/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:26:30,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:26:30,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:26:30,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:26:30,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:26:30,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:26:30,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:26:30,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:26:30,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:26:30,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:26:30,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:26:30,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:26:30,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:26:30,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:26:30,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:26:30,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:26:30,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:26:30,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:26:30,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:26:30,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:26:30,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:26:30,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:26:30,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:26:30,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:26:30,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:26:30,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:26:30,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:26:30,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:26:30,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:26:30,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:26:30,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:26:30,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:26:30,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:26:30,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:26:30,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:26:30,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:26:30,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:26:30,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:26:30,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:26:30,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:26:30,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:26:30,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:26:30,632 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:26:30,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:26:30,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:26:30,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:26:30,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:26:30,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:26:30,634 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:26:30,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:26:30,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:26:30,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:26:30,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:26:30,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:26:30,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:26:30,635 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:26:30,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:26:30,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:26:30,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:26:30,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:26:30,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:26:30,637 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:26:30,637 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:26:30,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:26:30,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:26:30,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:26:30,638 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:26:30,638 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:26:30,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:26:30,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:26:30,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:26:30,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:26:30,847 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:26:30,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound50.c [2022-01-11 02:26:30,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64946f484/7511b577fffc4b8ab9c0ec17b2778a95/FLAGd96989808 [2022-01-11 02:26:31,261 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:26:31,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound50.c [2022-01-11 02:26:31,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64946f484/7511b577fffc4b8ab9c0ec17b2778a95/FLAGd96989808 [2022-01-11 02:26:31,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64946f484/7511b577fffc4b8ab9c0ec17b2778a95 [2022-01-11 02:26:31,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:26:31,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:26:31,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:26:31,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:26:31,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:26:31,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c081743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31, skipping insertion in model container [2022-01-11 02:26:31,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:26:31,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:26:31,421 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/egcd2-ll_valuebound50.c[490,503] [2022-01-11 02:26:31,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:26:31,454 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:26:31,462 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/egcd2-ll_valuebound50.c[490,503] [2022-01-11 02:26:31,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:26:31,477 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:26:31,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31 WrapperNode [2022-01-11 02:26:31,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:26:31,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:26:31,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:26:31,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:26:31,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,512 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 123 [2022-01-11 02:26:31,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:26:31,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:26:31,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:26:31,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:26:31,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:26:31,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:26:31,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:26:31,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:26:31,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (1/1) ... [2022-01-11 02:26:31,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:26:31,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:26:31,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:26:31,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:26:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:26:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:26:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:26:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:26:31,640 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:26:31,641 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:26:32,974 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:26:32,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:26:32,978 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 02:26:32,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:26:32 BoogieIcfgContainer [2022-01-11 02:26:32,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:26:32,980 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:26:32,980 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:26:32,981 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:26:32,983 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:26:32" (1/1) ... [2022-01-11 02:26:33,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:26:33 BasicIcfg [2022-01-11 02:26:33,061 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:26:33,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:26:33,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:26:33,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:26:33,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:26:31" (1/4) ... [2022-01-11 02:26:33,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d442e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:26:33, skipping insertion in model container [2022-01-11 02:26:33,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:26:31" (2/4) ... [2022-01-11 02:26:33,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d442e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:26:33, skipping insertion in model container [2022-01-11 02:26:33,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:26:32" (3/4) ... [2022-01-11 02:26:33,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d442e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:26:33, skipping insertion in model container [2022-01-11 02:26:33,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:26:33" (4/4) ... [2022-01-11 02:26:33,073 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound50.cTransformedIcfg [2022-01-11 02:26:33,077 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:26:33,077 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-11 02:26:33,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:26:33,109 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:26:33,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-11 02:26:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 40 states have (on average 1.6) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 02:26:33,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:26:33,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:26:33,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 02:26:33,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:26:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1812794166, now seen corresponding path program 1 times [2022-01-11 02:26:33,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:26:33,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964942244] [2022-01-11 02:26:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:33,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:26:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:26:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:26:33,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:26:33,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964942244] [2022-01-11 02:26:33,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964942244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:26:33,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:26:33,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:26:33,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855661169] [2022-01-11 02:26:33,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:26:33,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:26:33,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:26:33,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:26:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:26:33,311 INFO L87 Difference]: Start difference. First operand has 47 states, 40 states have (on average 1.6) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:26:33,328 INFO L93 Difference]: Finished difference Result 91 states and 124 transitions. [2022-01-11 02:26:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:26:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-11 02:26:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:26:33,335 INFO L225 Difference]: With dead ends: 91 [2022-01-11 02:26:33,335 INFO L226 Difference]: Without dead ends: 43 [2022-01-11 02:26:33,337 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 [2022-01-11 02:26:33,341 INFO L933 BasicCegarLoop]: 48 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, 48 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:26:33,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:26:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-11 02:26:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-11 02:26:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 42 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) [2022-01-11 02:26:33,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2022-01-11 02:26:33,369 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2022-01-11 02:26:33,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:26:33,369 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2022-01-11 02:26:33,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:33,370 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2022-01-11 02:26:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 02:26:33,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:26:33,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:26:33,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:26:33,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 02:26:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:26:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash 214474632, now seen corresponding path program 1 times [2022-01-11 02:26:33,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:26:33,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735874210] [2022-01-11 02:26:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:33,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:26:33,421 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:26:33,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146278842] [2022-01-11 02:26:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:33,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:26:33,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:26:33,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:26:33,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:26:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:26:33,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-11 02:26:33,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:26:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:26:37,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:26:37,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:26:37,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735874210] [2022-01-11 02:26:37,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:26:37,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146278842] [2022-01-11 02:26:37,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146278842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:26:37,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:26:37,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 02:26:37,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374672670] [2022-01-11 02:26:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:26:37,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:26:37,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:26:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:26:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:26:37,483 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:26:37,864 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2022-01-11 02:26:37,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 02:26:37,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2022-01-11 02:26:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:26:37,866 INFO L225 Difference]: With dead ends: 53 [2022-01-11 02:26:37,866 INFO L226 Difference]: Without dead ends: 45 [2022-01-11 02:26:37,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:26:37,867 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:26:37,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 119 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-01-11 02:26:37,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-11 02:26:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-01-11 02:26:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-01-11 02:26:37,871 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 19 [2022-01-11 02:26:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:26:37,872 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-01-11 02:26:37,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-01-11 02:26:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 02:26:37,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:26:37,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:26:37,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:26:38,077 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 [2022-01-11 02:26:38,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 02:26:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:26:38,078 INFO L85 PathProgramCache]: Analyzing trace with hash 214511437, now seen corresponding path program 1 times [2022-01-11 02:26:38,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:26:38,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172880771] [2022-01-11 02:26:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:38,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:26:38,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:26:38,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829222409] [2022-01-11 02:26:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:38,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:26:38,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:26:38,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:26:38,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:26:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:26:38,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 02:26:38,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:26:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:26:47,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:26:47,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:26:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172880771] [2022-01-11 02:26:47,784 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:26:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829222409] [2022-01-11 02:26:47,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829222409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:26:47,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:26:47,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 02:26:47,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650386966] [2022-01-11 02:26:47,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:26:47,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 02:26:47,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:26:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 02:26:47,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:26:47,786 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:26:48,320 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2022-01-11 02:26:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 02:26:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 19 [2022-01-11 02:26:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:26:48,322 INFO L225 Difference]: With dead ends: 49 [2022-01-11 02:26:48,322 INFO L226 Difference]: Without dead ends: 47 [2022-01-11 02:26:48,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-01-11 02:26:48,323 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 15 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:26:48,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 164 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-01-11 02:26:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-11 02:26:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-01-11 02:26:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.170731707317073) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-01-11 02:26:48,328 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 19 [2022-01-11 02:26:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:26:48,329 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-01-11 02:26:48,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-01-11 02:26:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 02:26:48,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:26:48,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:26:48,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:26:48,533 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 [2022-01-11 02:26:48,534 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 02:26:48,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:26:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash -12901295, now seen corresponding path program 1 times [2022-01-11 02:26:48,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:26:48,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897267950] [2022-01-11 02:26:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:48,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:26:48,551 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:26:48,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396592722] [2022-01-11 02:26:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:48,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:26:48,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:26:48,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:26:48,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:26:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:26:48,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-11 02:26:48,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:26:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:26:49,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:26:49,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:26:49,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897267950] [2022-01-11 02:26:49,528 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:26:49,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396592722] [2022-01-11 02:26:49,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396592722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:26:49,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:26:49,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 02:26:49,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600671214] [2022-01-11 02:26:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:26:49,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:26:49,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:26:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:26:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:26:49,529 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:26:50,093 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2022-01-11 02:26:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 02:26:50,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 21 [2022-01-11 02:26:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:26:50,094 INFO L225 Difference]: With dead ends: 66 [2022-01-11 02:26:50,094 INFO L226 Difference]: Without dead ends: 64 [2022-01-11 02:26:50,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-11 02:26:50,095 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 152 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:26:50,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 69 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 02:26:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-11 02:26:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-01-11 02:26:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-01-11 02:26:50,100 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 21 [2022-01-11 02:26:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:26:50,101 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-01-11 02:26:50,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:50,101 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-01-11 02:26:50,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 02:26:50,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:26:50,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:26:50,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:26:50,302 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 [2022-01-11 02:26:50,302 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 02:26:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:26:50,303 INFO L85 PathProgramCache]: Analyzing trace with hash 486795572, now seen corresponding path program 1 times [2022-01-11 02:26:50,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:26:50,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246146495] [2022-01-11 02:26:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:50,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:26:50,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:26:50,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709435439] [2022-01-11 02:26:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:50,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:26:50,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:26:50,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:26:50,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:26:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:26:50,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-11 02:26:50,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:26:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:26:51,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:26:51,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:26:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246146495] [2022-01-11 02:26:51,398 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:26:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709435439] [2022-01-11 02:26:51,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709435439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:26:51,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:26:51,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 02:26:51,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176381974] [2022-01-11 02:26:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:26:51,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:26:51,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:26:51,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:26:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:26:51,400 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:51,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:26:51,989 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2022-01-11 02:26:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 02:26:51,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-11 02:26:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:26:51,990 INFO L225 Difference]: With dead ends: 64 [2022-01-11 02:26:51,990 INFO L226 Difference]: Without dead ends: 62 [2022-01-11 02:26:51,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-11 02:26:51,991 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 152 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:26:51,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 67 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 02:26:51,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-11 02:26:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2022-01-11 02:26:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.196078431372549) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-01-11 02:26:51,997 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 23 [2022-01-11 02:26:51,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:26:51,997 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-01-11 02:26:51,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-01-11 02:26:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 02:26:51,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:26:51,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:26:52,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 02:26:52,203 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 [2022-01-11 02:26:52,203 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 02:26:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:26:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash -340852233, now seen corresponding path program 1 times [2022-01-11 02:26:52,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:26:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477924549] [2022-01-11 02:26:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:52,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:26:52,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:26:52,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295957994] [2022-01-11 02:26:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:52,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:26:52,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:26:52,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:26:52,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:26:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:26:52,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-11 02:26:52,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:26:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:26:53,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:26:53,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:26:53,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477924549] [2022-01-11 02:26:53,504 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:26:53,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295957994] [2022-01-11 02:26:53,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295957994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:26:53,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:26:53,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 02:26:53,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937090649] [2022-01-11 02:26:53,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:26:53,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 02:26:53,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:26:53,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 02:26:53,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:26:53,505 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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) [2022-01-11 02:26:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:26:54,393 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-01-11 02:26:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 02:26:54,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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) Word has length 25 [2022-01-11 02:26:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:26:54,394 INFO L225 Difference]: With dead ends: 62 [2022-01-11 02:26:54,395 INFO L226 Difference]: Without dead ends: 60 [2022-01-11 02:26:54,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2022-01-11 02:26:54,395 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 100 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 02:26:54,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 67 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 02:26:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-11 02:26:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2022-01-11 02:26:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 56 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:26:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-01-11 02:26:54,402 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 25 [2022-01-11 02:26:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:26:54,402 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-01-11 02:26:54,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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) [2022-01-11 02:26:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-01-11 02:26:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-11 02:26:54,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:26:54,403 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:26:54,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 02:26:54,606 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 [2022-01-11 02:26:54,609 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 02:26:54,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:26:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1709980677, now seen corresponding path program 1 times [2022-01-11 02:26:54,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:26:54,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201711673] [2022-01-11 02:26:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:54,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:26:54,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:26:54,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096634464] [2022-01-11 02:26:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:26:54,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:26:54,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:26:54,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:26:54,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 02:26:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:26:54,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-11 02:26:54,994 INFO L286 TraceCheckSpWp]: Computing forward predicates...