/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/array-multidimensional/add-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:12:47,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:12:47,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:12:47,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:12:47,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:12:47,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:12:47,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:12:47,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:12:47,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:12:47,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:12:47,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:12:47,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:12:47,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:12:47,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:12:47,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:12:47,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:12:47,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:12:47,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:12:47,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:12:47,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:12:47,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:12:47,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:12:47,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:12:47,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:12:47,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 03:12:47,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 03:12:47,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 03:12:47,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 03:12:47,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 03:12:47,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 03:12:47,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:12:47,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:12:47,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:12:47,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:12:47,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:12:47,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:12:47,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:12:47,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:12:47,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:12:47,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:12:47,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:12:47,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:12:47,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:12:47,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:12:47,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:12:47,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:12:47,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:12:47,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:12:47,366 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:12:47,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:12:47,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:12:47,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:12:47,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:12:47,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:12:47,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:12:47,367 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:12:47,367 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:12:47,367 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:12:47,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:12:47,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:12:47,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:12:47,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:12:47,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:12:47,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:12:47,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:12:47,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:12:47,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:12:47,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:12:47,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:12:47,370 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:12:47,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:12:47,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:12:47,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:12:47,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:12:47,371 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:12:47,371 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:12:47,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:12:47,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:12:47,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:12:47,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:12:47,639 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:12:47,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/add-2-n-u.c [2022-01-11 03:12:47,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ef8fc8c/e76e6ab83dac415c820bcbc4c6b2bc5f/FLAG4acb7a1ec [2022-01-11 03:12:48,014 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:12:48,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/add-2-n-u.c [2022-01-11 03:12:48,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ef8fc8c/e76e6ab83dac415c820bcbc4c6b2bc5f/FLAG4acb7a1ec [2022-01-11 03:12:48,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ef8fc8c/e76e6ab83dac415c820bcbc4c6b2bc5f [2022-01-11 03:12:48,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:12:48,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:12:48,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:12:48,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:12:48,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:12:48,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69cd8074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48, skipping insertion in model container [2022-01-11 03:12:48,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:12:48,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:12:48,169 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/add-2-n-u.c[321,334] [2022-01-11 03:12:48,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:12:48,189 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:12:48,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/add-2-n-u.c[321,334] [2022-01-11 03:12:48,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:12:48,213 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:12:48,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48 WrapperNode [2022-01-11 03:12:48,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:12:48,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:12:48,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:12:48,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:12:48,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,254 INFO L137 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-01-11 03:12:48,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:12:48,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:12:48,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:12:48,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:12:48,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:12:48,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:12:48,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:12:48,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:12:48,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:12:48,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:12:48,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 03:12:48,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 03:12:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:12:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:12:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 03:12:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 03:12:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:12:48,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:12:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 03:12:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 03:12:48,376 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:12:48,377 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:12:48,656 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:12:48,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:12:48,660 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-11 03:12:48,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:12:48 BoogieIcfgContainer [2022-01-11 03:12:48,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:12:48,662 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:12:48,662 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:12:48,663 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:12:48,665 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:12:48" (1/1) ... [2022-01-11 03:12:48,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:12:48 BasicIcfg [2022-01-11 03:12:48,782 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:12:48,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:12:48,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:12:48,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:12:48,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:12:48" (1/4) ... [2022-01-11 03:12:48,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4ec63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:12:48, skipping insertion in model container [2022-01-11 03:12:48,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:12:48" (2/4) ... [2022-01-11 03:12:48,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4ec63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:12:48, skipping insertion in model container [2022-01-11 03:12:48,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:12:48" (3/4) ... [2022-01-11 03:12:48,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4ec63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:12:48, skipping insertion in model container [2022-01-11 03:12:48,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:12:48" (4/4) ... [2022-01-11 03:12:48,791 INFO L111 eAbstractionObserver]: Analyzing ICFG add-2-n-u.cTransformedIcfg [2022-01-11 03:12:48,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:12:48,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:12:48,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:12:48,836 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 03:12:48,837 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:12:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 03:12:48,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:12:48,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:12:48,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:12:48,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:12:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1817182511, now seen corresponding path program 1 times [2022-01-11 03:12:48,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:12:48,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689662200] [2022-01-11 03:12:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:48,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:12:48,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:12:48,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33996946] [2022-01-11 03:12:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:48,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:12:48,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:12:48,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 03:12:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:12:49,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-11 03:12:49,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:12:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:12:49,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:12:49,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:12:49,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689662200] [2022-01-11 03:12:49,168 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:12:49,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33996946] [2022-01-11 03:12:49,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33996946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:12:49,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:12:49,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:12:49,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470918279] [2022-01-11 03:12:49,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:12:49,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 03:12:49,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:12:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 03:12:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:12:49,195 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:49,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:12:49,215 INFO L93 Difference]: Finished difference Result 40 states and 64 transitions. [2022-01-11 03:12:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 03:12:49,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-11 03:12:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:12:49,223 INFO L225 Difference]: With dead ends: 40 [2022-01-11 03:12:49,223 INFO L226 Difference]: Without dead ends: 17 [2022-01-11 03:12:49,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:12:49,230 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:12:49,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:12:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-11 03:12:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-11 03:12:49,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-01-11 03:12:49,255 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 10 [2022-01-11 03:12:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:12:49,256 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-01-11 03:12:49,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2022-01-11 03:12:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 03:12:49,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:12:49,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:12:49,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 03:12:49,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-11 03:12:49,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:12:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:12:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash -45743025, now seen corresponding path program 1 times [2022-01-11 03:12:49,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:12:49,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831740277] [2022-01-11 03:12:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:49,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:12:49,524 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:12:49,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346784446] [2022-01-11 03:12:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:49,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:49,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:12:49,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:12:49,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 03:12:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:12:49,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 03:12:49,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:12:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:12:49,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:12:49,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:12:49,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831740277] [2022-01-11 03:12:49,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:12:49,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346784446] [2022-01-11 03:12:49,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346784446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:12:49,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:12:49,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 03:12:49,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37514544] [2022-01-11 03:12:49,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:12:49,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 03:12:49,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:12:49,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 03:12:49,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:12:49,776 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:12:50,100 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2022-01-11 03:12:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:12:50,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-11 03:12:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:12:50,102 INFO L225 Difference]: With dead ends: 45 [2022-01-11 03:12:50,102 INFO L226 Difference]: Without dead ends: 30 [2022-01-11 03:12:50,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:12:50,104 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:12:50,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 29 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 03:12:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-11 03:12:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2022-01-11 03:12:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-01-11 03:12:50,108 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2022-01-11 03:12:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:12:50,108 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-01-11 03:12:50,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-01-11 03:12:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 03:12:50,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:12:50,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:12:50,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 03:12:50,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-01-11 03:12:50,310 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:12:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:12:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1080138002, now seen corresponding path program 1 times [2022-01-11 03:12:50,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:12:50,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064390530] [2022-01-11 03:12:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:50,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:12:50,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:12:50,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182215583] [2022-01-11 03:12:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:50,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:12:50,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:12:50,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 03:12:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:12:50,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 03:12:50,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:12:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 03:12:50,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:12:50,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:12:50,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064390530] [2022-01-11 03:12:50,573 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:12:50,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182215583] [2022-01-11 03:12:50,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182215583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:12:50,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:12:50,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 03:12:50,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725168460] [2022-01-11 03:12:50,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:12:50,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 03:12:50,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:12:50,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 03:12:50,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:12:50,575 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:12:50,691 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2022-01-11 03:12:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:12:50,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-01-11 03:12:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:12:50,692 INFO L225 Difference]: With dead ends: 55 [2022-01-11 03:12:50,692 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 03:12:50,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:12:50,693 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:12:50,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 03:12:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 03:12:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-01-11 03:12:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-01-11 03:12:50,696 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2022-01-11 03:12:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:12:50,696 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-01-11 03:12:50,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:50,696 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-01-11 03:12:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 03:12:50,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:12:50,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:12:50,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 03:12:50,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:50,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:12:50,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:12:50,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1136555454, now seen corresponding path program 1 times [2022-01-11 03:12:50,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:12:50,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881210498] [2022-01-11 03:12:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:50,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:12:50,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:12:50,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132846081] [2022-01-11 03:12:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:50,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:50,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:12:50,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:12:50,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 03:12:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:12:51,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 03:12:51,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:12:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 03:12:51,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:12:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 03:12:51,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:12:51,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881210498] [2022-01-11 03:12:51,607 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:12:51,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132846081] [2022-01-11 03:12:51,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132846081] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:12:51,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:12:51,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2022-01-11 03:12:51,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438974460] [2022-01-11 03:12:51,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:12:51,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 03:12:51,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:12:51,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 03:12:51,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-11 03:12:51,608 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:12:52,361 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-01-11 03:12:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 03:12:52,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 18 [2022-01-11 03:12:52,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:12:52,362 INFO L225 Difference]: With dead ends: 50 [2022-01-11 03:12:52,362 INFO L226 Difference]: Without dead ends: 31 [2022-01-11 03:12:52,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2022-01-11 03:12:52,363 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:12:52,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 34 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 03:12:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-11 03:12:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-11 03:12:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-01-11 03:12:52,369 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2022-01-11 03:12:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:12:52,369 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-01-11 03:12:52,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-01-11 03:12:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 03:12:52,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:12:52,370 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:12:52,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 03:12:52,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:52,575 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:12:52,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:12:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 987982831, now seen corresponding path program 2 times [2022-01-11 03:12:52,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:12:52,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365984539] [2022-01-11 03:12:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:52,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:12:52,600 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:12:52,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756746143] [2022-01-11 03:12:52,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 03:12:52,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:52,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:12:52,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:12:52,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 03:12:52,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 03:12:52,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:12:52,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 03:12:52,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:12:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 03:12:53,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:12:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 03:12:53,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:12:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365984539] [2022-01-11 03:12:53,625 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:12:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756746143] [2022-01-11 03:12:53,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756746143] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:12:53,625 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:12:53,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2022-01-11 03:12:53,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405990484] [2022-01-11 03:12:53,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:12:53,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 03:12:53,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:12:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 03:12:53,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-01-11 03:12:53,627 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:55,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:12:55,502 INFO L93 Difference]: Finished difference Result 106 states and 135 transitions. [2022-01-11 03:12:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 03:12:55,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 27 [2022-01-11 03:12:55,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:12:55,504 INFO L225 Difference]: With dead ends: 106 [2022-01-11 03:12:55,504 INFO L226 Difference]: Without dead ends: 85 [2022-01-11 03:12:55,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-01-11 03:12:55,505 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 144 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:12:55,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 62 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 03:12:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-11 03:12:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 37. [2022-01-11 03:12:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-01-11 03:12:55,516 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 27 [2022-01-11 03:12:55,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:12:55,516 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-01-11 03:12:55,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-01-11 03:12:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 03:12:55,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:12:55,517 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:12:55,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 03:12:55,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:55,722 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:12:55,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:12:55,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1613941678, now seen corresponding path program 3 times [2022-01-11 03:12:55,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:12:55,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109399852] [2022-01-11 03:12:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:55,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:12:55,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:12:55,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736057145] [2022-01-11 03:12:55,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 03:12:55,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:55,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:12:55,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:12:55,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 03:12:56,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-11 03:12:56,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:12:56,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 03:12:56,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:12:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-11 03:12:56,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:12:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-11 03:12:56,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:12:56,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109399852] [2022-01-11 03:12:56,332 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:12:56,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736057145] [2022-01-11 03:12:56,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736057145] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:12:56,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:12:56,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2022-01-11 03:12:56,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141257179] [2022-01-11 03:12:56,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:12:56,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 03:12:56,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:12:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 03:12:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 03:12:56,333 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:56,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:12:56,879 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2022-01-11 03:12:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 03:12:56,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 30 [2022-01-11 03:12:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:12:56,880 INFO L225 Difference]: With dead ends: 110 [2022-01-11 03:12:56,880 INFO L226 Difference]: Without dead ends: 91 [2022-01-11 03:12:56,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-11 03:12:56,881 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 195 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:12:56,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 73 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 03:12:56,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-11 03:12:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 57. [2022-01-11 03:12:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2022-01-11 03:12:56,913 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 30 [2022-01-11 03:12:56,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:12:56,914 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2022-01-11 03:12:56,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:12:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2022-01-11 03:12:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 03:12:56,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:12:56,921 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:12:56,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 03:12:57,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:57,122 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:12:57,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:12:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1110379023, now seen corresponding path program 4 times [2022-01-11 03:12:57,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:12:57,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244437299] [2022-01-11 03:12:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:12:57,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:12:57,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:12:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661652301] [2022-01-11 03:12:57,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 03:12:57,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:12:57,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:12:57,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:12:57,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 03:12:57,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 03:12:57,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:12:57,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-11 03:12:57,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:12:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-01-11 03:12:57,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:13:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 46 proven. 16 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-11 03:13:00,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:13:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244437299] [2022-01-11 03:13:00,554 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:13:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661652301] [2022-01-11 03:13:00,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661652301] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:13:00,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:13:00,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2022-01-11 03:13:00,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376829153] [2022-01-11 03:13:00,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:13:00,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 03:13:00,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:13:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 03:13:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-11 03:13:00,556 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:13:05,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:13:05,086 INFO L93 Difference]: Finished difference Result 118 states and 145 transitions. [2022-01-11 03:13:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 03:13:05,087 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 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 50 [2022-01-11 03:13:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:13:05,087 INFO L225 Difference]: With dead ends: 118 [2022-01-11 03:13:05,087 INFO L226 Difference]: Without dead ends: 60 [2022-01-11 03:13:05,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-01-11 03:13:05,088 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:13:05,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 170 Invalid, 0 Unknown, 6 Unchecked, 4.4s Time] [2022-01-11 03:13:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-11 03:13:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-01-11 03:13:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 59 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:13:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2022-01-11 03:13:05,102 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 50 [2022-01-11 03:13:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:13:05,102 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2022-01-11 03:13:05,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:13:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2022-01-11 03:13:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 03:13:05,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:13:05,103 INFO L514 BasicCegarLoop]: trace histogram [11, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:13:05,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-11 03:13:05,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:13:05,304 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:13:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:13:05,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1120443786, now seen corresponding path program 5 times [2022-01-11 03:13:05,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:13:05,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613785588] [2022-01-11 03:13:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:13:05,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:13:05,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:13:05,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891728325] [2022-01-11 03:13:05,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-11 03:13:05,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:13:05,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:13:05,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:13:05,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process