/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_NONE.epf -i ../../../trunk/examples/svcomp/array-patterns/array9_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:29:25,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:29:25,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:29:25,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 21:29:25,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 21:29:25,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 21:29:25,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 21:29:25,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 21:29:25,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 21:29:25,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 21:29:25,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 21:29:25,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 21:29:25,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:29:25,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:29:25,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:29:25,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:29:25,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:29:25,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:29:25,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:29:25,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:29:25,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:29:25,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:29:25,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:29:25,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:29:25,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:29:25,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 21:29:25,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 21:29:25,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 21:29:25,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 21:29:25,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 21:29:25,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 21:29:25,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 21:29:25,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 21:29:25,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:29:25,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:29:25,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:29:25,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:29:25,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:29:25,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:29:25,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:29:25,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:29:25,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:29:25,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:29:25,327 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:29:25,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:29:25,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:29:25,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:29:25,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:29:25,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:29:25,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:29:25,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:29:25,328 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:29:25,328 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:29:25,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:29:25,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:29:25,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:29:25,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:29:25,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:29:25,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:29:25,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:29:25,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:29:25,331 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:29:25,331 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:29:25,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:29:25,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:29:25,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:29:25,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:29:25,582 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:29:25,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array9_pattern.c [2022-01-10 21:29:25,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c404767a8/4d641d1ab3c1410cbc271714cd864a48/FLAGd2c1f3b71 [2022-01-10 21:29:25,996 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:29:25,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array9_pattern.c [2022-01-10 21:29:26,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c404767a8/4d641d1ab3c1410cbc271714cd864a48/FLAGd2c1f3b71 [2022-01-10 21:29:26,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c404767a8/4d641d1ab3c1410cbc271714cd864a48 [2022-01-10 21:29:26,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:29:26,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:29:26,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:29:26,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:29:26,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:29:26,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ae616f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26, skipping insertion in model container [2022-01-10 21:29:26,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:29:26,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:29:26,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array9_pattern.c[1352,1365] [2022-01-10 21:29:26,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:29:26,212 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:29:26,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array9_pattern.c[1352,1365] [2022-01-10 21:29:26,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:29:26,256 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:29:26,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26 WrapperNode [2022-01-10 21:29:26,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:29:26,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:29:26,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:29:26,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:29:26,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,294 INFO L137 Inliner]: procedures = 18, calls = 23, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 86 [2022-01-10 21:29:26,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:29:26,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:29:26,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:29:26,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:29:26,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:29:26,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:29:26,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:29:26,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:29:26,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:29:26,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:29:26,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 21:29:26,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 21:29:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:29:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:29:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 21:29:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 21:29:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:29:26,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:29:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 21:29:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 21:29:26,472 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:29:26,473 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:29:26,729 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:29:26,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:29:26,733 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 21:29:26,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:29:26 BoogieIcfgContainer [2022-01-10 21:29:26,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:29:26,735 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:29:26,735 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:29:26,737 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:29:26,739 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:29:26" (1/1) ... [2022-01-10 21:29:26,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:29:26 BasicIcfg [2022-01-10 21:29:26,810 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:29:26,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:29:26,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:29:26,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:29:26,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:29:26" (1/4) ... [2022-01-10 21:29:26,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cad417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:29:26, skipping insertion in model container [2022-01-10 21:29:26,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:29:26" (2/4) ... [2022-01-10 21:29:26,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cad417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:29:26, skipping insertion in model container [2022-01-10 21:29:26,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:29:26" (3/4) ... [2022-01-10 21:29:26,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cad417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:29:26, skipping insertion in model container [2022-01-10 21:29:26,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:29:26" (4/4) ... [2022-01-10 21:29:26,815 INFO L111 eAbstractionObserver]: Analyzing ICFG array9_pattern.cTransformedIcfg [2022-01-10 21:29:26,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:29:26,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:29:26,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:29:26,854 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 21:29:26,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:29:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 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) [2022-01-10 21:29:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 21:29:26,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:29:26,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:29:26,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:29:26,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:29:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -281861135, now seen corresponding path program 1 times [2022-01-10 21:29:26,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:29:26,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604438534] [2022-01-10 21:29:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:29:26,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:29:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:29:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:29:26,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:29:26,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604438534] [2022-01-10 21:29:26,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604438534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:29:26,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:29:26,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:29:26,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861621777] [2022-01-10 21:29:26,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:29:26,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:29:26,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:29:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:29:27,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:29:27,020 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:29:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:29:27,033 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2022-01-10 21:29:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:29:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-01-10 21:29:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:29:27,040 INFO L225 Difference]: With dead ends: 45 [2022-01-10 21:29:27,040 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 21:29:27,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:29:27,044 INFO L933 BasicCegarLoop]: 27 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, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:29:27,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:29:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 21:29:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 21:29:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:29:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-01-10 21:29:27,071 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2022-01-10 21:29:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:29:27,072 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-01-10 21:29:27,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:29:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-01-10 21:29:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 21:29:27,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:29:27,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:29:27,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:29:27,075 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:29:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:29:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1228398551, now seen corresponding path program 1 times [2022-01-10 21:29:27,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:29:27,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338627341] [2022-01-10 21:29:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:29:27,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:29:27,154 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:29:27,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836806109] [2022-01-10 21:29:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:29:27,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:29:27,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:29:27,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:29:27,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 21:29:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:29:27,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 21:29:27,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:29:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:29:27,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:29:27,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:29:27,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338627341] [2022-01-10 21:29:27,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:29:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836806109] [2022-01-10 21:29:27,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836806109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:29:27,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:29:27,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 21:29:27,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067852923] [2022-01-10 21:29:27,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:29:27,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 21:29:27,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:29:27,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 21:29:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:29:27,775 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:29:29,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 21:29:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:29:30,157 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2022-01-10 21:29:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 21:29:30,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 21:29:30,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:29:30,159 INFO L225 Difference]: With dead ends: 49 [2022-01-10 21:29:30,159 INFO L226 Difference]: Without dead ends: 35 [2022-01-10 21:29:30,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 21:29:30,160 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:29:30,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 29 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 21:29:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-10 21:29:30,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2022-01-10 21:29:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:29:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-01-10 21:29:30,165 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 17 [2022-01-10 21:29:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:29:30,165 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-01-10 21:29:30,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:29:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-01-10 21:29:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 21:29:30,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:29:30,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:29:30,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 21:29:30,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:29:30,370 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:29:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:29:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1773842804, now seen corresponding path program 1 times [2022-01-10 21:29:30,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:29:30,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760912041] [2022-01-10 21:29:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:29:30,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:29:30,421 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:29:30,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804624524] [2022-01-10 21:29:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:29:30,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:29:30,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:29:30,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:29:30,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 21:29:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:29:30,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 21:29:30,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:29:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:29:30,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:29:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:29:31,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:29:31,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760912041] [2022-01-10 21:29:31,089 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:29:31,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804624524] [2022-01-10 21:29:31,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804624524] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 21:29:31,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 21:29:31,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-01-10 21:29:31,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349545781] [2022-01-10 21:29:31,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:29:31,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 21:29:31,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:29:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 21:29:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 21:29:31,090 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2022-01-10 21:29:33,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 21:29:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:29:33,377 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-01-10 21:29:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 21:29:33,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 [2022-01-10 21:29:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:29:33,380 INFO L225 Difference]: With dead ends: 30 [2022-01-10 21:29:33,380 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 21:29:33,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 21:29:33,381 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:29:33,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 25 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 21:29:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 21:29:33,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2022-01-10 21:29:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:29:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-01-10 21:29:33,384 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 19 [2022-01-10 21:29:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:29:33,385 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-01-10 21:29:33,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2022-01-10 21:29:33,385 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-01-10 21:29:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 21:29:33,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:29:33,385 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] [2022-01-10 21:29:33,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 21:29:33,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 21:29:33,590 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:29:33,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:29:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash -213227528, now seen corresponding path program 1 times [2022-01-10 21:29:33,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:29:33,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927447172] [2022-01-10 21:29:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:29:33,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:29:33,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:29:33,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422395675] [2022-01-10 21:29:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:29:33,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:29:33,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:29:33,636 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:29:33,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 21:29:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:29:34,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 62 conjunts are in the unsatisfiable core [2022-01-10 21:29:34,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:29:35,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 21:29:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 21:29:36,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-01-10 21:29:36,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-01-10 21:29:40,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2022-01-10 21:29:41,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 21:29:41,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 21:29:42,026 INFO L353 Elim1Store]: treesize reduction 67, result has 40.7 percent of original size [2022-01-10 21:29:42,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 106