/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/loops/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:58:54,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:58:54,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:58:54,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:58:54,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:58:54,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:58:54,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:58:54,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:58:54,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:58:54,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:58:54,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:58:54,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:58:54,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:58:54,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:58:54,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:58:54,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:58:54,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:58:54,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:58:54,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:58:54,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:58:54,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:58:54,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:58:54,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:58:54,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:58:54,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:58:54,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:58:54,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:58:54,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:58:54,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:58:54,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:58:54,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:58:54,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:58:54,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:58:54,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:58:54,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:58:54,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:58:54,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:58:54,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:58:54,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:58:54,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:58:54,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:58:54,333 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 01:58:54,352 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:58:54,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:58:54,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:58:54,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:58:54,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:58:54,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:58:54,354 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:58:54,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:58:54,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:58:54,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:58:54,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:58:54,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:58:54,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:58:54,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:58:54,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:58:54,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:58:54,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:58:54,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:58:54,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:58:54,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:58:54,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:58:54,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:58:54,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:58:54,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:58:54,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:58:54,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:58:54,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:58:54,357 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:58:54,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:58:54,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:58:54,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:58:54,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:58:54,358 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:58:54,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:58:54,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:58:54,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:58:54,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:58:54,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:58:54,554 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:58:54,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2022-01-11 01:58:54,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22eb5113/7dd030d98d4d4ba391806ee5d05292a1/FLAG9f6a38b1e [2022-01-11 01:58:54,921 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:58:54,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2022-01-11 01:58:54,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22eb5113/7dd030d98d4d4ba391806ee5d05292a1/FLAG9f6a38b1e [2022-01-11 01:58:55,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22eb5113/7dd030d98d4d4ba391806ee5d05292a1 [2022-01-11 01:58:55,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:58:55,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:58:55,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:58:55,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:58:55,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:58:55,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a099c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55, skipping insertion in model container [2022-01-11 01:58:55,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:58:55,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:58:55,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i[808,821] [2022-01-11 01:58:55,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:58:55,548 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:58:55,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i[808,821] [2022-01-11 01:58:55,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:58:55,585 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:58:55,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55 WrapperNode [2022-01-11 01:58:55,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:58:55,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:58:55,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:58:55,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:58:55,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,616 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2022-01-11 01:58:55,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:58:55,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:58:55,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:58:55,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:58:55,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:58:55,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:58:55,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:58:55,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:58:55,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:58:55,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:58:55,672 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 01:58:55,673 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 01:58:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:58:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:58:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:58:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:58:55,746 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:58:55,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:58:55,835 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:58:55,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:58:55,840 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 01:58:55,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:58:55 BoogieIcfgContainer [2022-01-11 01:58:55,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:58:55,842 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:58:55,842 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:58:55,856 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:58:55,858 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:58:55" (1/1) ... [2022-01-11 01:58:55,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:58:55 BasicIcfg [2022-01-11 01:58:55,900 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:58:55,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:58:55,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:58:55,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:58:55,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:58:55" (1/4) ... [2022-01-11 01:58:55,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b473a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:58:55, skipping insertion in model container [2022-01-11 01:58:55,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:58:55" (2/4) ... [2022-01-11 01:58:55,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b473a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:58:55, skipping insertion in model container [2022-01-11 01:58:55,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:58:55" (3/4) ... [2022-01-11 01:58:55,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b473a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:58:55, skipping insertion in model container [2022-01-11 01:58:55,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:58:55" (4/4) ... [2022-01-11 01:58:55,907 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-1.iTransformedIcfg [2022-01-11 01:58:55,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:58:55,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 01:58:55,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:58:55,950 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 01:58:55,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 01:58:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:58:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-11 01:58:55,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:58:55,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-11 01:58:55,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:58:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:58:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1953496264, now seen corresponding path program 1 times [2022-01-11 01:58:55,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:58:55,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673849706] [2022-01-11 01:58:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:58:55,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:58:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:58:56,088 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 01:58:56,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:58:56,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673849706] [2022-01-11 01:58:56,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673849706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:58:56,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:58:56,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:58:56,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288538938] [2022-01-11 01:58:56,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:58:56,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 01:58:56,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:58:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 01:58:56,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 01:58:56,120 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 01:58:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:58:56,131 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-01-11 01:58:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 01:58:56,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-01-11 01:58:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:58:56,138 INFO L225 Difference]: With dead ends: 21 [2022-01-11 01:58:56,138 INFO L226 Difference]: Without dead ends: 9 [2022-01-11 01:58:56,141 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 01:58:56,146 INFO L933 BasicCegarLoop]: 14 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, 14 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 01:58:56,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:58:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-01-11 01:58:56,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-01-11 01:58:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:58:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-01-11 01:58:56,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-01-11 01:58:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:58:56,178 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-01-11 01:58:56,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 01:58:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-01-11 01:58:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-11 01:58:56,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:58:56,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-11 01:58:56,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:58:56,181 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:58:56,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:58:56,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1953526055, now seen corresponding path program 1 times [2022-01-11 01:58:56,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:58:56,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487546911] [2022-01-11 01:58:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:58:56,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:58:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:58:56,257 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 01:58:56,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:58:56,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487546911] [2022-01-11 01:58:56,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487546911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:58:56,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:58:56,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 01:58:56,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380772301] [2022-01-11 01:58:56,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:58:56,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 01:58:56,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:58:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 01:58:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 01:58:56,260 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 01:58:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:58:56,280 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-01-11 01:58:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 01:58:56,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-01-11 01:58:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:58:56,281 INFO L225 Difference]: With dead ends: 16 [2022-01-11 01:58:56,281 INFO L226 Difference]: Without dead ends: 12 [2022-01-11 01:58:56,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:58:56,283 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:58:56,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:58:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-11 01:58:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-11 01:58:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2022-01-11 01:58:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-01-11 01:58:56,286 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2022-01-11 01:58:56,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:58:56,287 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-01-11 01:58:56,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 01:58:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-01-11 01:58:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 01:58:56,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:58:56,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:58:56,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:58:56,288 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:58:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:58:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1605626063, now seen corresponding path program 1 times [2022-01-11 01:58:56,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:58:56,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122817286] [2022-01-11 01:58:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:58:56,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:58:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:58:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:58:56,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:58:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122817286] [2022-01-11 01:58:56,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122817286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:58:56,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878144564] [2022-01-11 01:58:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:58:56,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:58:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:58:56,388 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 01:58:56,389 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 01:58:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:58:56,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-11 01:58:56,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:58:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:58:56,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:58:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:58:56,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878144564] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:58:56,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:58:56,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 7] total 12 [2022-01-11 01:58:56,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847087818] [2022-01-11 01:58:56,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:58:56,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 01:58:56,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:58:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 01:58:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-11 01:58:56,785 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 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 01:58:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:58:57,120 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-01-11 01:58:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 01:58:57,121 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 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 9 [2022-01-11 01:58:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:58:57,121 INFO L225 Difference]: With dead ends: 33 [2022-01-11 01:58:57,121 INFO L226 Difference]: Without dead ends: 19 [2022-01-11 01:58:57,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-01-11 01:58:57,123 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:58:57,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 19 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:58:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-11 01:58:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-11 01:58:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 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 01:58:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-11 01:58:57,128 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-01-11 01:58:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:58:57,128 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-11 01:58:57,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 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 01:58:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-11 01:58:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 01:58:57,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:58:57,129 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:58:57,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 01:58:57,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:58:57,330 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:58:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:58:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1355544634, now seen corresponding path program 1 times [2022-01-11 01:58:57,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:58:57,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215569272] [2022-01-11 01:58:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:58:57,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:58:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:58:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:58:57,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:58:57,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215569272] [2022-01-11 01:58:57,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215569272] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:58:57,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846483995] [2022-01-11 01:58:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:58:57,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:58:57,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:58:57,511 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 01:58:57,549 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 01:58:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:58:57,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-11 01:58:57,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:59:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:59:02,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:59:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:59:02,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846483995] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:59:02,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:59:02,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2022-01-11 01:59:02,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026981588] [2022-01-11 01:59:02,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:59:02,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-11 01:59:02,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:59:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-11 01:59:02,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=188, Unknown=1, NotChecked=0, Total=272 [2022-01-11 01:59:02,997 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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 01:59:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:59:15,405 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-01-11 01:59:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 01:59:15,406 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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) Word has length 18 [2022-01-11 01:59:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:59:15,408 INFO L225 Difference]: With dead ends: 43 [2022-01-11 01:59:15,408 INFO L226 Difference]: Without dead ends: 34 [2022-01-11 01:59:15,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=136, Invalid=282, Unknown=2, NotChecked=0, Total=420 [2022-01-11 01:59:15,409 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 01:59:15,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 82 Invalid, 0 Unknown, 58 Unchecked, 0.4s Time] [2022-01-11 01:59:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-11 01:59:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-01-11 01:59:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:59:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-11 01:59:15,417 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2022-01-11 01:59:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:59:15,417 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-11 01:59:15,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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 01:59:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-11 01:59:15,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 01:59:15,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:59:15,418 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-01-11 01:59:15,444 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 01:59:15,619 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,SelfDestructingSolverStorable3 [2022-01-11 01:59:15,619 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:59:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:59:15,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1131968199, now seen corresponding path program 2 times [2022-01-11 01:59:15,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:59:15,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267456468] [2022-01-11 01:59:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:59:15,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:59:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:59:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:59:15,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:59:15,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267456468] [2022-01-11 01:59:15,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267456468] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:59:15,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881211800] [2022-01-11 01:59:15,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 01:59:15,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:59:15,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:59:15,708 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 01:59:15,709 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 01:59:15,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 01:59:15,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 01:59:15,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-11 01:59:15,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:59:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:59:16,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:59:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:59:16,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881211800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:59:16,434 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:59:16,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-11 01:59:16,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836859994] [2022-01-11 01:59:16,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:59:16,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 01:59:16,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:59:16,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 01:59:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-11 01:59:16,436 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:59:18,518 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1))) (let ((.cse0 (* (mod 8 2147483648) 2)) (.cse3 (mod .cse4 4294967296))) (and (or (<= |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| (+ 3 (* 4294967296 (div |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2147483648)))) (not (<= (+ 8 (* 2 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2147483648))) (+ .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|)))) (let ((.cse2 (+ 1 .cse3))) (let ((.cse1 (mod .cse2 4294967296))) (or (<= .cse1 (+ 3 (* (div .cse1 2147483648) 4294967296))) (not (<= (+ 8 (* 2 (mod .cse2 2147483648))) (+ .cse0 .cse1)))))) (or (not (<= (+ (* 2 (mod .cse4 2147483648)) 8) (+ .cse0 .cse3))) (<= .cse3 (+ 3 (* (div .cse3 2147483648) 4294967296))))))) is different from false [2022-01-11 01:59:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:59:18,523 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-01-11 01:59:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 01:59:18,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-11 01:59:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:59:18,524 INFO L225 Difference]: With dead ends: 44 [2022-01-11 01:59:18,524 INFO L226 Difference]: Without dead ends: 29 [2022-01-11 01:59:18,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=47, Invalid=88, Unknown=1, NotChecked=20, Total=156 [2022-01-11 01:59:18,525 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:59:18,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 18 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 38 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2022-01-11 01:59:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-11 01:59:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-11 01:59:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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) [2022-01-11 01:59:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-11 01:59:18,531 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2022-01-11 01:59:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:59:18,532 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-11 01:59:18,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:59:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-11 01:59:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 01:59:18,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:59:18,533 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1] [2022-01-11 01:59:18,550 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 01:59:18,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:59:18,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:59:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:59:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1178082545, now seen corresponding path program 3 times [2022-01-11 01:59:18,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:59:18,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552791702] [2022-01-11 01:59:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:59:18,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:59:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:59:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:59:18,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:59:18,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552791702] [2022-01-11 01:59:18,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552791702] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:59:18,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095747447] [2022-01-11 01:59:18,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 01:59:18,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:59:18,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:59:18,940 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 01:59:18,942 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 01:59:19,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-11 01:59:19,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 01:59:19,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-11 01:59:19,198 INFO L286 TraceCheckSpWp]: Computing forward predicates...