2022-01-10 14:12:17,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008468351] [2022-01-10 14:12:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:17,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:17,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:17,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008468351] [2022-01-10 14:12:17,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008468351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:17,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:17,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:17,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833204918] [2022-01-10 14:12:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:17,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:17,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:17,897 INFO L87 Difference]: Start difference. First operand 3647 states and 4821 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:18,179 INFO L93 Difference]: Finished difference Result 5285 states and 6986 transitions. [2022-01-10 14:12:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:18,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 14:12:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:18,189 INFO L225 Difference]: With dead ends: 5285 [2022-01-10 14:12:18,189 INFO L226 Difference]: Without dead ends: 2557 [2022-01-10 14:12:18,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:18,194 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 733 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:18,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 958 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2022-01-10 14:12:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2529. [2022-01-10 14:12:18,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2526 states have (on average 1.3131433095803642) internal successors, (3317), 2528 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 3317 transitions. [2022-01-10 14:12:18,474 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 3317 transitions. Word has length 56 [2022-01-10 14:12:18,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:18,474 INFO L470 AbstractCegarLoop]: Abstraction has 2529 states and 3317 transitions. [2022-01-10 14:12:18,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:18,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 3317 transitions. [2022-01-10 14:12:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 14:12:18,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:18,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:18,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 14:12:18,477 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2044895330, now seen corresponding path program 1 times [2022-01-10 14:12:18,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:18,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425158621] [2022-01-10 14:12:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:18,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:18,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:18,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425158621] [2022-01-10 14:12:18,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425158621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:18,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:18,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:18,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482015700] [2022-01-10 14:12:18,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:18,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:18,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:18,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:18,513 INFO L87 Difference]: Start difference. First operand 2529 states and 3317 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:18,925 INFO L93 Difference]: Finished difference Result 5908 states and 7597 transitions. [2022-01-10 14:12:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:18,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 14:12:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:18,953 INFO L225 Difference]: With dead ends: 5908 [2022-01-10 14:12:18,953 INFO L226 Difference]: Without dead ends: 3095 [2022-01-10 14:12:18,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:18,959 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 87 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:18,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1636 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:18,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-01-10 14:12:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3095. [2022-01-10 14:12:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3092 states have (on average 1.2913971539456663) internal successors, (3993), 3094 states have internal predecessors, (3993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3993 transitions. [2022-01-10 14:12:19,282 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3993 transitions. Word has length 60 [2022-01-10 14:12:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:19,283 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3993 transitions. [2022-01-10 14:12:19,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3993 transitions. [2022-01-10 14:12:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 14:12:19,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:19,289 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:19,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 14:12:19,289 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:19,290 INFO L85 PathProgramCache]: Analyzing trace with hash 130553880, now seen corresponding path program 1 times [2022-01-10 14:12:19,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:19,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278277993] [2022-01-10 14:12:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:19,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:12:19,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:19,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278277993] [2022-01-10 14:12:19,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278277993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:19,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:19,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:19,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041606243] [2022-01-10 14:12:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:19,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:19,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:19,336 INFO L87 Difference]: Start difference. First operand 3095 states and 3993 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:19,656 INFO L93 Difference]: Finished difference Result 5665 states and 7236 transitions. [2022-01-10 14:12:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:19,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 68 [2022-01-10 14:12:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:19,664 INFO L225 Difference]: With dead ends: 5665 [2022-01-10 14:12:19,664 INFO L226 Difference]: Without dead ends: 3095 [2022-01-10 14:12:19,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:19,669 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 723 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:19,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 864 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-01-10 14:12:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3095. [2022-01-10 14:12:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3092 states have (on average 1.2732858990944373) internal successors, (3937), 3094 states have internal predecessors, (3937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3937 transitions. [2022-01-10 14:12:19,979 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3937 transitions. Word has length 68 [2022-01-10 14:12:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:19,980 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3937 transitions. [2022-01-10 14:12:19,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3937 transitions. [2022-01-10 14:12:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 14:12:19,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:19,982 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:19,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 14:12:19,983 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1342031509, now seen corresponding path program 1 times [2022-01-10 14:12:19,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:19,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480996485] [2022-01-10 14:12:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:19,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:12:20,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:20,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480996485] [2022-01-10 14:12:20,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480996485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:20,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:20,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:20,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089625940] [2022-01-10 14:12:20,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:20,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:20,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:20,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:20,024 INFO L87 Difference]: Start difference. First operand 3095 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:20,273 INFO L93 Difference]: Finished difference Result 5159 states and 6527 transitions. [2022-01-10 14:12:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:20,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 69 [2022-01-10 14:12:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:20,279 INFO L225 Difference]: With dead ends: 5159 [2022-01-10 14:12:20,279 INFO L226 Difference]: Without dead ends: 2549 [2022-01-10 14:12:20,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:20,283 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 97 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:20,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1620 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2022-01-10 14:12:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2547. [2022-01-10 14:12:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 2544 states have (on average 1.2727987421383649) internal successors, (3238), 2546 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3238 transitions. [2022-01-10 14:12:20,540 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3238 transitions. Word has length 69 [2022-01-10 14:12:20,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:20,540 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 3238 transitions. [2022-01-10 14:12:20,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3238 transitions. [2022-01-10 14:12:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:20,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:20,542 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] [2022-01-10 14:12:20,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 14:12:20,543 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:20,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:20,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1492012093, now seen corresponding path program 1 times [2022-01-10 14:12:20,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:20,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133466792] [2022-01-10 14:12:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:20,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:20,581 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 14:12:20,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:20,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133466792] [2022-01-10 14:12:20,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133466792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:20,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:20,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:20,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858454169] [2022-01-10 14:12:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:20,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:20,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:20,585 INFO L87 Difference]: Start difference. First operand 2547 states and 3238 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:20,856 INFO L93 Difference]: Finished difference Result 3300 states and 4363 transitions. [2022-01-10 14:12:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:20,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:20,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:20,861 INFO L225 Difference]: With dead ends: 3300 [2022-01-10 14:12:20,861 INFO L226 Difference]: Without dead ends: 2877 [2022-01-10 14:12:20,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:20,864 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 709 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:20,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1309 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2022-01-10 14:12:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2873. [2022-01-10 14:12:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.297212543554007) internal successors, (3723), 2872 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3723 transitions. [2022-01-10 14:12:21,171 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3723 transitions. Word has length 77 [2022-01-10 14:12:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:21,171 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3723 transitions. [2022-01-10 14:12:21,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3723 transitions. [2022-01-10 14:12:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:21,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:21,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:21,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 14:12:21,174 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:21,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1787721501, now seen corresponding path program 1 times [2022-01-10 14:12:21,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:21,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694256654] [2022-01-10 14:12:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:21,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:21,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:21,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694256654] [2022-01-10 14:12:21,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694256654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:21,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:21,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:21,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121421986] [2022-01-10 14:12:21,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:21,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:21,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:21,211 INFO L87 Difference]: Start difference. First operand 2873 states and 3723 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:21,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:21,472 INFO L93 Difference]: Finished difference Result 3621 states and 4841 transitions. [2022-01-10 14:12:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:21,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:21,478 INFO L225 Difference]: With dead ends: 3621 [2022-01-10 14:12:21,478 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:21,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:21,481 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:21,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 766 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:21,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:21,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2944250871080138) internal successors, (3715), 2872 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3715 transitions. [2022-01-10 14:12:21,817 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3715 transitions. Word has length 77 [2022-01-10 14:12:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:21,817 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3715 transitions. [2022-01-10 14:12:21,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3715 transitions. [2022-01-10 14:12:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:21,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:21,819 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] [2022-01-10 14:12:21,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 14:12:21,820 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash -550334525, now seen corresponding path program 1 times [2022-01-10 14:12:21,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:21,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405346031] [2022-01-10 14:12:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:21,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:21,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:21,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405346031] [2022-01-10 14:12:21,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405346031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:21,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:21,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:21,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036319057] [2022-01-10 14:12:21,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:21,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:21,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:21,854 INFO L87 Difference]: Start difference. First operand 2873 states and 3715 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:22,121 INFO L93 Difference]: Finished difference Result 3620 states and 4824 transitions. [2022-01-10 14:12:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:22,127 INFO L225 Difference]: With dead ends: 3620 [2022-01-10 14:12:22,127 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:22,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:22,130 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 753 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:22,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 761 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.291637630662021) internal successors, (3707), 2872 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3707 transitions. [2022-01-10 14:12:22,403 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3707 transitions. Word has length 77 [2022-01-10 14:12:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:22,403 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3707 transitions. [2022-01-10 14:12:22,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3707 transitions. [2022-01-10 14:12:22,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:22,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:22,404 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] [2022-01-10 14:12:22,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 14:12:22,405 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:22,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:22,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1480250141, now seen corresponding path program 1 times [2022-01-10 14:12:22,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:22,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933097652] [2022-01-10 14:12:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:22,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:22,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:22,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933097652] [2022-01-10 14:12:22,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933097652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:22,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:22,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:22,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160777201] [2022-01-10 14:12:22,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:22,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:22,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:22,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:22,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:22,435 INFO L87 Difference]: Start difference. First operand 2873 states and 3707 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:22,664 INFO L93 Difference]: Finished difference Result 3619 states and 4807 transitions. [2022-01-10 14:12:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:22,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:22,670 INFO L225 Difference]: With dead ends: 3619 [2022-01-10 14:12:22,670 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:22,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:22,673 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:22,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 756 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2888501742160279) internal successors, (3699), 2872 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3699 transitions. [2022-01-10 14:12:22,924 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3699 transitions. Word has length 77 [2022-01-10 14:12:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:22,924 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3699 transitions. [2022-01-10 14:12:22,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3699 transitions. [2022-01-10 14:12:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:22,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:22,926 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] [2022-01-10 14:12:22,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 14:12:22,926 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:22,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:22,927 INFO L85 PathProgramCache]: Analyzing trace with hash 567962563, now seen corresponding path program 1 times [2022-01-10 14:12:22,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:22,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169728799] [2022-01-10 14:12:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:22,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:22,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:22,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169728799] [2022-01-10 14:12:22,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169728799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:22,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:22,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:22,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576554266] [2022-01-10 14:12:22,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:22,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:22,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:22,960 INFO L87 Difference]: Start difference. First operand 2873 states and 3699 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:23,186 INFO L93 Difference]: Finished difference Result 3618 states and 4790 transitions. [2022-01-10 14:12:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:23,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:23,192 INFO L225 Difference]: With dead ends: 3618 [2022-01-10 14:12:23,192 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:23,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:23,195 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:23,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 751 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:23,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2860627177700348) internal successors, (3691), 2872 states have internal predecessors, (3691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3691 transitions. [2022-01-10 14:12:23,427 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3691 transitions. Word has length 77 [2022-01-10 14:12:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:23,427 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3691 transitions. [2022-01-10 14:12:23,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3691 transitions. [2022-01-10 14:12:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:23,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:23,429 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] [2022-01-10 14:12:23,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 14:12:23,429 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1028534045, now seen corresponding path program 1 times [2022-01-10 14:12:23,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:23,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891058442] [2022-01-10 14:12:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:23,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:23,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:23,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891058442] [2022-01-10 14:12:23,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891058442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:23,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:23,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:23,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619611318] [2022-01-10 14:12:23,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:23,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:23,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:23,460 INFO L87 Difference]: Start difference. First operand 2873 states and 3691 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:23,770 INFO L93 Difference]: Finished difference Result 3617 states and 4773 transitions. [2022-01-10 14:12:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:23,776 INFO L225 Difference]: With dead ends: 3617 [2022-01-10 14:12:23,776 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:23,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:23,778 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 676 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:23,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 780 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2790940766550523) internal successors, (3671), 2872 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3671 transitions. [2022-01-10 14:12:23,989 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3671 transitions. Word has length 77 [2022-01-10 14:12:23,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:23,989 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3671 transitions. [2022-01-10 14:12:23,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3671 transitions. [2022-01-10 14:12:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:23,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:23,990 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] [2022-01-10 14:12:23,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 14:12:23,991 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:23,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1690912707, now seen corresponding path program 1 times [2022-01-10 14:12:23,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:23,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388808923] [2022-01-10 14:12:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:23,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:24,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:24,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388808923] [2022-01-10 14:12:24,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388808923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:24,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:24,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:24,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20305999] [2022-01-10 14:12:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:24,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:24,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:24,020 INFO L87 Difference]: Start difference. First operand 2873 states and 3671 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:24,296 INFO L93 Difference]: Finished difference Result 3616 states and 4732 transitions. [2022-01-10 14:12:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:24,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:24,302 INFO L225 Difference]: With dead ends: 3616 [2022-01-10 14:12:24,305 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:24,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:24,309 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 664 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:24,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 767 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2721254355400697) internal successors, (3651), 2872 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3651 transitions. [2022-01-10 14:12:24,556 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3651 transitions. Word has length 77 [2022-01-10 14:12:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:24,557 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3651 transitions. [2022-01-10 14:12:24,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3651 transitions. [2022-01-10 14:12:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:24,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:24,559 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] [2022-01-10 14:12:24,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 14:12:24,560 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1416211806, now seen corresponding path program 1 times [2022-01-10 14:12:24,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:24,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810760001] [2022-01-10 14:12:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:24,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:24,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:24,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810760001] [2022-01-10 14:12:24,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810760001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:24,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:24,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:24,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102390453] [2022-01-10 14:12:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:24,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:24,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:24,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:24,593 INFO L87 Difference]: Start difference. First operand 2873 states and 3651 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:24,857 INFO L93 Difference]: Finished difference Result 3615 states and 4691 transitions. [2022-01-10 14:12:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:24,862 INFO L225 Difference]: With dead ends: 3615 [2022-01-10 14:12:24,862 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:24,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:24,865 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 652 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:24,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 754 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2651567944250872) internal successors, (3631), 2872 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3631 transitions. [2022-01-10 14:12:25,102 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3631 transitions. Word has length 77 [2022-01-10 14:12:25,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:25,103 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3631 transitions. [2022-01-10 14:12:25,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:25,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3631 transitions. [2022-01-10 14:12:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:25,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:25,104 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] [2022-01-10 14:12:25,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 14:12:25,105 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1961482881, now seen corresponding path program 1 times [2022-01-10 14:12:25,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727243089] [2022-01-10 14:12:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:25,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:25,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:25,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727243089] [2022-01-10 14:12:25,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727243089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:25,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:25,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:25,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126847191] [2022-01-10 14:12:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:25,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:25,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:25,137 INFO L87 Difference]: Start difference. First operand 2873 states and 3631 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:25,404 INFO L93 Difference]: Finished difference Result 3614 states and 4650 transitions. [2022-01-10 14:12:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:25,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:25,410 INFO L225 Difference]: With dead ends: 3614 [2022-01-10 14:12:25,411 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:25,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:25,413 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 640 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:25,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 741 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2581881533101045) internal successors, (3611), 2872 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3611 transitions. [2022-01-10 14:12:25,681 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3611 transitions. Word has length 77 [2022-01-10 14:12:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:25,683 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3611 transitions. [2022-01-10 14:12:25,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3611 transitions. [2022-01-10 14:12:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:25,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:25,685 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] [2022-01-10 14:12:25,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 14:12:25,685 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:25,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1319572448, now seen corresponding path program 1 times [2022-01-10 14:12:25,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:25,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734524299] [2022-01-10 14:12:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:25,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:25,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:25,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734524299] [2022-01-10 14:12:25,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734524299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:25,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:25,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:25,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430329859] [2022-01-10 14:12:25,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:25,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:25,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:25,716 INFO L87 Difference]: Start difference. First operand 2873 states and 3611 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:25,987 INFO L93 Difference]: Finished difference Result 3613 states and 4609 transitions. [2022-01-10 14:12:25,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:25,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:25,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:25,993 INFO L225 Difference]: With dead ends: 3613 [2022-01-10 14:12:25,993 INFO L226 Difference]: Without dead ends: 2873 [2022-01-10 14:12:25,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:25,996 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 628 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:25,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 728 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-10 14:12:26,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-10 14:12:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.251219512195122) internal successors, (3591), 2872 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:26,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3591 transitions. [2022-01-10 14:12:26,325 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3591 transitions. Word has length 77 [2022-01-10 14:12:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:26,325 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3591 transitions. [2022-01-10 14:12:26,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3591 transitions. [2022-01-10 14:12:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:26,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:26,327 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] [2022-01-10 14:12:26,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 14:12:26,327 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1812929087, now seen corresponding path program 1 times [2022-01-10 14:12:26,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:26,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061950945] [2022-01-10 14:12:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:26,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:26,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:26,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061950945] [2022-01-10 14:12:26,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061950945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:26,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:26,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:26,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214999623] [2022-01-10 14:12:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:26,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:26,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:26,386 INFO L87 Difference]: Start difference. First operand 2873 states and 3591 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:26,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:26,764 INFO L93 Difference]: Finished difference Result 4008 states and 5123 transitions. [2022-01-10 14:12:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:26,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:26,773 INFO L225 Difference]: With dead ends: 4008 [2022-01-10 14:12:26,773 INFO L226 Difference]: Without dead ends: 3275 [2022-01-10 14:12:26,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:12:26,776 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 1556 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:26,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 1966 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2022-01-10 14:12:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2879. [2022-01-10 14:12:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2876 states have (on average 1.2465229485396383) internal successors, (3585), 2878 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:27,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3585 transitions. [2022-01-10 14:12:27,051 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3585 transitions. Word has length 77 [2022-01-10 14:12:27,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:27,051 INFO L470 AbstractCegarLoop]: Abstraction has 2879 states and 3585 transitions. [2022-01-10 14:12:27,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:27,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3585 transitions. [2022-01-10 14:12:27,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:27,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:27,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:27,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 14:12:27,054 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:27,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1348847616, now seen corresponding path program 1 times [2022-01-10 14:12:27,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:27,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274478260] [2022-01-10 14:12:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:27,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:27,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:27,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274478260] [2022-01-10 14:12:27,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274478260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:27,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:27,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:27,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321630131] [2022-01-10 14:12:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:27,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:27,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:27,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:27,104 INFO L87 Difference]: Start difference. First operand 2879 states and 3585 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:27,494 INFO L93 Difference]: Finished difference Result 4124 states and 5238 transitions. [2022-01-10 14:12:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:27,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:27,501 INFO L225 Difference]: With dead ends: 4124 [2022-01-10 14:12:27,501 INFO L226 Difference]: Without dead ends: 3399 [2022-01-10 14:12:27,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:12:27,503 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 1362 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:27,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 1964 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:27,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2022-01-10 14:12:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 2885. [2022-01-10 14:12:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 2882 states have (on average 1.2418459403192228) internal successors, (3579), 2884 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3579 transitions. [2022-01-10 14:12:27,756 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3579 transitions. Word has length 77 [2022-01-10 14:12:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:27,756 INFO L470 AbstractCegarLoop]: Abstraction has 2885 states and 3579 transitions. [2022-01-10 14:12:27,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3579 transitions. [2022-01-10 14:12:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:27,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:27,758 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] [2022-01-10 14:12:27,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 14:12:27,759 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2023436097, now seen corresponding path program 1 times [2022-01-10 14:12:27,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:27,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880862708] [2022-01-10 14:12:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:27,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:27,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:27,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880862708] [2022-01-10 14:12:27,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880862708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:27,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:27,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:27,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258829459] [2022-01-10 14:12:27,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:27,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:27,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:27,801 INFO L87 Difference]: Start difference. First operand 2885 states and 3579 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:28,157 INFO L93 Difference]: Finished difference Result 4191 states and 5288 transitions. [2022-01-10 14:12:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:28,164 INFO L225 Difference]: With dead ends: 4191 [2022-01-10 14:12:28,164 INFO L226 Difference]: Without dead ends: 3467 [2022-01-10 14:12:28,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:12:28,166 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 1259 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:28,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 2340 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2022-01-10 14:12:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 2891. [2022-01-10 14:12:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2888 states have (on average 1.2371883656509695) internal successors, (3573), 2890 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 3573 transitions. [2022-01-10 14:12:28,453 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 3573 transitions. Word has length 77 [2022-01-10 14:12:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:28,453 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 3573 transitions. [2022-01-10 14:12:28,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 3573 transitions. [2022-01-10 14:12:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 14:12:28,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:28,455 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] [2022-01-10 14:12:28,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 14:12:28,456 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:28,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash -160240830, now seen corresponding path program 1 times [2022-01-10 14:12:28,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:28,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163783193] [2022-01-10 14:12:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:28,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:28,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:28,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163783193] [2022-01-10 14:12:28,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163783193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:28,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:28,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:28,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934219062] [2022-01-10 14:12:28,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:28,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:28,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:28,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:28,505 INFO L87 Difference]: Start difference. First operand 2891 states and 3573 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:28,861 INFO L93 Difference]: Finished difference Result 4318 states and 5382 transitions. [2022-01-10 14:12:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:28,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 14:12:28,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:28,867 INFO L225 Difference]: With dead ends: 4318 [2022-01-10 14:12:28,867 INFO L226 Difference]: Without dead ends: 3562 [2022-01-10 14:12:28,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:28,869 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 565 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:28,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1114 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2022-01-10 14:12:29,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3494. [2022-01-10 14:12:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 3491 states have (on average 1.2391864795187626) internal successors, (4326), 3493 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 4326 transitions. [2022-01-10 14:12:29,142 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 4326 transitions. Word has length 77 [2022-01-10 14:12:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:29,142 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 4326 transitions. [2022-01-10 14:12:29,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 4326 transitions. [2022-01-10 14:12:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 14:12:29,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:29,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:29,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 14:12:29,146 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1741392908, now seen corresponding path program 1 times [2022-01-10 14:12:29,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646668017] [2022-01-10 14:12:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:29,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 14:12:29,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:29,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646668017] [2022-01-10 14:12:29,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646668017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:29,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:29,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:29,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658947860] [2022-01-10 14:12:29,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:29,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:29,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:29,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:29,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:29,174 INFO L87 Difference]: Start difference. First operand 3494 states and 4326 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:29,555 INFO L93 Difference]: Finished difference Result 6664 states and 8309 transitions. [2022-01-10 14:12:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 110 [2022-01-10 14:12:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:29,561 INFO L225 Difference]: With dead ends: 6664 [2022-01-10 14:12:29,561 INFO L226 Difference]: Without dead ends: 4809 [2022-01-10 14:12:29,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:29,564 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 650 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:29,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 765 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2022-01-10 14:12:29,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4637. [2022-01-10 14:12:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4637 states, 4634 states have (on average 1.2423392317652135) internal successors, (5757), 4636 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4637 states to 4637 states and 5757 transitions. [2022-01-10 14:12:29,962 INFO L78 Accepts]: Start accepts. Automaton has 4637 states and 5757 transitions. Word has length 110 [2022-01-10 14:12:29,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:29,962 INFO L470 AbstractCegarLoop]: Abstraction has 4637 states and 5757 transitions. [2022-01-10 14:12:29,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4637 states and 5757 transitions. [2022-01-10 14:12:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 14:12:29,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:29,965 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:29,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 14:12:29,966 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash 343008676, now seen corresponding path program 1 times [2022-01-10 14:12:29,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:29,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41175093] [2022-01-10 14:12:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:29,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 14:12:30,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:30,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41175093] [2022-01-10 14:12:30,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41175093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:30,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:30,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:30,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479612894] [2022-01-10 14:12:30,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:30,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:30,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:30,007 INFO L87 Difference]: Start difference. First operand 4637 states and 5757 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:30,470 INFO L93 Difference]: Finished difference Result 7647 states and 9513 transitions. [2022-01-10 14:12:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 14:12:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:30,476 INFO L225 Difference]: With dead ends: 7647 [2022-01-10 14:12:30,476 INFO L226 Difference]: Without dead ends: 4653 [2022-01-10 14:12:30,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:30,480 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 69 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:30,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1208 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2022-01-10 14:12:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4653. [2022-01-10 14:12:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 4650 states have (on average 1.230752688172043) internal successors, (5723), 4652 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 5723 transitions. [2022-01-10 14:12:30,855 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 5723 transitions. Word has length 110 [2022-01-10 14:12:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:30,855 INFO L470 AbstractCegarLoop]: Abstraction has 4653 states and 5723 transitions. [2022-01-10 14:12:30,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 5723 transitions. [2022-01-10 14:12:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 14:12:30,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:30,858 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:30,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 14:12:30,858 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash 102468547, now seen corresponding path program 1 times [2022-01-10 14:12:30,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:30,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958342564] [2022-01-10 14:12:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:30,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 14:12:30,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:30,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958342564] [2022-01-10 14:12:30,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958342564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:30,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:30,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:30,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890320635] [2022-01-10 14:12:30,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:30,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:30,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:30,896 INFO L87 Difference]: Start difference. First operand 4653 states and 5723 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:31,181 INFO L93 Difference]: Finished difference Result 6121 states and 7520 transitions. [2022-01-10 14:12:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:31,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 14:12:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:31,185 INFO L225 Difference]: With dead ends: 6121 [2022-01-10 14:12:31,185 INFO L226 Difference]: Without dead ends: 3011 [2022-01-10 14:12:31,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:31,189 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 624 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:31,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 681 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2022-01-10 14:12:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2912. [2022-01-10 14:12:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2909 states have (on average 1.2179443107597112) internal successors, (3543), 2911 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 3543 transitions. [2022-01-10 14:12:31,448 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 3543 transitions. Word has length 110 [2022-01-10 14:12:31,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:31,449 INFO L470 AbstractCegarLoop]: Abstraction has 2912 states and 3543 transitions. [2022-01-10 14:12:31,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 3543 transitions. [2022-01-10 14:12:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 14:12:31,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:31,451 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] [2022-01-10 14:12:31,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 14:12:31,451 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1649562690, now seen corresponding path program 1 times [2022-01-10 14:12:31,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:31,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319028464] [2022-01-10 14:12:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:31,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:31,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319028464] [2022-01-10 14:12:31,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319028464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:31,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:31,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:31,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786122115] [2022-01-10 14:12:31,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:31,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:31,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:31,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:31,491 INFO L87 Difference]: Start difference. First operand 2912 states and 3543 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:31,950 INFO L93 Difference]: Finished difference Result 5496 states and 6772 transitions. [2022-01-10 14:12:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:31,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 14:12:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:31,954 INFO L225 Difference]: With dead ends: 5496 [2022-01-10 14:12:31,954 INFO L226 Difference]: Without dead ends: 4181 [2022-01-10 14:12:31,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:31,958 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 589 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:31,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1290 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2022-01-10 14:12:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4065. [2022-01-10 14:12:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 4062 states have (on average 1.2200886262924668) internal successors, (4956), 4064 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 4956 transitions. [2022-01-10 14:12:32,288 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 4956 transitions. Word has length 124 [2022-01-10 14:12:32,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:32,288 INFO L470 AbstractCegarLoop]: Abstraction has 4065 states and 4956 transitions. [2022-01-10 14:12:32,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 4956 transitions. [2022-01-10 14:12:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 14:12:32,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:32,291 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] [2022-01-10 14:12:32,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 14:12:32,292 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1195236955, now seen corresponding path program 1 times [2022-01-10 14:12:32,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:32,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124880389] [2022-01-10 14:12:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:32,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:12:32,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:32,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124880389] [2022-01-10 14:12:32,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124880389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:32,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:32,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:32,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954723112] [2022-01-10 14:12:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:32,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:32,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:32,325 INFO L87 Difference]: Start difference. First operand 4065 states and 4956 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:32,643 INFO L93 Difference]: Finished difference Result 6506 states and 7999 transitions. [2022-01-10 14:12:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 14:12:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:32,647 INFO L225 Difference]: With dead ends: 6506 [2022-01-10 14:12:32,647 INFO L226 Difference]: Without dead ends: 4005 [2022-01-10 14:12:32,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:32,650 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 540 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:32,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 784 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2022-01-10 14:12:32,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 4005. [2022-01-10 14:12:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4005 states, 4002 states have (on average 1.2208895552223888) internal successors, (4886), 4004 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 4886 transitions. [2022-01-10 14:12:32,962 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 4886 transitions. Word has length 124 [2022-01-10 14:12:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:32,962 INFO L470 AbstractCegarLoop]: Abstraction has 4005 states and 4886 transitions. [2022-01-10 14:12:32,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 4886 transitions. [2022-01-10 14:12:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 14:12:32,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:32,965 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] [2022-01-10 14:12:32,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 14:12:32,965 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1536813579, now seen corresponding path program 1 times [2022-01-10 14:12:32,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:32,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365080335] [2022-01-10 14:12:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:32,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:33,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:33,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365080335] [2022-01-10 14:12:33,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365080335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:33,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:33,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:33,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441566681] [2022-01-10 14:12:33,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:33,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:33,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:33,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:33,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:33,009 INFO L87 Difference]: Start difference. First operand 4005 states and 4886 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:33,534 INFO L93 Difference]: Finished difference Result 8492 states and 10461 transitions. [2022-01-10 14:12:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:33,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-10 14:12:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:33,541 INFO L225 Difference]: With dead ends: 8492 [2022-01-10 14:12:33,541 INFO L226 Difference]: Without dead ends: 6084 [2022-01-10 14:12:33,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:33,544 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 486 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:33,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1328 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2022-01-10 14:12:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 6080. [2022-01-10 14:12:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 6077 states have (on average 1.2231364159947342) internal successors, (7433), 6079 states have internal predecessors, (7433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 7433 transitions. [2022-01-10 14:12:33,994 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 7433 transitions. Word has length 125 [2022-01-10 14:12:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:33,994 INFO L470 AbstractCegarLoop]: Abstraction has 6080 states and 7433 transitions. [2022-01-10 14:12:33,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 7433 transitions. [2022-01-10 14:12:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 14:12:33,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:33,998 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] [2022-01-10 14:12:33,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 14:12:33,998 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1531907926, now seen corresponding path program 1 times [2022-01-10 14:12:33,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:33,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258934555] [2022-01-10 14:12:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:33,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:12:34,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258934555] [2022-01-10 14:12:34,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258934555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:34,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:34,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:34,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062212388] [2022-01-10 14:12:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:34,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:34,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:34,029 INFO L87 Difference]: Start difference. First operand 6080 states and 7433 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:34,501 INFO L93 Difference]: Finished difference Result 10504 states and 12919 transitions. [2022-01-10 14:12:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:34,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 125 [2022-01-10 14:12:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:34,509 INFO L225 Difference]: With dead ends: 10504 [2022-01-10 14:12:34,509 INFO L226 Difference]: Without dead ends: 6021 [2022-01-10 14:12:34,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:34,515 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 538 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:34,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 783 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6021 states. [2022-01-10 14:12:34,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6021 to 6021. [2022-01-10 14:12:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6021 states, 6018 states have (on average 1.22382851445663) internal successors, (7365), 6020 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6021 states to 6021 states and 7365 transitions. [2022-01-10 14:12:34,983 INFO L78 Accepts]: Start accepts. Automaton has 6021 states and 7365 transitions. Word has length 125 [2022-01-10 14:12:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:34,983 INFO L470 AbstractCegarLoop]: Abstraction has 6021 states and 7365 transitions. [2022-01-10 14:12:34,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6021 states and 7365 transitions. [2022-01-10 14:12:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 14:12:34,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:34,986 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] [2022-01-10 14:12:34,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 14:12:34,987 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1776206345, now seen corresponding path program 1 times [2022-01-10 14:12:34,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:34,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126409772] [2022-01-10 14:12:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:34,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:35,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:35,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126409772] [2022-01-10 14:12:35,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126409772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:35,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:35,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:35,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612822328] [2022-01-10 14:12:35,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:35,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:35,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:35,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:35,031 INFO L87 Difference]: Start difference. First operand 6021 states and 7365 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:35,891 INFO L93 Difference]: Finished difference Result 14235 states and 17530 transitions. [2022-01-10 14:12:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:35,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 14:12:35,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:35,903 INFO L225 Difference]: With dead ends: 14235 [2022-01-10 14:12:35,903 INFO L226 Difference]: Without dead ends: 9811 [2022-01-10 14:12:35,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:35,909 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 491 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:35,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1276 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9811 states. [2022-01-10 14:12:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9811 to 9807. [2022-01-10 14:12:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9807 states, 9804 states have (on average 1.2254181966544269) internal successors, (12014), 9806 states have internal predecessors, (12014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9807 states to 9807 states and 12014 transitions. [2022-01-10 14:12:36,614 INFO L78 Accepts]: Start accepts. Automaton has 9807 states and 12014 transitions. Word has length 126 [2022-01-10 14:12:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:36,614 INFO L470 AbstractCegarLoop]: Abstraction has 9807 states and 12014 transitions. [2022-01-10 14:12:36,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 9807 states and 12014 transitions. [2022-01-10 14:12:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 14:12:36,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:36,617 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] [2022-01-10 14:12:36,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 14:12:36,618 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1292515160, now seen corresponding path program 1 times [2022-01-10 14:12:36,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640364309] [2022-01-10 14:12:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:36,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:12:36,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:36,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640364309] [2022-01-10 14:12:36,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640364309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:36,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:36,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:36,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022866398] [2022-01-10 14:12:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:36,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:36,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,645 INFO L87 Difference]: Start difference. First operand 9807 states and 12014 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:37,375 INFO L93 Difference]: Finished difference Result 17959 states and 22084 transitions. [2022-01-10 14:12:37,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 126 [2022-01-10 14:12:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:37,391 INFO L225 Difference]: With dead ends: 17959 [2022-01-10 14:12:37,391 INFO L226 Difference]: Without dead ends: 9749 [2022-01-10 14:12:37,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:37,402 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 536 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:37,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 782 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9749 states. [2022-01-10 14:12:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9749 to 9749. [2022-01-10 14:12:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9749 states, 9746 states have (on average 1.225938846706341) internal successors, (11948), 9748 states have internal predecessors, (11948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 11948 transitions. [2022-01-10 14:12:38,175 INFO L78 Accepts]: Start accepts. Automaton has 9749 states and 11948 transitions. Word has length 126 [2022-01-10 14:12:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:38,175 INFO L470 AbstractCegarLoop]: Abstraction has 9749 states and 11948 transitions. [2022-01-10 14:12:38,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 9749 states and 11948 transitions. [2022-01-10 14:12:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 14:12:38,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:38,178 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] [2022-01-10 14:12:38,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 14:12:38,179 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1683946948, now seen corresponding path program 1 times [2022-01-10 14:12:38,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:38,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939800446] [2022-01-10 14:12:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:38,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:38,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:38,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939800446] [2022-01-10 14:12:38,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939800446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:38,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:38,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:38,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841338351] [2022-01-10 14:12:38,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:38,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:38,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:38,226 INFO L87 Difference]: Start difference. First operand 9749 states and 11948 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:39,610 INFO L93 Difference]: Finished difference Result 24830 states and 30535 transitions. [2022-01-10 14:12:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:39,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 14:12:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:39,628 INFO L225 Difference]: With dead ends: 24830 [2022-01-10 14:12:39,628 INFO L226 Difference]: Without dead ends: 16678 [2022-01-10 14:12:39,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:39,638 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 588 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:39,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1206 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16678 states. [2022-01-10 14:12:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16678 to 16546. [2022-01-10 14:12:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16546 states, 16543 states have (on average 1.2265610832376233) internal successors, (20291), 16545 states have internal predecessors, (20291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16546 states to 16546 states and 20291 transitions. [2022-01-10 14:12:40,820 INFO L78 Accepts]: Start accepts. Automaton has 16546 states and 20291 transitions. Word has length 127 [2022-01-10 14:12:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:40,820 INFO L470 AbstractCegarLoop]: Abstraction has 16546 states and 20291 transitions. [2022-01-10 14:12:40,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 16546 states and 20291 transitions. [2022-01-10 14:12:40,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 14:12:40,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:40,826 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] [2022-01-10 14:12:40,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 14:12:40,826 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:40,827 INFO L85 PathProgramCache]: Analyzing trace with hash 800596125, now seen corresponding path program 1 times [2022-01-10 14:12:40,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:40,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439656842] [2022-01-10 14:12:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:40,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:12:40,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:40,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439656842] [2022-01-10 14:12:40,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439656842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:40,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:40,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:40,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177733778] [2022-01-10 14:12:40,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:40,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:40,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:40,853 INFO L87 Difference]: Start difference. First operand 16546 states and 20291 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:42,055 INFO L93 Difference]: Finished difference Result 31450 states and 38653 transitions. [2022-01-10 14:12:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:42,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 14:12:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:42,078 INFO L225 Difference]: With dead ends: 31450 [2022-01-10 14:12:42,078 INFO L226 Difference]: Without dead ends: 16489 [2022-01-10 14:12:42,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:42,093 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 534 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:42,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 781 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16489 states. [2022-01-10 14:12:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16489 to 16489. [2022-01-10 14:12:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16489 states, 16486 states have (on average 1.226919810748514) internal successors, (20227), 16488 states have internal predecessors, (20227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16489 states to 16489 states and 20227 transitions. [2022-01-10 14:12:43,427 INFO L78 Accepts]: Start accepts. Automaton has 16489 states and 20227 transitions. Word has length 127 [2022-01-10 14:12:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:43,427 INFO L470 AbstractCegarLoop]: Abstraction has 16489 states and 20227 transitions. [2022-01-10 14:12:43,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 16489 states and 20227 transitions. [2022-01-10 14:12:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 14:12:43,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:43,432 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] [2022-01-10 14:12:43,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 14:12:43,433 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:43,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2145616291, now seen corresponding path program 1 times [2022-01-10 14:12:43,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:43,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264625419] [2022-01-10 14:12:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:43,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:43,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:43,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264625419] [2022-01-10 14:12:43,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264625419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:43,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:43,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:43,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932458181] [2022-01-10 14:12:43,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:43,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:43,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:43,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:43,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,478 INFO L87 Difference]: Start difference. First operand 16489 states and 20227 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:45,747 INFO L93 Difference]: Finished difference Result 44634 states and 54720 transitions. [2022-01-10 14:12:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:45,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-10 14:12:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:45,779 INFO L225 Difference]: With dead ends: 44634 [2022-01-10 14:12:45,779 INFO L226 Difference]: Without dead ends: 23165 [2022-01-10 14:12:45,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:45,797 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 454 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:45,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 1756 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23165 states. [2022-01-10 14:12:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23165 to 23165. [2022-01-10 14:12:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23165 states, 23162 states have (on average 1.2213107676366461) internal successors, (28288), 23164 states have internal predecessors, (28288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23165 states to 23165 states and 28288 transitions. [2022-01-10 14:12:47,601 INFO L78 Accepts]: Start accepts. Automaton has 23165 states and 28288 transitions. Word has length 128 [2022-01-10 14:12:47,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:47,602 INFO L470 AbstractCegarLoop]: Abstraction has 23165 states and 28288 transitions. [2022-01-10 14:12:47,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,602 INFO L276 IsEmpty]: Start isEmpty. Operand 23165 states and 28288 transitions. [2022-01-10 14:12:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 14:12:47,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:47,611 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:47,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 14:12:47,611 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash 589945737, now seen corresponding path program 1 times [2022-01-10 14:12:47,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:47,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860690974] [2022-01-10 14:12:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:47,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 14:12:47,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:47,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860690974] [2022-01-10 14:12:47,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860690974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:47,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:47,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:47,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131642408] [2022-01-10 14:12:47,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:47,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:47,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:47,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:47,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,652 INFO L87 Difference]: Start difference. First operand 23165 states and 28288 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:49,438 INFO L93 Difference]: Finished difference Result 24548 states and 29935 transitions. [2022-01-10 14:12:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:49,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-10 14:12:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:49,464 INFO L225 Difference]: With dead ends: 24548 [2022-01-10 14:12:49,464 INFO L226 Difference]: Without dead ends: 23134 [2022-01-10 14:12:49,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:49,471 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 69 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:49,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1327 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23134 states. [2022-01-10 14:12:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23134 to 23131. [2022-01-10 14:12:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23131 states, 23128 states have (on average 1.219906606710481) internal successors, (28214), 23130 states have internal predecessors, (28214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23131 states to 23131 states and 28214 transitions. [2022-01-10 14:12:51,167 INFO L78 Accepts]: Start accepts. Automaton has 23131 states and 28214 transitions. Word has length 162 [2022-01-10 14:12:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:51,167 INFO L470 AbstractCegarLoop]: Abstraction has 23131 states and 28214 transitions. [2022-01-10 14:12:51,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 23131 states and 28214 transitions. [2022-01-10 14:12:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 14:12:51,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:51,178 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:51,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-10 14:12:51,178 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1579217377, now seen corresponding path program 1 times [2022-01-10 14:12:51,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:51,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830168543] [2022-01-10 14:12:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:51,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-01-10 14:12:51,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:51,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830168543] [2022-01-10 14:12:51,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830168543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:51,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:51,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:51,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422919505] [2022-01-10 14:12:51,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:51,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:51,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:51,228 INFO L87 Difference]: Start difference. First operand 23131 states and 28214 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:52,844 INFO L93 Difference]: Finished difference Result 24198 states and 29437 transitions. [2022-01-10 14:12:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:52,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 164 [2022-01-10 14:12:52,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:52,872 INFO L225 Difference]: With dead ends: 24198 [2022-01-10 14:12:52,872 INFO L226 Difference]: Without dead ends: 22367 [2022-01-10 14:12:52,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:52,880 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 6 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:52,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1325 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22367 states. [2022-01-10 14:12:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22367 to 22359. [2022-01-10 14:12:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22359 states, 22356 states have (on average 1.2204777241009126) internal successors, (27285), 22358 states have internal predecessors, (27285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22359 states to 22359 states and 27285 transitions. [2022-01-10 14:12:54,504 INFO L78 Accepts]: Start accepts. Automaton has 22359 states and 27285 transitions. Word has length 164 [2022-01-10 14:12:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:54,504 INFO L470 AbstractCegarLoop]: Abstraction has 22359 states and 27285 transitions. [2022-01-10 14:12:54,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:54,504 INFO L276 IsEmpty]: Start isEmpty. Operand 22359 states and 27285 transitions. [2022-01-10 14:12:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 14:12:54,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:54,514 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:54,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-10 14:12:54,514 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:54,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1584963294, now seen corresponding path program 1 times [2022-01-10 14:12:54,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:54,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356700574] [2022-01-10 14:12:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:54,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 14:12:54,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:54,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356700574] [2022-01-10 14:12:54,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356700574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:54,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:54,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:54,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101070886] [2022-01-10 14:12:54,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:54,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:54,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:54,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:54,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:54,553 INFO L87 Difference]: Start difference. First operand 22359 states and 27285 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:56,093 INFO L93 Difference]: Finished difference Result 22362 states and 27288 transitions. [2022-01-10 14:12:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:56,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 164 [2022-01-10 14:12:56,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:56,118 INFO L225 Difference]: With dead ends: 22362 [2022-01-10 14:12:56,118 INFO L226 Difference]: Without dead ends: 21635 [2022-01-10 14:12:56,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:56,124 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 541 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:56,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21635 states. [2022-01-10 14:12:57,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21635 to 21635. [2022-01-10 14:12:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21635 states, 21633 states have (on average 1.2242869689825728) internal successors, (26485), 21634 states have internal predecessors, (26485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21635 states to 21635 states and 26485 transitions. [2022-01-10 14:12:57,732 INFO L78 Accepts]: Start accepts. Automaton has 21635 states and 26485 transitions. Word has length 164 [2022-01-10 14:12:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:57,732 INFO L470 AbstractCegarLoop]: Abstraction has 21635 states and 26485 transitions. [2022-01-10 14:12:57,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 21635 states and 26485 transitions. [2022-01-10 14:12:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 14:12:57,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:57,741 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] [2022-01-10 14:12:57,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-10 14:12:57,742 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:12:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1901301188, now seen corresponding path program 1 times [2022-01-10 14:12:57,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:57,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203671471] [2022-01-10 14:12:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:57,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:57,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:57,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203671471] [2022-01-10 14:12:57,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203671471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:57,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:57,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:57,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866111392] [2022-01-10 14:12:57,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:57,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:57,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:57,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:57,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:57,787 INFO L87 Difference]: Start difference. First operand 21635 states and 26485 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:59,922 INFO L93 Difference]: Finished difference Result 49799 states and 60858 transitions. [2022-01-10 14:12:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:59,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-10 14:12:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:59,962 INFO L225 Difference]: With dead ends: 49799 [2022-01-10 14:12:59,962 INFO L226 Difference]: Without dead ends: 28214 [2022-01-10 14:12:59,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:59,989 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 337 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:59,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 982 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:13:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28214 states. [2022-01-10 14:13:02,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28214 to 28118. [2022-01-10 14:13:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28118 states, 28116 states have (on average 1.2159268743775786) internal successors, (34187), 28117 states have internal predecessors, (34187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28118 states to 28118 states and 34187 transitions. [2022-01-10 14:13:02,322 INFO L78 Accepts]: Start accepts. Automaton has 28118 states and 34187 transitions. Word has length 165 [2022-01-10 14:13:02,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:13:02,323 INFO L470 AbstractCegarLoop]: Abstraction has 28118 states and 34187 transitions. [2022-01-10 14:13:02,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand 28118 states and 34187 transitions. [2022-01-10 14:13:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 14:13:02,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:13:02,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:13:02,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-10 14:13:02,332 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:13:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:13:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1399607241, now seen corresponding path program 1 times [2022-01-10 14:13:02,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:13:02,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136359514] [2022-01-10 14:13:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:13:02,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:13:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:13:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 14:13:02,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:13:02,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136359514] [2022-01-10 14:13:02,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136359514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:13:02,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:13:02,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:13:02,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311382589] [2022-01-10 14:13:02,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:13:02,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:13:02,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:13:02,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:13:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:02,375 INFO L87 Difference]: Start difference. First operand 28118 states and 34187 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:13:04,580 INFO L93 Difference]: Finished difference Result 55720 states and 67631 transitions. [2022-01-10 14:13:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:13:04,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 184 [2022-01-10 14:13:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:13:04,613 INFO L225 Difference]: With dead ends: 55720 [2022-01-10 14:13:04,613 INFO L226 Difference]: Without dead ends: 27668 [2022-01-10 14:13:04,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:04,632 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 378 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:13:04,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 1007 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:13:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27668 states. [2022-01-10 14:13:06,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27668 to 27668. [2022-01-10 14:13:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27668 states, 27666 states have (on average 1.1998481891129906) internal successors, (33195), 27667 states have internal predecessors, (33195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27668 states to 27668 states and 33195 transitions. [2022-01-10 14:13:06,827 INFO L78 Accepts]: Start accepts. Automaton has 27668 states and 33195 transitions. Word has length 184 [2022-01-10 14:13:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:13:06,827 INFO L470 AbstractCegarLoop]: Abstraction has 27668 states and 33195 transitions. [2022-01-10 14:13:06,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 27668 states and 33195 transitions. [2022-01-10 14:13:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 14:13:06,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:13:06,838 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:13:06,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-10 14:13:06,838 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:13:06,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:13:06,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1038116484, now seen corresponding path program 1 times [2022-01-10 14:13:06,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:13:06,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419240290] [2022-01-10 14:13:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:13:06,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:13:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:13:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:13:06,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:13:06,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419240290] [2022-01-10 14:13:06,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419240290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:13:06,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:13:06,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:13:06,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714255257] [2022-01-10 14:13:06,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:13:06,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:13:06,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:13:06,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:13:06,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:06,893 INFO L87 Difference]: Start difference. First operand 27668 states and 33195 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)