/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/min-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:14:17,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:14:17,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:14:17,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:14:17,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:14:17,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:14:17,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:14:17,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:14:17,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:14:17,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:14:17,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:14:17,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:14:17,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:14:17,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:14:17,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:14:17,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:14:17,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:14:17,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:14:17,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:14:17,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:14:17,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:14:17,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:14:17,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:14:17,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:14:17,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 03:14:17,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 03:14:17,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 03:14:17,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 03:14:17,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 03:14:17,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 03:14:17,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:14:17,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:14:17,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:14:17,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:14:17,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:14:17,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:14:17,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:14:17,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:14:17,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:14:17,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:14:17,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:14:17,399 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 03:14:17,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:14:17,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:14:17,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:14:17,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:14:17,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:14:17,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:14:17,422 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:14:17,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:14:17,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:14:17,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:14:17,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:14:17,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:14:17,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:14:17,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:14:17,423 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:14:17,423 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:14:17,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:14:17,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:14:17,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:14:17,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:14:17,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:14:17,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:14:17,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:14:17,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:14:17,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:14:17,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:14:17,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:14:17,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:14:17,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:14:17,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:14:17,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:14:17,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:14:17,426 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:14:17,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:14:17,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:14:17,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:14:17,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:14:17,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:14:17,633 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:14:17,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/min-3-n-u.c [2022-01-11 03:14:17,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f823e6325/ba448c9c7f0d44c9a506cdee3d56e405/FLAGe7ddc7e2c [2022-01-11 03:14:18,012 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:14:18,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/min-3-n-u.c [2022-01-11 03:14:18,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f823e6325/ba448c9c7f0d44c9a506cdee3d56e405/FLAGe7ddc7e2c [2022-01-11 03:14:18,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f823e6325/ba448c9c7f0d44c9a506cdee3d56e405 [2022-01-11 03:14:18,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:14:18,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:14:18,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:14:18,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:14:18,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:14:18,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6ec220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18, skipping insertion in model container [2022-01-11 03:14:18,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:14:18,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:14:18,578 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/min-3-n-u.c[321,334] [2022-01-11 03:14:18,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:14:18,616 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:14:18,623 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/min-3-n-u.c[321,334] [2022-01-11 03:14:18,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:14:18,644 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:14:18,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18 WrapperNode [2022-01-11 03:14:18,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:14:18,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:14:18,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:14:18,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:14:18,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,671 INFO L137 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2022-01-11 03:14:18,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:14:18,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:14:18,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:14:18,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:14:18,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:14:18,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:14:18,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:14:18,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:14:18,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (1/1) ... [2022-01-11 03:14:18,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:14:18,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:18,728 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 03:14:18,730 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 03:14:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:14:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:14:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 03:14:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 03:14:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:14:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:14:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 03:14:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 03:14:18,803 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:14:18,804 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:14:20,041 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:14:20,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:14:20,046 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-11 03:14:20,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:14:20 BoogieIcfgContainer [2022-01-11 03:14:20,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:14:20,049 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:14:20,049 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:14:20,055 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:14:20,058 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:14:20" (1/1) ... [2022-01-11 03:14:20,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:14:20 BasicIcfg [2022-01-11 03:14:20,210 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:14:20,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:14:20,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:14:20,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:14:20,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:14:18" (1/4) ... [2022-01-11 03:14:20,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fb36b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:14:20, skipping insertion in model container [2022-01-11 03:14:20,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:14:18" (2/4) ... [2022-01-11 03:14:20,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fb36b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:14:20, skipping insertion in model container [2022-01-11 03:14:20,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:14:20" (3/4) ... [2022-01-11 03:14:20,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fb36b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:14:20, skipping insertion in model container [2022-01-11 03:14:20,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:14:20" (4/4) ... [2022-01-11 03:14:20,216 INFO L111 eAbstractionObserver]: Analyzing ICFG min-3-n-u.cTransformedIcfg [2022-01-11 03:14:20,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:14:20,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:14:20,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:14:20,287 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 03:14:20,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:14:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 03:14:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 03:14:20,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:20,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:14:20,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:20,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1131834211, now seen corresponding path program 1 times [2022-01-11 03:14:20,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:20,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294056782] [2022-01-11 03:14:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:20,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:20,443 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:20,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673145267] [2022-01-11 03:14:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:20,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:20,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:20,450 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 03:14:20,476 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 03:14:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:14:20,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-11 03:14:20,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:14:20,624 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 03:14:20,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:14:20,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:14:20,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294056782] [2022-01-11 03:14:20,626 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:14:20,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673145267] [2022-01-11 03:14:20,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673145267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:14:20,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:14:20,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:14:20,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099558533] [2022-01-11 03:14:20,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:14:20,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 03:14:20,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:14:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 03:14:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:14:20,666 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 03:14:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:14:20,683 INFO L93 Difference]: Finished difference Result 56 states and 94 transitions. [2022-01-11 03:14:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 03:14:20,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-01-11 03:14:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:14:20,695 INFO L225 Difference]: With dead ends: 56 [2022-01-11 03:14:20,695 INFO L226 Difference]: Without dead ends: 25 [2022-01-11 03:14:20,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 03:14:20,701 INFO L933 BasicCegarLoop]: 38 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, 38 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 03:14:20,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:14:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-11 03:14:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-11 03:14:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 03:14:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-01-11 03:14:20,737 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 11 [2022-01-11 03:14:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:14:20,737 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-01-11 03:14:20,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 03:14:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-01-11 03:14:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 03:14:20,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:20,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:14:20,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 03:14:20,963 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 03:14:20,964 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2019337892, now seen corresponding path program 1 times [2022-01-11 03:14:20,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:20,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117173313] [2022-01-11 03:14:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:20,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:20,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:20,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244199005] [2022-01-11 03:14:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:20,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:20,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:20,988 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 03:14:21,011 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 03:14:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:14:21,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 03:14:21,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:14:21,312 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 03:14:21,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:14:21,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:14:21,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117173313] [2022-01-11 03:14:21,314 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:14:21,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244199005] [2022-01-11 03:14:21,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244199005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:14:21,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:14:21,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 03:14:21,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77184726] [2022-01-11 03:14:21,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:14:21,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 03:14:21,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:14:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 03:14:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:14:21,321 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 03:14:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:14:22,538 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2022-01-11 03:14:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:14:22,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-01-11 03:14:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:14:22,540 INFO L225 Difference]: With dead ends: 67 [2022-01-11 03:14:22,540 INFO L226 Difference]: Without dead ends: 46 [2022-01-11 03:14:22,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 03:14:22,542 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:14:22,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 62 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 03:14:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-11 03:14:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 27. [2022-01-11 03:14:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 03:14:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-01-11 03:14:22,567 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 11 [2022-01-11 03:14:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:14:22,568 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-01-11 03:14:22,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 03:14:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-01-11 03:14:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-11 03:14:22,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:22,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:14:22,589 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 03:14:22,783 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 03:14:22,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -192962176, now seen corresponding path program 1 times [2022-01-11 03:14:22,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:22,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907861230] [2022-01-11 03:14:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:22,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:22,814 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:22,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706766030] [2022-01-11 03:14:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:22,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:22,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:22,829 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 03:14:22,830 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 03:14:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:14:22,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 03:14:22,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:14:23,106 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 03:14:23,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:14:23,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:14:23,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907861230] [2022-01-11 03:14:23,108 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:14:23,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706766030] [2022-01-11 03:14:23,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706766030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:14:23,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:14:23,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 03:14:23,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890756402] [2022-01-11 03:14:23,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:14:23,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 03:14:23,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:14:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 03:14:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:14:23,110 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 03:14:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:14:23,680 INFO L93 Difference]: Finished difference Result 79 states and 109 transitions. [2022-01-11 03:14:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:14:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-11 03:14:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:14:23,685 INFO L225 Difference]: With dead ends: 79 [2022-01-11 03:14:23,685 INFO L226 Difference]: Without dead ends: 43 [2022-01-11 03:14:23,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 03:14:23,686 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 03:14:23,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 72 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 03:14:23,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-11 03:14:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-01-11 03:14:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 03:14:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-01-11 03:14:23,692 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 17 [2022-01-11 03:14:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:14:23,692 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-01-11 03:14:23,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 03:14:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-01-11 03:14:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 03:14:23,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:23,693 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] [2022-01-11 03:14:23,719 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 03:14:23,923 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 03:14:23,924 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1457410529, now seen corresponding path program 1 times [2022-01-11 03:14:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:23,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647748472] [2022-01-11 03:14:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:23,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:23,949 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:23,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710430792] [2022-01-11 03:14:23,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:23,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:23,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:23,950 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 03:14:23,952 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 03:14:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:14:24,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 03:14:24,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:14:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 03:14:24,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:14:24,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:14:24,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647748472] [2022-01-11 03:14:24,213 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:14:24,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710430792] [2022-01-11 03:14:24,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710430792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:14:24,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:14:24,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 03:14:24,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85722402] [2022-01-11 03:14:24,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:14:24,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 03:14:24,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:14:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 03:14:24,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:14:24,216 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 03:14:26,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-11 03:14:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:14:26,823 INFO L93 Difference]: Finished difference Result 88 states and 118 transitions. [2022-01-11 03:14:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:14:26,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-11 03:14:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:14:26,825 INFO L225 Difference]: With dead ends: 88 [2022-01-11 03:14:26,825 INFO L226 Difference]: Without dead ends: 40 [2022-01-11 03:14:26,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 03:14:26,826 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-11 03:14:26,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 46 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-11 03:14:26,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-11 03:14:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-01-11 03:14:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 03:14:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-01-11 03:14:26,831 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 23 [2022-01-11 03:14:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:14:26,831 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-01-11 03:14:26,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 03:14:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-01-11 03:14:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 03:14:26,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:26,832 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] [2022-01-11 03:14:26,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 03:14:27,046 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 03:14:27,046 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:27,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:27,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2071237112, now seen corresponding path program 1 times [2022-01-11 03:14:27,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:27,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60918289] [2022-01-11 03:14:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:27,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:27,081 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:27,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970674596] [2022-01-11 03:14:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:27,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:27,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:27,083 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 03:14:27,084 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 03:14:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:14:27,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-11 03:14:27,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:14:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:14:27,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:14:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:14:29,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:14:29,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60918289] [2022-01-11 03:14:29,956 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:14:29,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970674596] [2022-01-11 03:14:29,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970674596] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:14:29,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:14:29,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2022-01-11 03:14:29,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857991937] [2022-01-11 03:14:29,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:14:29,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 03:14:29,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:14:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 03:14:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-11 03:14:29,958 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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 03:14:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:14:31,277 INFO L93 Difference]: Finished difference Result 84 states and 110 transitions. [2022-01-11 03:14:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 03:14:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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 27 [2022-01-11 03:14:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:14:31,278 INFO L225 Difference]: With dead ends: 84 [2022-01-11 03:14:31,278 INFO L226 Difference]: Without dead ends: 54 [2022-01-11 03:14:31,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=74, Invalid=108, Unknown=0, NotChecked=0, Total=182 [2022-01-11 03:14:31,280 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 03:14:31,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 91 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 74 Invalid, 0 Unknown, 20 Unchecked, 0.5s Time] [2022-01-11 03:14:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-11 03:14:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2022-01-11 03:14:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 03:14:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-01-11 03:14:31,320 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 27 [2022-01-11 03:14:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:14:31,320 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-01-11 03:14:31,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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 03:14:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-01-11 03:14:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 03:14:31,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:31,321 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:14:31,326 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 03:14:31,521 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 03:14:31,522 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:31,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:31,522 INFO L85 PathProgramCache]: Analyzing trace with hash -974778712, now seen corresponding path program 2 times [2022-01-11 03:14:31,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:31,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769213298] [2022-01-11 03:14:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:31,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:31,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:31,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086976060] [2022-01-11 03:14:31,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 03:14:31,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:31,564 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 03:14:31,565 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 03:14:31,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 03:14:31,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:14:31,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 03:14:31,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:14:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:14:32,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:14:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 03:14:32,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:14:32,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769213298] [2022-01-11 03:14:32,599 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:14:32,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086976060] [2022-01-11 03:14:32,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086976060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:14:32,600 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:14:32,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-01-11 03:14:32,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828959817] [2022-01-11 03:14:32,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:14:32,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 03:14:32,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:14:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 03:14:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-11 03:14:32,602 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 03:14:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:14:35,262 INFO L93 Difference]: Finished difference Result 149 states and 196 transitions. [2022-01-11 03:14:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 03:14:35,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 03:14:35,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:14:35,264 INFO L225 Difference]: With dead ends: 149 [2022-01-11 03:14:35,264 INFO L226 Difference]: Without dead ends: 119 [2022-01-11 03:14:35,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-01-11 03:14:35,266 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 344 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:14:35,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 130 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 03:14:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-11 03:14:35,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 48. [2022-01-11 03:14:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.297872340425532) internal successors, (61), 47 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 03:14:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2022-01-11 03:14:35,293 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 30 [2022-01-11 03:14:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:14:35,293 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2022-01-11 03:14:35,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 03:14:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2022-01-11 03:14:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 03:14:35,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:35,294 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:14:35,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-11 03:14:35,503 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 03:14:35,504 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1642853505, now seen corresponding path program 3 times [2022-01-11 03:14:35,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:35,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712702250] [2022-01-11 03:14:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:35,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:35,553 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:35,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864395138] [2022-01-11 03:14:35,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 03:14:35,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:35,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:35,556 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 03:14:35,557 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 03:14:35,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-11 03:14:35,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:14:35,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 03:14:35,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:14:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 03:14:35,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:14:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 03:14:36,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:14:36,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712702250] [2022-01-11 03:14:36,253 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:14:36,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864395138] [2022-01-11 03:14:36,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864395138] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:14:36,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:14:36,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2022-01-11 03:14:36,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286542060] [2022-01-11 03:14:36,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:14:36,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 03:14:36,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:14:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 03:14:36,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 03:14:36,255 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 03:14:37,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-11 03:14:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:14:41,991 INFO L93 Difference]: Finished difference Result 174 states and 226 transitions. [2022-01-11 03:14:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 03:14:41,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 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 33 [2022-01-11 03:14:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:14:41,992 INFO L225 Difference]: With dead ends: 174 [2022-01-11 03:14:41,992 INFO L226 Difference]: Without dead ends: 145 [2022-01-11 03:14:41,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 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 03:14:41,994 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 284 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-11 03:14:41,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 173 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-11 03:14:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-11 03:14:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 102. [2022-01-11 03:14:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.297029702970297) internal successors, (131), 101 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 03:14:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2022-01-11 03:14:42,028 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 33 [2022-01-11 03:14:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:14:42,028 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2022-01-11 03:14:42,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 03:14:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2022-01-11 03:14:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-11 03:14:42,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:42,030 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:14:42,035 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 03:14:42,235 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 03:14:42,236 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:42,236 INFO L85 PathProgramCache]: Analyzing trace with hash 152868888, now seen corresponding path program 4 times [2022-01-11 03:14:42,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:42,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233453927] [2022-01-11 03:14:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:42,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:42,294 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:42,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981302876] [2022-01-11 03:14:42,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 03:14:42,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:42,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:42,295 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 03:14:42,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 03:14:42,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 03:14:42,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:14:42,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 03:14:42,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:14:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 87 proven. 18 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-01-11 03:14:44,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:14:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-01-11 03:14:45,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:14:45,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233453927] [2022-01-11 03:14:45,969 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:14:45,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981302876] [2022-01-11 03:14:45,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981302876] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:14:45,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:14:45,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-01-11 03:14:45,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425825569] [2022-01-11 03:14:45,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:14:45,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 03:14:45,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:14:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 03:14:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-01-11 03:14:45,971 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 03:14:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:14:50,822 INFO L93 Difference]: Finished difference Result 271 states and 364 transitions. [2022-01-11 03:14:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 03:14:50,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 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 93 [2022-01-11 03:14:50,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:14:50,825 INFO L225 Difference]: With dead ends: 271 [2022-01-11 03:14:50,825 INFO L226 Difference]: Without dead ends: 183 [2022-01-11 03:14:50,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-01-11 03:14:50,826 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 197 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:14:50,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 222 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 164 Invalid, 0 Unknown, 55 Unchecked, 2.7s Time] [2022-01-11 03:14:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-11 03:14:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 120. [2022-01-11 03:14:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 119 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 03:14:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2022-01-11 03:14:50,870 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 93 [2022-01-11 03:14:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:14:50,870 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2022-01-11 03:14:50,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 03:14:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2022-01-11 03:14:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 03:14:50,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:14:50,871 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:14:50,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-11 03:14:51,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-01-11 03:14:51,079 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:14:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:14:51,080 INFO L85 PathProgramCache]: Analyzing trace with hash 863494740, now seen corresponding path program 5 times [2022-01-11 03:14:51,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:14:51,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914683530] [2022-01-11 03:14:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:14:51,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:14:51,192 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:14:51,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514292379] [2022-01-11 03:14:51,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-11 03:14:51,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:14:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:14:51,194 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:14:51,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process