/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:32:17,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:32:17,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:32:17,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:32:17,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:32:17,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:32:17,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:32:17,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:32:17,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:32:17,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:32:17,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:32:17,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:32:17,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:32:17,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:32:17,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:32:17,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:32:17,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:32:17,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:32:17,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:32:17,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:32:17,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:32:17,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:32:17,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:32:17,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:32:17,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:32:17,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:32:17,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:32:17,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:32:17,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:32:17,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:32:17,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:32:17,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:32:17,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:32:17,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:32:17,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:32:17,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:32:17,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:32:17,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:32:17,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:32:17,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:32:17,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:32:17,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:32:17,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:32:17,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:32:17,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:32:17,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:32:17,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:32:17,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:32:17,219 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:32:17,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:32:17,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:32:17,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:32:17,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:32:17,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:32:17,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:32:17,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:32:17,221 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:32:17,221 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:32:17,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:32:17,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:32:17,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:17,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:32:17,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:32:17,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:32:17,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:32:17,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:32:17,224 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:32:17,224 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:32:17,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:32:17,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:32:17,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:32:17,442 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:32:17,442 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:32:17,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-11 06:32:17,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef973dd2/5ee73f5a782944e69ab2d5b9d207f376/FLAGc2a051b64 [2022-01-11 06:32:17,913 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:32:17,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-11 06:32:17,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef973dd2/5ee73f5a782944e69ab2d5b9d207f376/FLAGc2a051b64 [2022-01-11 06:32:18,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef973dd2/5ee73f5a782944e69ab2d5b9d207f376 [2022-01-11 06:32:18,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:32:18,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:32:18,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:18,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:32:18,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:32:18,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:18" (1/1) ... [2022-01-11 06:32:18,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41def9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:18, skipping insertion in model container [2022-01-11 06:32:18,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:18" (1/1) ... [2022-01-11 06:32:18,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:32:18,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:32:18,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9988,10001] [2022-01-11 06:32:18,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24517,24530] [2022-01-11 06:32:18,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:18,785 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:32:18,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9988,10001] [2022-01-11 06:32:18,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24517,24530] [2022-01-11 06:32:19,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:19,053 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:32:19,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19 WrapperNode [2022-01-11 06:32:19,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:19,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:19,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:32:19,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:32:19,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,176 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3366 [2022-01-11 06:32:19,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:19,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:32:19,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:32:19,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:32:19,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:32:19,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:32:19,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:32:19,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:32:19,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (1/1) ... [2022-01-11 06:32:19,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:19,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:32:19,297 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) [2022-01-11 06:32:19,314 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 [2022-01-11 06:32:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:32:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:32:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:32:19,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:32:19,497 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:32:19,498 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:32:20,966 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:32:20,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:32:20,979 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:32:20,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:20 BoogieIcfgContainer [2022-01-11 06:32:20,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:32:20,982 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:32:20,982 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:32:20,983 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:32:20,985 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:20" (1/1) ... [2022-01-11 06:32:22,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:22 BasicIcfg [2022-01-11 06:32:22,020 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:32:22,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:32:22,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:32:22,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:32:22,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:32:18" (1/4) ... [2022-01-11 06:32:22,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0b8d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:22, skipping insertion in model container [2022-01-11 06:32:22,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:19" (2/4) ... [2022-01-11 06:32:22,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0b8d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:22, skipping insertion in model container [2022-01-11 06:32:22,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:20" (3/4) ... [2022-01-11 06:32:22,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0b8d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:32:22, skipping insertion in model container [2022-01-11 06:32:22,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:22" (4/4) ... [2022-01-11 06:32:22,027 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.cTransformedIcfg [2022-01-11 06:32:22,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:32:22,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 06:32:22,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:32:22,088 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 [2022-01-11 06:32:22,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 06:32:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 702 states, 699 states have (on average 1.7854077253218885) internal successors, (1248), 701 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 06:32:22,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:22,129 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] [2022-01-11 06:32:22,129 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:22,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:22,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1056801742, now seen corresponding path program 1 times [2022-01-11 06:32:22,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:22,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220158229] [2022-01-11 06:32:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:22,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:22,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:22,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220158229] [2022-01-11 06:32:22,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220158229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:22,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:22,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:22,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303643937] [2022-01-11 06:32:22,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:22,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:22,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:22,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:22,582 INFO L87 Difference]: Start difference. First operand has 702 states, 699 states have (on average 1.7854077253218885) internal successors, (1248), 701 states have internal predecessors, (1248), 0 states have call successors, (0), 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 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:22,704 INFO L93 Difference]: Finished difference Result 1063 states and 1849 transitions. [2022-01-11 06:32:22,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:22,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-11 06:32:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:22,723 INFO L225 Difference]: With dead ends: 1063 [2022-01-11 06:32:22,723 INFO L226 Difference]: Without dead ends: 842 [2022-01-11 06:32:22,728 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 [2022-01-11 06:32:22,731 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 630 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:22,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2071 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-01-11 06:32:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-01-11 06:32:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.3723150357995226) internal successors, (1150), 839 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1150 transitions. [2022-01-11 06:32:22,796 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1150 transitions. Word has length 62 [2022-01-11 06:32:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:22,797 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1150 transitions. [2022-01-11 06:32:22,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1150 transitions. [2022-01-11 06:32:22,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:32:22,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:22,799 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] [2022-01-11 06:32:22,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:32:22,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:22,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:22,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1099506682, now seen corresponding path program 1 times [2022-01-11 06:32:22,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:22,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569099669] [2022-01-11 06:32:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:22,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:23,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:23,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569099669] [2022-01-11 06:32:23,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569099669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:23,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:23,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:23,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569036956] [2022-01-11 06:32:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:23,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:23,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:23,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:23,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:23,015 INFO L87 Difference]: Start difference. First operand 840 states and 1150 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:23,145 INFO L93 Difference]: Finished difference Result 1461 states and 2022 transitions. [2022-01-11 06:32:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 06:32:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:23,149 INFO L225 Difference]: With dead ends: 1461 [2022-01-11 06:32:23,149 INFO L226 Difference]: Without dead ends: 1221 [2022-01-11 06:32:23,153 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 [2022-01-11 06:32:23,153 INFO L933 BasicCegarLoop]: 1034 mSDtfsCounter, 548 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:23,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 1679 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:32:23,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-01-11 06:32:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1217. [2022-01-11 06:32:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1215 states have (on average 1.359670781893004) internal successors, (1652), 1216 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1652 transitions. [2022-01-11 06:32:23,193 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1652 transitions. Word has length 63 [2022-01-11 06:32:23,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:23,194 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 1652 transitions. [2022-01-11 06:32:23,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1652 transitions. [2022-01-11 06:32:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:32:23,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:23,201 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] [2022-01-11 06:32:23,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:32:23,205 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:23,206 INFO L85 PathProgramCache]: Analyzing trace with hash -558770116, now seen corresponding path program 1 times [2022-01-11 06:32:23,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:23,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762235025] [2022-01-11 06:32:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:23,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:23,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:23,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762235025] [2022-01-11 06:32:23,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762235025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:23,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:23,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:32:23,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038971443] [2022-01-11 06:32:23,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:23,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:32:23,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:23,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:32:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:32:23,635 INFO L87 Difference]: Start difference. First operand 1217 states and 1652 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:27,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:31,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:35,234 INFO L93 Difference]: Finished difference Result 5598 states and 8110 transitions. [2022-01-11 06:32:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 06:32:35,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 06:32:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:35,252 INFO L225 Difference]: With dead ends: 5598 [2022-01-11 06:32:35,252 INFO L226 Difference]: Without dead ends: 4517 [2022-01-11 06:32:35,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-11 06:32:35,255 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 4666 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 39 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:35,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4666 Valid, 2018 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1226 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2022-01-11 06:32:35,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2022-01-11 06:32:35,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 2945. [2022-01-11 06:32:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2943 states have (on average 1.416241930003398) internal successors, (4168), 2944 states have internal predecessors, (4168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:35,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 4168 transitions. [2022-01-11 06:32:35,672 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 4168 transitions. Word has length 63 [2022-01-11 06:32:35,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:35,672 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 4168 transitions. [2022-01-11 06:32:35,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:35,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 4168 transitions. [2022-01-11 06:32:35,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:32:35,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:35,676 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] [2022-01-11 06:32:35,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:32:35,676 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash -858550174, now seen corresponding path program 1 times [2022-01-11 06:32:35,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:35,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45265111] [2022-01-11 06:32:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:35,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:35,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:35,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45265111] [2022-01-11 06:32:35,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45265111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:35,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:35,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:35,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223208465] [2022-01-11 06:32:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:35,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:35,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:35,855 INFO L87 Difference]: Start difference. First operand 2945 states and 4168 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:36,578 INFO L93 Difference]: Finished difference Result 6869 states and 9872 transitions. [2022-01-11 06:32:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:36,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 06:32:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:36,590 INFO L225 Difference]: With dead ends: 6869 [2022-01-11 06:32:36,590 INFO L226 Difference]: Without dead ends: 4734 [2022-01-11 06:32:36,596 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 [2022-01-11 06:32:36,601 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 491 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:36,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1474 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:36,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-01-11 06:32:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4700. [2022-01-11 06:32:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4700 states, 4698 states have (on average 1.417624521072797) internal successors, (6660), 4699 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 6660 transitions. [2022-01-11 06:32:37,268 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 6660 transitions. Word has length 63 [2022-01-11 06:32:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:37,269 INFO L470 AbstractCegarLoop]: Abstraction has 4700 states and 6660 transitions. [2022-01-11 06:32:37,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 6660 transitions. [2022-01-11 06:32:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:32:37,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:37,274 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] [2022-01-11 06:32:37,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:32:37,275 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:37,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1858913458, now seen corresponding path program 1 times [2022-01-11 06:32:37,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:37,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065154291] [2022-01-11 06:32:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:37,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:37,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:37,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065154291] [2022-01-11 06:32:37,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065154291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:37,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:37,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:32:37,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303576475] [2022-01-11 06:32:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:37,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:32:37,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:32:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:32:37,744 INFO L87 Difference]: Start difference. First operand 4700 states and 6660 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:32:41,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:46,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:48,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:54,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:57,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:59,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:03,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:03,322 INFO L93 Difference]: Finished difference Result 21684 states and 31783 transitions. [2022-01-11 06:33:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:33:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-11 06:33:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:03,389 INFO L225 Difference]: With dead ends: 21684 [2022-01-11 06:33:03,392 INFO L226 Difference]: Without dead ends: 18587 [2022-01-11 06:33:03,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-11 06:33:03,401 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 6228 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 23 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6228 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:03,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6228 Valid, 2491 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1046 Invalid, 7 Unknown, 0 Unchecked, 20.2s Time] [2022-01-11 06:33:03,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18587 states. [2022-01-11 06:33:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18587 to 8184. [2022-01-11 06:33:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8184 states, 8182 states have (on average 1.4337570276216085) internal successors, (11731), 8183 states have internal predecessors, (11731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 11731 transitions. [2022-01-11 06:33:05,595 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 11731 transitions. Word has length 64 [2022-01-11 06:33:05,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:05,595 INFO L470 AbstractCegarLoop]: Abstraction has 8184 states and 11731 transitions. [2022-01-11 06:33:05,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 11731 transitions. [2022-01-11 06:33:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:33:05,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:05,600 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] [2022-01-11 06:33:05,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:33:05,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:05,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash 78730043, now seen corresponding path program 1 times [2022-01-11 06:33:05,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:05,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270799345] [2022-01-11 06:33:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:05,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:05,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:05,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270799345] [2022-01-11 06:33:05,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270799345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:05,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:05,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:33:05,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397599956] [2022-01-11 06:33:05,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:05,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:33:05,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:33:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:33:05,877 INFO L87 Difference]: Start difference. First operand 8184 states and 11731 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:09,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:12,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:22,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:33:24,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []