/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_BITWISE.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:53:23,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:53:23,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:53:23,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 09:53:23,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 09:53:23,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 09:53:23,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 09:53:23,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 09:53:23,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 09:53:23,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 09:53:23,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 09:53:23,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 09:53:23,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:53:23,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:53:23,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:53:23,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:53:23,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:53:23,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:53:23,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:53:23,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:53:23,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:53:23,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:53:23,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:53:23,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:53:23,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 09:53:23,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 09:53:23,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 09:53:23,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 09:53:23,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 09:53:23,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 09:53:23,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:53:23,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:53:23,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:53:23,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:53:23,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:53:23,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:53:23,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:53:23,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:53:23,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:53:23,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:53:23,501 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:53:23,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:53:23,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:53:23,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:53:23,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:53:23,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:53:23,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:53:23,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:53:23,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:53:23,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:53:23,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:53:23,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:53:23,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:53:23,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:53:23,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:53:23,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:53:23,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:53:23,505 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:53:23,505 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:53:23,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:53:23,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:53:23,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:53:23,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:53:23,668 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:53:23,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2.c [2022-01-10 09:53:23,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08db17d42/fe0d4651f36242e080d0e8f023bcdb62/FLAG0185b7cfb [2022-01-10 09:53:24,060 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:53:24,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn2.c [2022-01-10 09:53:24,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08db17d42/fe0d4651f36242e080d0e8f023bcdb62/FLAG0185b7cfb [2022-01-10 09:53:24,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08db17d42/fe0d4651f36242e080d0e8f023bcdb62 [2022-01-10 09:53:24,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:53:24,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:53:24,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:53:24,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:53:24,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:53:24,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55dd2d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24, skipping insertion in model container [2022-01-10 09:53:24,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:53:24,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:53:24,238 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-fpi/eqn2.c[587,600] [2022-01-10 09:53:24,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:53:24,267 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:53:24,275 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-fpi/eqn2.c[587,600] [2022-01-10 09:53:24,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:53:24,289 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:53:24,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24 WrapperNode [2022-01-10 09:53:24,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:53:24,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:53:24,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:53:24,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:53:24,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,312 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-01-10 09:53:24,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:53:24,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:53:24,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:53:24,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:53:24,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:53:24,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:53:24,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:53:24,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:53:24,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:53:24,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:53:24,356 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 09:53:24,358 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 09:53:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:53:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:53:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 09:53:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 09:53:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:53:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:53:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 09:53:24,441 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:53:24,442 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:53:24,602 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:53:24,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:53:24,606 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 09:53:24,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:53:24 BoogieIcfgContainer [2022-01-10 09:53:24,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:53:24,607 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:53:24,608 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:53:24,608 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:53:24,610 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:53:24" (1/1) ... [2022-01-10 09:53:24,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:53:24 BasicIcfg [2022-01-10 09:53:24,701 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:53:24,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:53:24,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:53:24,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:53:24,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:53:24" (1/4) ... [2022-01-10 09:53:24,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a06ddb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:53:24, skipping insertion in model container [2022-01-10 09:53:24,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:24" (2/4) ... [2022-01-10 09:53:24,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a06ddb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:53:24, skipping insertion in model container [2022-01-10 09:53:24,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:53:24" (3/4) ... [2022-01-10 09:53:24,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a06ddb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:53:24, skipping insertion in model container [2022-01-10 09:53:24,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:53:24" (4/4) ... [2022-01-10 09:53:24,706 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2.cTransformedIcfg [2022-01-10 09:53:24,709 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:53:24,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 09:53:24,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:53:24,742 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 09:53:24,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 09:53:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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 09:53:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 09:53:24,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:53:24,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:53:24,755 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:53:24,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:53:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash 751161390, now seen corresponding path program 1 times [2022-01-10 09:53:24,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:53:24,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204566465] [2022-01-10 09:53:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:24,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:53:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:53:24,951 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 09:53:24,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:53:24,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204566465] [2022-01-10 09:53:24,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204566465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:53:24,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:53:24,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:53:24,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603912447] [2022-01-10 09:53:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:53:24,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:53:24,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:53:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:53:24,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:53:24,988 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 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 09:53:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:53:25,000 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-01-10 09:53:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:53:25,002 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 09:53:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:53:25,007 INFO L225 Difference]: With dead ends: 38 [2022-01-10 09:53:25,007 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 09:53:25,009 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 09:53:25,013 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:53:25,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:53:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 09:53:25,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 09:53:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 09:53:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 09:53:25,039 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-01-10 09:53:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:53:25,040 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 09:53:25,041 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 09:53:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 09:53:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 09:53:25,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:53:25,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:53:25,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:53:25,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:53:25,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:53:25,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1055369552, now seen corresponding path program 1 times [2022-01-10 09:53:25,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:53:25,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518789149] [2022-01-10 09:53:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:25,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:53:25,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:53:25,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568320726] [2022-01-10 09:53:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:25,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:53:25,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:53:25,124 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 09:53:25,149 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 09:53:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:53:25,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 09:53:25,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:53:25,370 INFO L353 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-01-10 09:53:25,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 81 [2022-01-10 09:53:25,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:25,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:25,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 09:53:25,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:25,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:25,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 09:53:25,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:25,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-01-10 09:53:25,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-01-10 09:53:25,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:25,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-01-10 09:53:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:25,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:53:25,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:53:25,821 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 09:53:25,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 79 [2022-01-10 09:53:25,846 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 09:53:25,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:53:25,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:53:25,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518789149] [2022-01-10 09:53:25,847 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:53:25,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568320726] [2022-01-10 09:53:25,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568320726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:53:25,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:53:25,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:53:25,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025382295] [2022-01-10 09:53:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:53:25,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:53:25,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:53:25,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:53:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:53:25,849 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 09:53:28,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:30,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:32,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:53:33,941 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-10 09:53:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 09:53:33,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 09:53:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:53:33,944 INFO L225 Difference]: With dead ends: 34 [2022-01-10 09:53:33,944 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 09:53:33,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:53:33,945 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:53:33,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 53 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2022-01-10 09:53:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 09:53:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-10 09:53:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 09:53:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 09:53:33,950 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 09:53:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:53:33,950 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 09:53:33,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 09:53:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 09:53:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:53:33,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:53:33,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:53:33,957 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 09:53:34,154 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 09:53:34,155 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:53:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:53:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash 312554478, now seen corresponding path program 1 times [2022-01-10 09:53:34,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:53:34,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706264503] [2022-01-10 09:53:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:34,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:53:34,200 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:53:34,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153161277] [2022-01-10 09:53:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:34,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:53:34,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:53:34,204 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 09:53:34,205 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 09:53:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:53:34,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 09:53:34,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:53:34,335 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 09:53:34,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:53:34,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:53:34,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706264503] [2022-01-10 09:53:34,335 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:53:34,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153161277] [2022-01-10 09:53:34,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153161277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:53:34,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:53:34,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:53:34,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825226052] [2022-01-10 09:53:34,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:53:34,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:53:34,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:53:34,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:53:34,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:53:34,337 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:53:36,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:36,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:53:36,817 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-01-10 09:53:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:53:36,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 09:53:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:53:36,819 INFO L225 Difference]: With dead ends: 41 [2022-01-10 09:53:36,819 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 09:53:36,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:53:36,820 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 09:53:36,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 09:53:36,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 09:53:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-10 09:53:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 09:53:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-10 09:53:36,824 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-01-10 09:53:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:53:36,824 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-10 09:53:36,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:53:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-10 09:53:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:53:36,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:53:36,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:53:36,840 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 09:53:37,034 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 09:53:37,034 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:53:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:53:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash -953919346, now seen corresponding path program 1 times [2022-01-10 09:53:37,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:53:37,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525141650] [2022-01-10 09:53:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:37,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:53:37,083 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:53:37,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217779453] [2022-01-10 09:53:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:37,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:53:37,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:53:37,087 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 09:53:37,112 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 09:53:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:53:37,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 09:53:37,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:53:37,245 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 09:53:37,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:53:44,253 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 09:53:44,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:53:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525141650] [2022-01-10 09:53:44,254 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:53:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217779453] [2022-01-10 09:53:44,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217779453] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:53:44,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:53:44,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 09:53:44,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274986900] [2022-01-10 09:53:44,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:53:44,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 09:53:44,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:53:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 09:53:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:53:44,255 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:53:46,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:53:46,882 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-01-10 09:53:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 09:53:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 09:53:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:53:46,884 INFO L225 Difference]: With dead ends: 32 [2022-01-10 09:53:46,884 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 09:53:46,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:53:46,884 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 09:53:46,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 1 Unknown, 10 Unchecked, 2.5s Time] [2022-01-10 09:53:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 09:53:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-01-10 09:53:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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 09:53:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-10 09:53:46,887 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-01-10 09:53:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:53:46,887 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-10 09:53:46,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:53:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-10 09:53:46,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 09:53:46,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:53:46,888 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:53:46,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 09:53:47,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:53:47,096 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:53:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:53:47,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1017934828, now seen corresponding path program 1 times [2022-01-10 09:53:47,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:53:47,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989947882] [2022-01-10 09:53:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:47,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:53:47,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:53:47,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744169156] [2022-01-10 09:53:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:47,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:53:47,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:53:47,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:53:47,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 09:53:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:53:47,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 09:53:47,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:53:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:53:47,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:53:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:53:49,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:53:49,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989947882] [2022-01-10 09:53:49,044 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:53:49,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744169156] [2022-01-10 09:53:49,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744169156] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:53:49,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:53:49,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-01-10 09:53:49,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497979341] [2022-01-10 09:53:49,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:53:49,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 09:53:49,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:53:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 09:53:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 09:53:49,048 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:53:51,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:53,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:55,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:57,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:53:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:53:57,933 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-01-10 09:53:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 09:53:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 09:53:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:53:57,934 INFO L225 Difference]: With dead ends: 34 [2022-01-10 09:53:57,934 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 09:53:57,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 09:53:57,935 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-01-10 09:53:57,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 45 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 4 Unknown, 10 Unchecked, 8.9s Time] [2022-01-10 09:53:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 09:53:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-01-10 09:53:57,937 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) [2022-01-10 09:53:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-10 09:53:57,938 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-01-10 09:53:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:53:57,938 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-10 09:53:57,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:53:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-10 09:53:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 09:53:57,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:53:57,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:53:57,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 09:53:58,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:53:58,143 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:53:58,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:53:58,143 INFO L85 PathProgramCache]: Analyzing trace with hash -978045364, now seen corresponding path program 1 times [2022-01-10 09:53:58,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:53:58,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676016852] [2022-01-10 09:53:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:58,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:53:58,163 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:53:58,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640821682] [2022-01-10 09:53:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:53:58,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:53:58,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:53:58,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:53:58,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 09:53:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:53:58,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 09:53:58,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:53:58,496 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 09:53:58,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-01-10 09:53:58,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-10 09:53:58,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 09:53:58,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-01-10 09:53:58,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 55 [2022-01-10 09:53:58,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:53:58,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:53:58,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:53:58,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 73 [2022-01-10 09:53:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:53:58,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:54:12,899 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= (let ((.cse0 (let ((.cse2 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8) 18446744073709551616))) (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2 4) 18446744073709551616) v_ArrVal_193))) (.cse1 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (* 4294967296 (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616))) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)))) (mod (let ((.cse3 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse3) 18446744073709551616) 1 .cse3)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) is different from false [2022-01-10 09:54:15,277 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= (let ((.cse0 (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse1 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (* (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616)) 4294967296) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)))) (mod (let ((.cse2 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse2) 18446744073709551616) 1 .cse2)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) is different from false [2022-01-10 09:54:18,844 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (= (mod (let ((.cse0 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse0) 18446744073709551616) 1 .cse0)) 18446744073709551616) (let ((.cse1 (store (store (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt| v_ArrVal_191) |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse2 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (select .cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2) 18446744073709551616)) (* (select .cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2 4) 18446744073709551616)) 4294967296)))) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) is different from false [2022-01-10 09:54:18,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:54:18,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 84 treesize of output 80 [2022-01-10 09:54:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-10 09:54:18,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:54:18,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676016852] [2022-01-10 09:54:18,903 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:54:18,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640821682] [2022-01-10 09:54:18,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640821682] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:54:18,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:54:18,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-01-10 09:54:18,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488374623] [2022-01-10 09:54:18,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:54:18,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 09:54:18,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:54:18,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 09:54:18,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=67, Unknown=4, NotChecked=54, Total=156 [2022-01-10 09:54:18,905 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:54:21,097 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|))) (and (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| 1)) (= (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 4) 18446744073709551616)) (mod (div 1 4294967296) 4294967296)) (= (mod (div 1 1) 4294967296) (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt|)) (= (select |c_#validInt| 1) 1) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 0) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (= (mod (let ((.cse1 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse1) 18446744073709551616) 1 .cse1)) 18446744073709551616) (let ((.cse2 (store (store (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt| v_ArrVal_191) |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse3 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (select .cse2 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse3) 18446744073709551616)) (* (select .cse2 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse3 4) 18446744073709551616)) 4294967296)))) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))))) is different from false [2022-01-10 09:54:23,105 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|))) (and (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= (let ((.cse0 (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse1 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (* (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616)) 4294967296) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)))) (mod (let ((.cse2 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse2) 18446744073709551616) 1 .cse2)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| 1)) (= (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 4) 18446744073709551616)) (mod (div 1 4294967296) 4294967296)) (= (mod (div 1 1) 4294967296) (select .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 0))) is different from false [2022-01-10 09:54:25,111 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|))) (and (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= (let ((.cse0 (let ((.cse2 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8) 18446744073709551616))) (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2 4) 18446744073709551616) v_ArrVal_193))) (.cse1 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (* 4294967296 (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616))) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)))) (mod (let ((.cse3 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse3) 18446744073709551616) 1 .cse3)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| 1)) (= (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 4) 18446744073709551616)) (mod (div 1 4294967296) 4294967296)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1) (= (mod (div 1 1) 4294967296) (select .cse4 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 0))) is different from false [2022-01-10 09:54:27,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:54:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:54:27,281 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-01-10 09:54:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 09:54:27,282 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 09:54:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:54:27,282 INFO L225 Difference]: With dead ends: 33 [2022-01-10 09:54:27,282 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 09:54:27,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=44, Invalid=83, Unknown=7, NotChecked=138, Total=272 [2022-01-10 09:54:27,284 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 09:54:27,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 62 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 1 Unknown, 62 Unchecked, 2.3s Time] [2022-01-10 09:54:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 09:54:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-01-10 09:54:27,287 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) [2022-01-10 09:54:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-10 09:54:27,287 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-01-10 09:54:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:54:27,287 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-10 09:54:27,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:54:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-10 09:54:27,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 09:54:27,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:54:27,288 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:54:27,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 09:54:27,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:54:27,496 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:54:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:54:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1606655114, now seen corresponding path program 2 times [2022-01-10 09:54:27,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:54:27,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477319823] [2022-01-10 09:54:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:27,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:54:27,529 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:54:27,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119362576] [2022-01-10 09:54:27,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:54:27,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:54:27,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:54:27,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:54:27,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 09:54:27,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 09:54:27,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:54:27,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 09:54:27,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:54:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:54:27,801 INFO L328 TraceCheckSpWp]: Computing backward predicates...