/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:04:15,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:04:15,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:04:15,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 15:04:15,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 15:04:15,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 15:04:15,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 15:04:15,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 15:04:15,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 15:04:15,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 15:04:15,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 15:04:15,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 15:04:15,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:04:15,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:04:15,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:04:15,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:04:15,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:04:15,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:04:15,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:04:15,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:04:15,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:04:15,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:04:15,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:04:15,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:04:15,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 15:04:15,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 15:04:15,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 15:04:15,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 15:04:15,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 15:04:15,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 15:04:15,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 15:04:15,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 15:04:15,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 15:04:15,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 15:04:15,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 15:04:15,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 15:04:15,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 15:04:15,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 15:04:15,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:04:15,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:04:15,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:04:15,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:04:15,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:04:15,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:04:15,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:04:15,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:04:15,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:04:15,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:04:15,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:04:15,393 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:04:15,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:04:15,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:04:15,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:04:15,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:04:15,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:04:15,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:04:15,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:04:15,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:04:15,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:04:15,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:04:15,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:04:15,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:04:15,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:04:15,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:04:15,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:04:15,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:04:15,396 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:04:15,396 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:04:15,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:04:15,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:04:15,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:04:15,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:04:15,628 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:04:15,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-01-10 15:04:15,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e67d2e4/35b71f0014304320bae8b9671e86a3bb/FLAG5f62d74ac [2022-01-10 15:04:16,022 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:04:16,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-01-10 15:04:16,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e67d2e4/35b71f0014304320bae8b9671e86a3bb/FLAG5f62d74ac [2022-01-10 15:04:16,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e67d2e4/35b71f0014304320bae8b9671e86a3bb [2022-01-10 15:04:16,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:04:16,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:04:16,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:04:16,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:04:16,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:04:16,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f88734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16, skipping insertion in model container [2022-01-10 15:04:16,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:04:16,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:04:16,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2022-01-10 15:04:16,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:04:16,600 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:04:16,613 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2022-01-10 15:04:16,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:04:16,631 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:04:16,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16 WrapperNode [2022-01-10 15:04:16,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:04:16,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:04:16,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:04:16,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:04:16,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,662 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 61 [2022-01-10 15:04:16,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:04:16,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:04:16,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:04:16,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:04:16,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:04:16,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:04:16,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:04:16,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:04:16,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:04:16,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:16,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 15:04:16,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 15:04:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:04:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:04:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:04:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:04:16,785 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:04:16,786 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:04:16,897 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:04:16,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:04:16,901 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 15:04:16,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:04:16 BoogieIcfgContainer [2022-01-10 15:04:16,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:04:16,902 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:04:16,902 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:04:16,903 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:04:16,905 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:04:16" (1/1) ... [2022-01-10 15:04:16,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:04:16 BasicIcfg [2022-01-10 15:04:16,944 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:04:16,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:04:16,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:04:16,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:04:16,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:04:16" (1/4) ... [2022-01-10 15:04:16,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d65df08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:04:16, skipping insertion in model container [2022-01-10 15:04:16,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:04:16" (2/4) ... [2022-01-10 15:04:16,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d65df08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:04:16, skipping insertion in model container [2022-01-10 15:04:16,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:04:16" (3/4) ... [2022-01-10 15:04:16,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d65df08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:04:16, skipping insertion in model container [2022-01-10 15:04:16,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:04:16" (4/4) ... [2022-01-10 15:04:16,948 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.cTransformedIcfg [2022-01-10 15:04:16,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:04:16,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 15:04:16,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:04:16,981 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 15:04:16,981 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 15:04:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:16,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 15:04:16,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:16,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:17,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 283724844, now seen corresponding path program 1 times [2022-01-10 15:04:17,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:17,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137743034] [2022-01-10 15:04:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:17,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:17,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:17,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137743034] [2022-01-10 15:04:17,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137743034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:04:17,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:04:17,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:04:17,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191804139] [2022-01-10 15:04:17,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:04:17,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:04:17,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:04:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:04:17,190 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:17,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:17,211 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2022-01-10 15:04:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:04:17,213 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 15:04:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:17,218 INFO L225 Difference]: With dead ends: 41 [2022-01-10 15:04:17,219 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 15:04:17,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:04:17,226 INFO L933 BasicCegarLoop]: 24 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, 24 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 [2022-01-10 15:04:17,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:04:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 15:04:17,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-10 15:04:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-01-10 15:04:17,263 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2022-01-10 15:04:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:17,264 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-01-10 15:04:17,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-01-10 15:04:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 15:04:17,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:17,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:17,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:04:17,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:17,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2055196108, now seen corresponding path program 1 times [2022-01-10 15:04:17,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:17,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676245480] [2022-01-10 15:04:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:17,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:17,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:17,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373790782] [2022-01-10 15:04:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:17,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:17,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:17,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:04:17,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 15:04:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:17,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 15:04:17,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:17,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:04:17,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:17,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676245480] [2022-01-10 15:04:17,706 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373790782] [2022-01-10 15:04:17,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373790782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:04:17,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:04:17,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 15:04:17,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245255340] [2022-01-10 15:04:17,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:04:17,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 15:04:17,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:17,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 15:04:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:04:17,712 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:17,905 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-01-10 15:04:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 15:04:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 15:04:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:17,907 INFO L225 Difference]: With dead ends: 31 [2022-01-10 15:04:17,907 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 15:04:17,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-01-10 15:04:17,911 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:17,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 33 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:04:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 15:04:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2022-01-10 15:04:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-01-10 15:04:17,921 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2022-01-10 15:04:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:17,921 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-01-10 15:04:17,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-01-10 15:04:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 15:04:17,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:17,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:17,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:18,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:18,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -713464821, now seen corresponding path program 1 times [2022-01-10 15:04:18,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:18,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510313470] [2022-01-10 15:04:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:18,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:18,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:18,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462251712] [2022-01-10 15:04:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:18,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:18,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:18,156 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) [2022-01-10 15:04:18,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 15:04:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:18,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 15:04:18,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:18,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:04:18,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:18,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510313470] [2022-01-10 15:04:18,282 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:18,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462251712] [2022-01-10 15:04:18,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462251712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:04:18,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:04:18,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:04:18,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795880130] [2022-01-10 15:04:18,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:04:18,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 15:04:18,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 15:04:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:04:18,283 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2022-01-10 15:04:18,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:18,294 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-01-10 15:04:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 15:04:18,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 [2022-01-10 15:04:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:18,294 INFO L225 Difference]: With dead ends: 25 [2022-01-10 15:04:18,294 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 15:04:18,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:04:18,295 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:18,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:04:18,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 15:04:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 15:04:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 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) [2022-01-10 15:04:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-01-10 15:04:18,298 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2022-01-10 15:04:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:18,298 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-01-10 15:04:18,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2022-01-10 15:04:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-01-10 15:04:18,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 15:04:18,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:18,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:18,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:18,517 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,SelfDestructingSolverStorable2 [2022-01-10 15:04:18,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2030540867, now seen corresponding path program 1 times [2022-01-10 15:04:18,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:18,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39888919] [2022-01-10 15:04:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:18,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:18,532 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:18,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021720316] [2022-01-10 15:04:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:18,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:18,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:18,533 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) [2022-01-10 15:04:18,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 15:04:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:18,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 15:04:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:18,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:04:18,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39888919] [2022-01-10 15:04:18,870 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021720316] [2022-01-10 15:04:18,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021720316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:04:18,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:04:18,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 15:04:18,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322105533] [2022-01-10 15:04:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:04:18,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 15:04:18,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 15:04:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:04:18,872 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:18,984 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-01-10 15:04:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:04:18,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-01-10 15:04:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:18,985 INFO L225 Difference]: With dead ends: 28 [2022-01-10 15:04:18,985 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 15:04:18,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 15:04:18,986 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:18,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 68 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:04:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 15:04:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-01-10 15:04:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-01-10 15:04:18,990 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2022-01-10 15:04:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:18,990 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-01-10 15:04:18,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-01-10 15:04:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 15:04:18,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:18,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:19,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:19,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:19,200 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:19,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1478828471, now seen corresponding path program 1 times [2022-01-10 15:04:19,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:19,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286411323] [2022-01-10 15:04:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:19,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:19,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:19,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994360794] [2022-01-10 15:04:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:19,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:19,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:19,221 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) [2022-01-10 15:04:19,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 15:04:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:19,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-10 15:04:19,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:19,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:04:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:21,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:21,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286411323] [2022-01-10 15:04:21,036 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:21,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994360794] [2022-01-10 15:04:21,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994360794] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:04:21,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:04:21,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-01-10 15:04:21,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962081752] [2022-01-10 15:04:21,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:04:21,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 15:04:21,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 15:04:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-10 15:04:21,038 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:21,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:21,514 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-01-10 15:04:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 15:04:21,515 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 15:04:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:21,515 INFO L225 Difference]: With dead ends: 45 [2022-01-10 15:04:21,515 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 15:04:21,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-01-10 15:04:21,516 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:21,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 69 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 77 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2022-01-10 15:04:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 15:04:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2022-01-10 15:04:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-01-10 15:04:21,521 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 16 [2022-01-10 15:04:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:21,522 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-01-10 15:04:21,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:21,522 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-01-10 15:04:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 15:04:21,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:21,522 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:21,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:21,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:21,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1479751992, now seen corresponding path program 1 times [2022-01-10 15:04:21,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:21,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506078876] [2022-01-10 15:04:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:21,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:21,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:21,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145863660] [2022-01-10 15:04:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:21,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:21,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:21,772 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) [2022-01-10 15:04:21,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 15:04:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:21,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 15:04:21,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:22,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:04:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:23,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:23,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506078876] [2022-01-10 15:04:23,001 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:23,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145863660] [2022-01-10 15:04:23,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145863660] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:04:23,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:04:23,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 13 [2022-01-10 15:04:23,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830450529] [2022-01-10 15:04:23,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:04:23,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 15:04:23,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 15:04:23,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-01-10 15:04:23,003 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:25,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:27,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:29,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:31,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:35,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:35,304 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-01-10 15:04:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 15:04:35,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 15:04:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:35,305 INFO L225 Difference]: With dead ends: 52 [2022-01-10 15:04:35,305 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 15:04:35,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2022-01-10 15:04:35,306 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 32 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:35,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 50 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 10.8s Time] [2022-01-10 15:04:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 15:04:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2022-01-10 15:04:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-01-10 15:04:35,311 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2022-01-10 15:04:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:35,311 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-01-10 15:04:35,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-01-10 15:04:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 15:04:35,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:35,312 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:35,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:35,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:35,522 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:35,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1400992384, now seen corresponding path program 1 times [2022-01-10 15:04:35,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:35,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538818328] [2022-01-10 15:04:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:35,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:35,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:35,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244697892] [2022-01-10 15:04:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:35,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:35,540 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) [2022-01-10 15:04:35,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 15:04:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:35,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 15:04:35,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:35,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:04:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:36,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:36,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538818328] [2022-01-10 15:04:36,218 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:36,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244697892] [2022-01-10 15:04:36,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244697892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:04:36,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:04:36,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 15:04:36,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288957313] [2022-01-10 15:04:36,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:04:36,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 15:04:36,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:36,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 15:04:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-01-10 15:04:36,220 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:36,602 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2022-01-10 15:04:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 15:04:36,603 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2022-01-10 15:04:36,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:36,603 INFO L225 Difference]: With dead ends: 70 [2022-01-10 15:04:36,603 INFO L226 Difference]: Without dead ends: 66 [2022-01-10 15:04:36,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2022-01-10 15:04:36,604 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:36,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 108 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 15:04:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-10 15:04:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-01-10 15:04:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 56 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2022-01-10 15:04:36,619 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 17 [2022-01-10 15:04:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:36,619 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2022-01-10 15:04:36,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2022-01-10 15:04:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 15:04:36,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:36,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:36,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:36,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:36,836 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1699021138, now seen corresponding path program 1 times [2022-01-10 15:04:36,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:36,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233577773] [2022-01-10 15:04:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:36,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:36,850 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:36,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908288682] [2022-01-10 15:04:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:36,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:36,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:36,868 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) [2022-01-10 15:04:36,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 15:04:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:36,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 15:04:36,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:37,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:04:37,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:37,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233577773] [2022-01-10 15:04:37,612 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:37,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908288682] [2022-01-10 15:04:37,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908288682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:04:37,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:04:37,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 15:04:37,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896936485] [2022-01-10 15:04:37,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:04:37,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 15:04:37,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 15:04:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:04:37,613 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:38,391 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2022-01-10 15:04:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 15:04:38,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-01-10 15:04:38,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:38,392 INFO L225 Difference]: With dead ends: 86 [2022-01-10 15:04:38,392 INFO L226 Difference]: Without dead ends: 80 [2022-01-10 15:04:38,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 15:04:38,393 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:38,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 61 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 15:04:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-10 15:04:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 62. [2022-01-10 15:04:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 61 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-01-10 15:04:38,404 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 20 [2022-01-10 15:04:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:38,405 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-01-10 15:04:38,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-01-10 15:04:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 15:04:38,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:38,405 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:38,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:38,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:38,613 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:38,613 INFO L85 PathProgramCache]: Analyzing trace with hash 788491695, now seen corresponding path program 1 times [2022-01-10 15:04:38,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:38,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639815956] [2022-01-10 15:04:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:38,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:38,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:38,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461151246] [2022-01-10 15:04:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:38,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:38,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:38,651 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) [2022-01-10 15:04:38,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 15:04:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:38,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 15:04:38,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:40,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:04:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:40,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:40,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639815956] [2022-01-10 15:04:40,866 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:40,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461151246] [2022-01-10 15:04:40,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461151246] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:04:40,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:04:40,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2022-01-10 15:04:40,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350572423] [2022-01-10 15:04:40,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:04:40,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 15:04:40,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:40,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 15:04:40,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-01-10 15:04:40,876 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:43,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:45,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:48,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:50,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 15:04:51,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:51,424 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2022-01-10 15:04:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 15:04:51,424 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2022-01-10 15:04:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:51,426 INFO L225 Difference]: With dead ends: 76 [2022-01-10 15:04:51,426 INFO L226 Difference]: Without dead ends: 70 [2022-01-10 15:04:51,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2022-01-10 15:04:51,427 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 37 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:51,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 110 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 148 Invalid, 4 Unknown, 0 Unchecked, 9.2s Time] [2022-01-10 15:04:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-10 15:04:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2022-01-10 15:04:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 56 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2022-01-10 15:04:51,437 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 20 [2022-01-10 15:04:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:51,437 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2022-01-10 15:04:51,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2022-01-10 15:04:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 15:04:51,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:51,438 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:51,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:51,638 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,SelfDestructingSolverStorable8 [2022-01-10 15:04:51,640 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:51,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1795495822, now seen corresponding path program 1 times [2022-01-10 15:04:51,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:51,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581773317] [2022-01-10 15:04:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:51,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:51,671 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:51,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290923061] [2022-01-10 15:04:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:51,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:51,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:51,691 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) [2022-01-10 15:04:51,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-10 15:04:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:04:51,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 15:04:51,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 15:04:51,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:04:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 15:04:51,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:04:51,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581773317] [2022-01-10 15:04:51,967 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:04:51,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290923061] [2022-01-10 15:04:51,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290923061] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:04:51,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:04:51,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2022-01-10 15:04:51,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317023057] [2022-01-10 15:04:51,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:04:51,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 15:04:51,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:04:51,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 15:04:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 15:04:51,968 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:04:51,998 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2022-01-10 15:04:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:04:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-10 15:04:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:04:51,999 INFO L225 Difference]: With dead ends: 111 [2022-01-10 15:04:51,999 INFO L226 Difference]: Without dead ends: 80 [2022-01-10 15:04:52,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 15:04:52,000 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:04:52,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 51 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:04:52,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-10 15:04:52,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2022-01-10 15:04:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:52,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-01-10 15:04:52,010 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 28 [2022-01-10 15:04:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:04:52,011 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-01-10 15:04:52,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:04:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-01-10 15:04:52,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 15:04:52,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:04:52,011 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:04:52,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-10 15:04:52,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 15:04:52,227 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:04:52,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:04:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1146161777, now seen corresponding path program 2 times [2022-01-10 15:04:52,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:04:52,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318387154] [2022-01-10 15:04:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:04:52,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:04:52,243 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:04:52,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185438258] [2022-01-10 15:04:52,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 15:04:52,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:04:52,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:04:52,244 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:04:52,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-10 15:04:52,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 15:04:52,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:04:52,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 62 conjunts are in the unsatisfiable core [2022-01-10 15:04:52,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:04:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:04:56,100 INFO L328 TraceCheckSpWp]: Computing backward predicates...