/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:26:54,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:26:54,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:26:54,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:26:54,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:26:54,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:26:54,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:26:54,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:26:54,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:26:54,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:26:54,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:26:54,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:26:54,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:26:54,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:26:54,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:26:54,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:26:54,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:26:54,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:26:54,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:26:54,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:26:54,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:26:54,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:26:54,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:26:54,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:26:54,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:26:54,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:26:54,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:26:54,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:26:54,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:26:54,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:26:54,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:26:54,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:26:54,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:26:54,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:26:54,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:26:54,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:26:54,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:26:54,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:26:54,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:26:54,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:26:54,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:26:54,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:26:54,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:26:54,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:26:54,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:26:54,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:26:54,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:26:54,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:26:54,265 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:26:54,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:26:54,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:26:54,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:26:54,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:26:54,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:26:54,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:26:54,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:26:54,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:26:54,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:26:54,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:26:54,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:26:54,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:26:54,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:26:54,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:26:54,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:26:54,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:26:54,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:26:54,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:26:54,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:26:54,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:26:54,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:26:54,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:26:54,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:26:54,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:26:54,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:26:54,268 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:26:54,269 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:26:54,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:26:54,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:26:54,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:26:54,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:26:54,457 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:26:54,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2022-01-10 14:26:54,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af81a865f/f3e7a128516d433d8d74dbf83425f314/FLAGd969156dd [2022-01-10 14:26:54,929 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:26:54,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2022-01-10 14:26:54,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af81a865f/f3e7a128516d433d8d74dbf83425f314/FLAGd969156dd [2022-01-10 14:26:54,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af81a865f/f3e7a128516d433d8d74dbf83425f314 [2022-01-10 14:26:54,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:26:54,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:26:54,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:26:54,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:26:54,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:26:54,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:26:54" (1/1) ... [2022-01-10 14:26:54,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b082d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:54, skipping insertion in model container [2022-01-10 14:26:54,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:26:54" (1/1) ... [2022-01-10 14:26:54,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:26:55,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:26:55,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2022-01-10 14:26:55,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:26:55,370 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:26:55,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2022-01-10 14:26:55,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:26:55,482 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:26:55,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55 WrapperNode [2022-01-10 14:26:55,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:26:55,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:26:55,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:26:55,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:26:55,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,529 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 637 [2022-01-10 14:26:55,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:26:55,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:26:55,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:26:55,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:26:55,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:26:55,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:26:55,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:26:55,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:26:55,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (1/1) ... [2022-01-10 14:26:55,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:26:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:26:55,585 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 14:26:55,601 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 14:26:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:26:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:26:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:26:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:26:55,684 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:26:55,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:26:56,313 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:26:56,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:26:56,320 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 14:26:56,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:26:56 BoogieIcfgContainer [2022-01-10 14:26:56,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:26:56,322 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:26:56,322 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:26:56,323 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:26:56,325 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:26:56" (1/1) ... [2022-01-10 14:26:56,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:26:56 BasicIcfg [2022-01-10 14:26:56,505 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:26:56,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:26:56,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:26:56,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:26:56,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:26:54" (1/4) ... [2022-01-10 14:26:56,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c41cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:26:56, skipping insertion in model container [2022-01-10 14:26:56,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:55" (2/4) ... [2022-01-10 14:26:56,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c41cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:26:56, skipping insertion in model container [2022-01-10 14:26:56,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:26:56" (3/4) ... [2022-01-10 14:26:56,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c41cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:26:56, skipping insertion in model container [2022-01-10 14:26:56,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:26:56" (4/4) ... [2022-01-10 14:26:56,517 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.cTransformedIcfg [2022-01-10 14:26:56,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:26:56,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 14:26:56,555 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:26:56,560 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 14:26:56,560 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 14:26:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 142 states have (on average 1.971830985915493) internal successors, (280), 143 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:26:56,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:56,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:56,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:26:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:56,589 INFO L85 PathProgramCache]: Analyzing trace with hash 377290835, now seen corresponding path program 1 times [2022-01-10 14:26:56,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:56,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092483437] [2022-01-10 14:26:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:56,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:57,413 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 14:26:57,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:57,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092483437] [2022-01-10 14:26:57,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092483437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:26:57,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:26:57,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:26:57,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370143938] [2022-01-10 14:26:57,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:26:57,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:26:57,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:57,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:26:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:26:57,454 INFO L87 Difference]: Start difference. First operand has 144 states, 142 states have (on average 1.971830985915493) internal successors, (280), 143 states have internal predecessors, (280), 0 states have call successors, (0), 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 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:59,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:59,078 INFO L93 Difference]: Finished difference Result 284 states and 554 transitions. [2022-01-10 14:26:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:26:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:26:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:59,092 INFO L225 Difference]: With dead ends: 284 [2022-01-10 14:26:59,092 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:26:59,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-10 14:26:59,099 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:59,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 289 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 14:26:59,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:26:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:26:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.457142857142857) internal successors, (204), 140 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 204 transitions. [2022-01-10 14:26:59,145 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 204 transitions. Word has length 139 [2022-01-10 14:26:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:59,146 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 204 transitions. [2022-01-10 14:26:59,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 204 transitions. [2022-01-10 14:26:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:26:59,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:59,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:59,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:26:59,149 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:26:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash 669676660, now seen corresponding path program 1 times [2022-01-10 14:26:59,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:59,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843160663] [2022-01-10 14:26:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:59,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:59,496 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 14:26:59,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:59,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843160663] [2022-01-10 14:26:59,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843160663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:26:59,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:26:59,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 14:26:59,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389075232] [2022-01-10 14:26:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:26:59,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 14:26:59,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:59,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 14:26:59,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:26:59,500 INFO L87 Difference]: Start difference. First operand 141 states and 204 transitions. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:01,246 INFO L93 Difference]: Finished difference Result 268 states and 393 transitions. [2022-01-10 14:27:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 14:27:01,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:01,248 INFO L225 Difference]: With dead ends: 268 [2022-01-10 14:27:01,248 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:01,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-10 14:27:01,250 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:01,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 209 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 14:27:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4285714285714286) internal successors, (200), 140 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 200 transitions. [2022-01-10 14:27:01,266 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 200 transitions. Word has length 139 [2022-01-10 14:27:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:01,266 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 200 transitions. [2022-01-10 14:27:01,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 200 transitions. [2022-01-10 14:27:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:01,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:01,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:01,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:27:01,279 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:01,279 INFO L85 PathProgramCache]: Analyzing trace with hash -931489387, now seen corresponding path program 1 times [2022-01-10 14:27:01,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:01,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375838232] [2022-01-10 14:27:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:01,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:01,715 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 14:27:01,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:01,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375838232] [2022-01-10 14:27:01,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375838232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:01,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:01,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-10 14:27:01,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182409120] [2022-01-10 14:27:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:01,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 14:27:01,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 14:27:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-01-10 14:27:01,718 INFO L87 Difference]: Start difference. First operand 141 states and 200 transitions. Second operand has 16 states, 16 states have (on average 8.6875) internal successors, (139), 16 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:03,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:03,853 INFO L93 Difference]: Finished difference Result 260 states and 377 transitions. [2022-01-10 14:27:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 14:27:03,854 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 16 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:03,855 INFO L225 Difference]: With dead ends: 260 [2022-01-10 14:27:03,855 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:03,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-01-10 14:27:03,857 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 25 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:03,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 206 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 14:27:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4) internal successors, (196), 140 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 196 transitions. [2022-01-10 14:27:03,868 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 196 transitions. Word has length 139 [2022-01-10 14:27:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:03,869 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 196 transitions. [2022-01-10 14:27:03,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 16 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 196 transitions. [2022-01-10 14:27:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:03,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:03,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:03,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:27:03,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1167167562, now seen corresponding path program 1 times [2022-01-10 14:27:03,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:03,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019777113] [2022-01-10 14:27:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:03,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:04,475 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 14:27:04,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:04,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019777113] [2022-01-10 14:27:04,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019777113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:04,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:04,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-10 14:27:04,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399809352] [2022-01-10 14:27:04,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:04,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 14:27:04,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 14:27:04,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2022-01-10 14:27:04,478 INFO L87 Difference]: Start difference. First operand 141 states and 196 transitions. Second operand has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:06,932 INFO L93 Difference]: Finished difference Result 252 states and 361 transitions. [2022-01-10 14:27:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 14:27:06,935 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:06,937 INFO L225 Difference]: With dead ends: 252 [2022-01-10 14:27:06,937 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:06,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 14:27:06,939 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 33 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:06,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 206 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3026 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 14:27:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.3714285714285714) internal successors, (192), 140 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:06,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2022-01-10 14:27:06,949 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 139 [2022-01-10 14:27:06,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:06,950 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2022-01-10 14:27:06,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2022-01-10 14:27:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:06,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:06,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:06,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:27:06,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1861814569, now seen corresponding path program 1 times [2022-01-10 14:27:06,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:06,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058201178] [2022-01-10 14:27:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:06,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:07,611 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 14:27:07,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:07,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058201178] [2022-01-10 14:27:07,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058201178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:07,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:07,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-10 14:27:07,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366071745] [2022-01-10 14:27:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:07,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 14:27:07,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 14:27:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2022-01-10 14:27:07,614 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:10,913 INFO L93 Difference]: Finished difference Result 244 states and 345 transitions. [2022-01-10 14:27:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 14:27:10,913 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:10,914 INFO L225 Difference]: With dead ends: 244 [2022-01-10 14:27:10,915 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:10,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=1663, Unknown=0, NotChecked=0, Total=1806 [2022-01-10 14:27:10,928 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:10,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 209 Invalid, 3869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 14:27:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.3428571428571427) internal successors, (188), 140 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 188 transitions. [2022-01-10 14:27:10,937 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 188 transitions. Word has length 139 [2022-01-10 14:27:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:10,938 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 188 transitions. [2022-01-10 14:27:10,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 188 transitions. [2022-01-10 14:27:10,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:10,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:10,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:10,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 14:27:10,948 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:10,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:10,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1333448968, now seen corresponding path program 1 times [2022-01-10 14:27:10,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:10,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551977473] [2022-01-10 14:27:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:10,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:11,748 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 14:27:11,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:11,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551977473] [2022-01-10 14:27:11,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551977473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:11,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:11,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-10 14:27:11,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778082818] [2022-01-10 14:27:11,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:11,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-10 14:27:11,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-10 14:27:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2022-01-10 14:27:11,753 INFO L87 Difference]: Start difference. First operand 141 states and 188 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:15,255 INFO L93 Difference]: Finished difference Result 236 states and 329 transitions. [2022-01-10 14:27:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 14:27:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:15,256 INFO L225 Difference]: With dead ends: 236 [2022-01-10 14:27:15,256 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:15,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=171, Invalid=2379, Unknown=0, NotChecked=0, Total=2550 [2022-01-10 14:27:15,258 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 25 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4608 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 4636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:15,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 212 Invalid, 4636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4608 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 14:27:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.3142857142857143) internal successors, (184), 140 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 184 transitions. [2022-01-10 14:27:15,268 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 184 transitions. Word has length 139 [2022-01-10 14:27:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:15,269 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 184 transitions. [2022-01-10 14:27:15,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 184 transitions. [2022-01-10 14:27:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:15,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:15,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:15,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 14:27:15,270 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:15,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1311381529, now seen corresponding path program 1 times [2022-01-10 14:27:15,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:15,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196161458] [2022-01-10 14:27:15,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:15,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:16,131 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 14:27:16,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:16,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196161458] [2022-01-10 14:27:16,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196161458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:16,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:16,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-10 14:27:16,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138066113] [2022-01-10 14:27:16,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:16,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-10 14:27:16,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-10 14:27:16,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=928, Unknown=0, NotChecked=0, Total=992 [2022-01-10 14:27:16,133 INFO L87 Difference]: Start difference. First operand 141 states and 184 transitions. Second operand has 32 states, 32 states have (on average 4.34375) internal successors, (139), 32 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:19,966 INFO L93 Difference]: Finished difference Result 228 states and 313 transitions. [2022-01-10 14:27:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 14:27:19,967 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.34375) internal successors, (139), 32 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:19,968 INFO L225 Difference]: With dead ends: 228 [2022-01-10 14:27:19,968 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:19,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=199, Invalid=3223, Unknown=0, NotChecked=0, Total=3422 [2022-01-10 14:27:19,969 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 57 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5077 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 5137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 5077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:19,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 209 Invalid, 5137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 5077 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 14:27:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2857142857142858) internal successors, (180), 140 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 180 transitions. [2022-01-10 14:27:19,980 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 180 transitions. Word has length 139 [2022-01-10 14:27:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:19,981 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 180 transitions. [2022-01-10 14:27:19,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.34375) internal successors, (139), 32 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 180 transitions. [2022-01-10 14:27:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:19,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:19,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:19,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 14:27:19,988 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:19,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1882632762, now seen corresponding path program 1 times [2022-01-10 14:27:19,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:19,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084935505] [2022-01-10 14:27:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:19,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:20,971 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 14:27:20,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:20,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084935505] [2022-01-10 14:27:20,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084935505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:20,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:20,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-10 14:27:20,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018850102] [2022-01-10 14:27:20,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:20,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-10 14:27:20,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:20,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-10 14:27:20,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1188, Unknown=0, NotChecked=0, Total=1260 [2022-01-10 14:27:20,974 INFO L87 Difference]: Start difference. First operand 141 states and 180 transitions. Second operand has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:25,463 INFO L93 Difference]: Finished difference Result 220 states and 297 transitions. [2022-01-10 14:27:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-10 14:27:25,463 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:25,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:25,464 INFO L225 Difference]: With dead ends: 220 [2022-01-10 14:27:25,464 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:25,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=227, Invalid=4195, Unknown=0, NotChecked=0, Total=4422 [2022-01-10 14:27:25,466 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 33 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 5752 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 5788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:25,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 212 Invalid, 5788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 5752 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-10 14:27:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2571428571428571) internal successors, (176), 140 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2022-01-10 14:27:25,477 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 139 [2022-01-10 14:27:25,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:25,478 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2022-01-10 14:27:25,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 36 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2022-01-10 14:27:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:25,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:25,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:25,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 14:27:25,479 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash -303301285, now seen corresponding path program 1 times [2022-01-10 14:27:25,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:25,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069947625] [2022-01-10 14:27:25,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:25,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:26,692 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 14:27:26,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:26,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069947625] [2022-01-10 14:27:26,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069947625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:26,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:26,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-10 14:27:26,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250070136] [2022-01-10 14:27:26,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:26,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-10 14:27:26,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:26,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-10 14:27:26,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1480, Unknown=0, NotChecked=0, Total=1560 [2022-01-10 14:27:26,694 INFO L87 Difference]: Start difference. First operand 141 states and 176 transitions. Second operand has 40 states, 40 states have (on average 3.475) internal successors, (139), 40 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:31,588 INFO L93 Difference]: Finished difference Result 212 states and 281 transitions. [2022-01-10 14:27:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-10 14:27:31,589 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.475) internal successors, (139), 40 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:31,591 INFO L225 Difference]: With dead ends: 212 [2022-01-10 14:27:31,591 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:31,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=255, Invalid=5295, Unknown=0, NotChecked=0, Total=5550 [2022-01-10 14:27:31,594 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 73 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 6086 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 6162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 6086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:31,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 206 Invalid, 6162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 6086 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-10 14:27:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2285714285714286) internal successors, (172), 140 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2022-01-10 14:27:31,610 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 139 [2022-01-10 14:27:31,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:31,611 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2022-01-10 14:27:31,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.475) internal successors, (139), 40 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:31,611 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2022-01-10 14:27:31,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:31,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:31,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:31,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 14:27:31,613 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1871378812, now seen corresponding path program 1 times [2022-01-10 14:27:31,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:31,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979893636] [2022-01-10 14:27:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:31,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:33,034 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 14:27:33,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:33,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979893636] [2022-01-10 14:27:33,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979893636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:33,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:33,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-10 14:27:33,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168937718] [2022-01-10 14:27:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:33,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-10 14:27:33,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:33,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-10 14:27:33,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1804, Unknown=0, NotChecked=0, Total=1892 [2022-01-10 14:27:33,036 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 44 states, 44 states have (on average 3.159090909090909) internal successors, (139), 44 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:38,300 INFO L93 Difference]: Finished difference Result 204 states and 265 transitions. [2022-01-10 14:27:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-10 14:27:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.159090909090909) internal successors, (139), 44 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:38,301 INFO L225 Difference]: With dead ends: 204 [2022-01-10 14:27:38,301 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:38,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=283, Invalid=6523, Unknown=0, NotChecked=0, Total=6806 [2022-01-10 14:27:38,303 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 41 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6685 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 6729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 6685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:38,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 209 Invalid, 6729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 6685 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-10 14:27:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2) internal successors, (168), 140 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2022-01-10 14:27:38,316 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 139 [2022-01-10 14:27:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:38,316 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2022-01-10 14:27:38,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.159090909090909) internal successors, (139), 44 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2022-01-10 14:27:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:38,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:38,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:38,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 14:27:38,318 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:38,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1851041437, now seen corresponding path program 1 times [2022-01-10 14:27:38,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:38,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122715958] [2022-01-10 14:27:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:38,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:39,948 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 14:27:39,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:39,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122715958] [2022-01-10 14:27:39,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122715958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:39,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:39,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-10 14:27:39,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266490267] [2022-01-10 14:27:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:39,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-10 14:27:39,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:39,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-10 14:27:39,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2160, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 14:27:39,950 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 48 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:45,903 INFO L93 Difference]: Finished difference Result 196 states and 249 transitions. [2022-01-10 14:27:45,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-10 14:27:45,903 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 48 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:45,904 INFO L225 Difference]: With dead ends: 196 [2022-01-10 14:27:45,904 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:45,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=311, Invalid=7879, Unknown=0, NotChecked=0, Total=8190 [2022-01-10 14:27:45,906 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 89 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 7157 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 7249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 7157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:45,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 209 Invalid, 7249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 7157 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 14:27:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.1714285714285715) internal successors, (164), 140 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2022-01-10 14:27:45,919 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 139 [2022-01-10 14:27:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:45,919 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2022-01-10 14:27:45,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 48 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2022-01-10 14:27:45,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:45,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:45,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:45,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 14:27:45,921 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:45,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:45,921 INFO L85 PathProgramCache]: Analyzing trace with hash 881460414, now seen corresponding path program 1 times [2022-01-10 14:27:45,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:45,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616560216] [2022-01-10 14:27:45,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:45,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:27:47,685 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 14:27:47,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:27:47,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616560216] [2022-01-10 14:27:47,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616560216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:27:47,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:27:47,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-10 14:27:47,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594567555] [2022-01-10 14:27:47,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:27:47,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-10 14:27:47,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:27:47,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-10 14:27:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2548, Unknown=0, NotChecked=0, Total=2652 [2022-01-10 14:27:47,694 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand has 52 states, 52 states have (on average 2.673076923076923) internal successors, (139), 52 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:27:54,046 INFO L93 Difference]: Finished difference Result 188 states and 233 transitions. [2022-01-10 14:27:54,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-10 14:27:54,047 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.673076923076923) internal successors, (139), 52 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-10 14:27:54,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:27:54,047 INFO L225 Difference]: With dead ends: 188 [2022-01-10 14:27:54,047 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 14:27:54,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=339, Invalid=9363, Unknown=0, NotChecked=0, Total=9702 [2022-01-10 14:27:54,049 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 49 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 7597 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 7649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 7597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 14:27:54,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 209 Invalid, 7649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 7597 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 14:27:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 14:27:54,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 14:27:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.1428571428571428) internal successors, (160), 140 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2022-01-10 14:27:54,061 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 139 [2022-01-10 14:27:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:27:54,062 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2022-01-10 14:27:54,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.673076923076923) internal successors, (139), 52 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:27:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2022-01-10 14:27:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 14:27:54,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:27:54,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:27:54,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 14:27:54,063 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:27:54,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:27:54,063 INFO L85 PathProgramCache]: Analyzing trace with hash -580119585, now seen corresponding path program 1 times [2022-01-10 14:27:54,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:27:54,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52297846] [2022-01-10 14:27:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:27:54,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:27:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat