/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:21:10,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:21:10,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:21:10,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:21:10,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:21:10,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:21:10,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:21:10,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:21:10,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:21:10,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:21:10,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:21:10,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:21:10,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:21:10,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:21:10,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:21:10,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:21:10,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:21:10,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:21:10,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:21:10,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:21:10,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:21:10,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:21:10,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:21:10,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:21:10,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 03:21:10,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 03:21:10,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 03:21:10,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 03:21:10,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 03:21:10,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 03:21:10,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:21:10,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:21:10,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:21:10,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:21:10,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:21:10,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:21:10,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:21:10,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:21:10,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:21:10,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:21:10,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:21:10,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:21:10,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:21:10,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:21:10,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:21:10,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:21:10,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:21:10,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:21:10,998 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:21:10,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:21:10,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:21:10,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:21:10,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:21:11,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:21:11,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:21:11,000 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:21:11,000 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:21:11,000 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:21:11,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:21:11,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:21:11,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:21:11,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:21:11,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:21:11,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:21:11,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:21:11,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:21:11,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:21:11,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:21:11,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:21:11,002 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:21:11,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:21:11,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:21:11,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:21:11,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:21:11,003 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:21:11,003 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:21:11,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:21:11,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:21:11,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:21:11,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:21:11,251 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:21:11,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2f.c [2022-01-11 03:21:11,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb2ca9643/e596d80085e34ab68f60b519654a87a8/FLAG7202159c0 [2022-01-11 03:21:11,652 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:21:11,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn2f.c [2022-01-11 03:21:11,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb2ca9643/e596d80085e34ab68f60b519654a87a8/FLAG7202159c0 [2022-01-11 03:21:12,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb2ca9643/e596d80085e34ab68f60b519654a87a8 [2022-01-11 03:21:12,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:21:12,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:21:12,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:21:12,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:21:12,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:21:12,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8cdc587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12, skipping insertion in model container [2022-01-11 03:21:12,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:21:12,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:21:12,265 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/eqn2f.c[588,601] [2022-01-11 03:21:12,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:21:12,307 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:21:12,322 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/eqn2f.c[588,601] [2022-01-11 03:21:12,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:21:12,347 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:21:12,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12 WrapperNode [2022-01-11 03:21:12,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:21:12,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:21:12,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:21:12,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:21:12,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,402 INFO L137 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-11 03:21:12,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:21:12,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:21:12,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:21:12,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:21:12,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:21:12,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:21:12,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:21:12,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:21:12,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:21:12,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:21:12,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 03:21:12,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 03:21:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:21:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:21:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-11 03:21:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-11 03:21:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:21:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:21:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-11 03:21:12,549 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:21:12,550 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:21:12,733 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:21:12,738 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:21:12,739 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-11 03:21:12,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:21:12 BoogieIcfgContainer [2022-01-11 03:21:12,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:21:12,741 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:21:12,741 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:21:12,742 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:21:12,745 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:21:12" (1/1) ... [2022-01-11 03:21:12,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:21:12 BasicIcfg [2022-01-11 03:21:12,885 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:21:12,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:21:12,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:21:12,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:21:12,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:21:12" (1/4) ... [2022-01-11 03:21:12,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@807fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:21:12, skipping insertion in model container [2022-01-11 03:21:12,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:21:12" (2/4) ... [2022-01-11 03:21:12,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@807fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:21:12, skipping insertion in model container [2022-01-11 03:21:12,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:21:12" (3/4) ... [2022-01-11 03:21:12,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@807fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:21:12, skipping insertion in model container [2022-01-11 03:21:12,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:21:12" (4/4) ... [2022-01-11 03:21:12,893 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2f.cTransformedIcfg [2022-01-11 03:21:12,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:21:12,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:21:12,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:21:12,959 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 03:21:12,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:21:12,972 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) [2022-01-11 03:21:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 03:21:12,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:21:12,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:21:12,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:21:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:21:12,982 INFO L85 PathProgramCache]: Analyzing trace with hash 751161390, now seen corresponding path program 1 times [2022-01-11 03:21:12,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:21:12,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298258900] [2022-01-11 03:21:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:12,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:21:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:21:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:21:13,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:21:13,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298258900] [2022-01-11 03:21:13,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298258900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:21:13,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:21:13,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:21:13,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789410184] [2022-01-11 03:21:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:21:13,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 03:21:13,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:21:13,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 03:21:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:21:13,251 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) [2022-01-11 03:21:13,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:21:13,267 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-01-11 03:21:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 03:21:13,268 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 [2022-01-11 03:21:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:21:13,275 INFO L225 Difference]: With dead ends: 38 [2022-01-11 03:21:13,275 INFO L226 Difference]: Without dead ends: 17 [2022-01-11 03:21:13,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:21:13,280 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 [2022-01-11 03:21:13,281 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] [2022-01-11 03:21:13,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-11 03:21:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-11 03:21:13,305 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) [2022-01-11 03:21:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-11 03:21:13,308 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-01-11 03:21:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:21:13,308 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-11 03:21:13,309 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) [2022-01-11 03:21:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-11 03:21:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 03:21:13,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:21:13,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:21:13,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:21:13,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:21:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:21:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1055369552, now seen corresponding path program 1 times [2022-01-11 03:21:13,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:21:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035613847] [2022-01-11 03:21:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:13,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:21:13,397 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:21:13,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852717415] [2022-01-11 03:21:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:13,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:13,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:21:13,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:21:13,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 03:21:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:21:13,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 03:21:13,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:21:13,756 INFO L353 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-01-11 03:21:13,758 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 [2022-01-11 03:21:13,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:13,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:13,781 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 [2022-01-11 03:21:13,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:13,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:13,809 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 [2022-01-11 03:21:13,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:13,977 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 [2022-01-11 03:21:14,050 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 [2022-01-11 03:21:14,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:14,056 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 [2022-01-11 03:21:14,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 03:21:14,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:14,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:14,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 03:21:14,389 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 03:21:14,389 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 330 treesize of output 155 [2022-01-11 03:21:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:21:14,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:21:14,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:21:14,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035613847] [2022-01-11 03:21:14,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:21:14,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852717415] [2022-01-11 03:21:14,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852717415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:21:14,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:21:14,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 03:21:14,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175873342] [2022-01-11 03:21:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:21:14,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 03:21:14,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:21:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 03:21:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-11 03:21:14,487 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2022-01-11 03:21:16,651 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 [] [2022-01-11 03:21:18,719 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:21:20,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:21:23,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:21:25,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:21:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:21:25,480 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-11 03:21:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 03:21:25,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 [2022-01-11 03:21:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:21:25,483 INFO L225 Difference]: With dead ends: 34 [2022-01-11 03:21:25,483 INFO L226 Difference]: Without dead ends: 32 [2022-01-11 03:21:25,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-11 03:21:25,484 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:21:25,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 37 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 10.9s Time] [2022-01-11 03:21:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-11 03:21:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-11 03:21:25,489 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) [2022-01-11 03:21:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-11 03:21:25,490 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-11 03:21:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:21:25,490 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-11 03:21:25,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2022-01-11 03:21:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-11 03:21:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 03:21:25,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:21:25,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:21:25,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 03:21:25,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:25,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:21:25,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:21:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash 312554478, now seen corresponding path program 1 times [2022-01-11 03:21:25,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:21:25,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586980531] [2022-01-11 03:21:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:25,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:21:25,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:21:25,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073917944] [2022-01-11 03:21:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:25,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:25,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:21:25,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:21:25,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 03:21:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:21:25,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 03:21:25,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:21:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:21:25,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:21:25,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:21:25,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586980531] [2022-01-11 03:21:25,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:21:25,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073917944] [2022-01-11 03:21:25,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073917944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:21:25,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:21:25,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 03:21:25,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959096630] [2022-01-11 03:21:25,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:21:25,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 03:21:25,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:21:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 03:21:25,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:21:25,917 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) [2022-01-11 03:21:27,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:21:30,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:21:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:21:30,428 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-01-11 03:21:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 03:21:30,431 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 [2022-01-11 03:21:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:21:30,432 INFO L225 Difference]: With dead ends: 42 [2022-01-11 03:21:30,432 INFO L226 Difference]: Without dead ends: 33 [2022-01-11 03:21:30,432 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 [2022-01-11 03:21:30,433 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-11 03:21:30,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 27 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-01-11 03:21:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-11 03:21:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2022-01-11 03:21:30,437 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) [2022-01-11 03:21:30,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-11 03:21:30,438 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-01-11 03:21:30,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:21:30,438 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-11 03:21:30,439 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) [2022-01-11 03:21:30,439 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-11 03:21:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 03:21:30,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:21:30,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:21:30,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 03:21:30,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-11 03:21:30,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:21:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:21:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -953919346, now seen corresponding path program 1 times [2022-01-11 03:21:30,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:21:30,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511047861] [2022-01-11 03:21:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:30,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:21:30,699 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:21:30,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758261429] [2022-01-11 03:21:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:30,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:21:30,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:21:30,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 03:21:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:21:30,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 03:21:30,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:21:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:21:30,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:21:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:21:30,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:21:30,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511047861] [2022-01-11 03:21:30,911 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:21:30,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758261429] [2022-01-11 03:21:30,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758261429] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:21:30,911 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:21:30,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-11 03:21:30,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624597928] [2022-01-11 03:21:30,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:21:30,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 03:21:30,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:21:30,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 03:21:30,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-11 03:21:30,913 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) [2022-01-11 03:21:33,510 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 [] [2022-01-11 03:21:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:21:33,780 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-01-11 03:21:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 03:21:33,780 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 [2022-01-11 03:21:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:21:33,781 INFO L225 Difference]: With dead ends: 44 [2022-01-11 03:21:33,781 INFO L226 Difference]: Without dead ends: 37 [2022-01-11 03:21:33,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-11 03:21:33,782 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:21:33,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 48 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-11 03:21:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-11 03:21:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2022-01-11 03:21:33,787 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) [2022-01-11 03:21:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-11 03:21:33,787 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-01-11 03:21:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:21:33,788 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-11 03:21:33,788 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) [2022-01-11 03:21:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-11 03:21:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 03:21:33,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:21:33,788 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:21:33,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 03:21:33,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:33,989 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:21:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:21:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1017934828, now seen corresponding path program 1 times [2022-01-11 03:21:33,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:21:33,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320569660] [2022-01-11 03:21:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:33,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:21:34,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:21:34,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858310748] [2022-01-11 03:21:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:34,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:21:34,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:21:34,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 03:21:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:21:34,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 03:21:34,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:21:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:21:34,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:21:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:21:34,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:21:34,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320569660] [2022-01-11 03:21:34,529 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:21:34,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858310748] [2022-01-11 03:21:34,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858310748] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:21:34,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:21:34,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-01-11 03:21:34,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810611951] [2022-01-11 03:21:34,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:21:34,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 03:21:34,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:21:34,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 03:21:34,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-11 03:21:34,531 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) [2022-01-11 03:21:36,557 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 [] [2022-01-11 03:21:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:21:37,071 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-01-11 03:21:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 03:21:37,072 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 [2022-01-11 03:21:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:21:37,073 INFO L225 Difference]: With dead ends: 40 [2022-01-11 03:21:37,073 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 03:21:37,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-11 03:21:37,074 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-11 03:21:37,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 44 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 60 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-11 03:21:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 03:21:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2022-01-11 03:21:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:21:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-11 03:21:37,078 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-01-11 03:21:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:21:37,079 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-11 03:21:37,079 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) [2022-01-11 03:21:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-11 03:21:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 03:21:37,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:21:37,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:21:37,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 03:21:37,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:37,285 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:21:37,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:21:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash -978045364, now seen corresponding path program 1 times [2022-01-11 03:21:37,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:21:37,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791564012] [2022-01-11 03:21:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:37,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:21:37,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:21:37,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901548702] [2022-01-11 03:21:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:37,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:37,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:21:37,323 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:21:37,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 03:21:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:21:37,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-11 03:21:37,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:21:38,111 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-11 03:21:38,112 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 [2022-01-11 03:21:38,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,126 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 [2022-01-11 03:21:38,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,133 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 [2022-01-11 03:21:38,201 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 [2022-01-11 03:21:38,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,321 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 [2022-01-11 03:21:38,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:21:38,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 03:21:38,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 03:21:38,423 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 246 treesize of output 130 [2022-01-11 03:21:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:21:38,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:21:40,954 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (let ((.cse3 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (.cse4 (mod (+ (* 18446744039349813248 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2147483648) 2)) (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8)) 18446744073709551616))) (+ (* (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse4 4) 18446744073709551616)) 4294967296) (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse4) 18446744073709551616)))))) (or (= (let ((.cse0 (mod (let ((.cse1 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2) 4294967296))) (+ .cse1 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| .cse1) 4294967296) 1)) 4294967296))) (+ (* 18446744069414584320 (mod (div .cse0 2147483648) 2)) .cse0)) .cse2) (< .cse2 0))) is different from true [2022-01-11 03:21:47,366 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)) (let ((.cse0 (let ((.cse3 (let ((.cse5 (mod (+ (* 18446744039349813248 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2147483648) 2)) (* |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| .cse5) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse5 4) 18446744073709551616) v_ArrVal_193))) (.cse4 (mod (+ (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) (* 18446744039349813248 (mod (div |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 2147483648) 2))) 18446744073709551616))) (+ (* 4294967296 (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse4 4) 18446744073709551616))) (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse4) 18446744073709551616)))))) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (< .cse0 0) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)) (= .cse0 (let ((.cse1 (mod (let ((.cse2 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296))) (+ (mod (* .cse2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296) .cse2 1)) 4294967296))) (+ (* 18446744069414584320 (mod (div .cse1 2147483648) 2)) .cse1)))))) is different from false [2022-01-11 03:21:51,081 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)) (let ((.cse0 (let ((.cse3 (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)) (.cse4 (mod (+ (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) (* 18446744039349813248 (mod (div |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 2147483648) 2))) 18446744073709551616))) (+ (* (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse4 4) 18446744073709551616)) 4294967296) (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse4) 18446744073709551616)))))) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= .cse0 (let ((.cse1 (mod (let ((.cse2 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296))) (+ (mod (* .cse2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296) .cse2 1)) 4294967296))) (+ (* 18446744069414584320 (mod (div .cse1 2147483648) 2)) .cse1))) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)) (< .cse0 0)))) is different from false [2022-01-11 03:21:57,553 WARN L838 $PredicateComparison]: unable to prove that (or (not (< (+ c_~N~0Int (* 2 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2147483648))) (+ (* (mod c_~N~0Int 2147483648) 2) |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|))) (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)) (let ((.cse0 (let ((.cse3 (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)) (.cse4 (mod (+ (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) (* 18446744039349813248 (mod (div |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 2147483648) 2))) 18446744073709551616))) (+ (* (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse4 4) 18446744073709551616)) 4294967296) (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse4) 18446744073709551616)))))) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (< .cse0 0) (= (let ((.cse1 (mod (let ((.cse2 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296))) (+ (mod (* .cse2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296) .cse2 1)) 4294967296))) (+ (* 18446744069414584320 (mod (div .cse1 2147483648) 2)) .cse1)) .cse0) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))))) is different from false [2022-01-11 03:21:57,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 03:21:57,650 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 209 treesize of output 201 [2022-01-11 03:21:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-11 03:21:57,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:21:57,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791564012] [2022-01-11 03:21:57,672 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:21:57,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901548702] [2022-01-11 03:21:57,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901548702] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:21:57,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:21:57,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-01-11 03:21:57,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085484341] [2022-01-11 03:21:57,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:21:57,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 03:21:57,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:21:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 03:21:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=85, Unknown=4, NotChecked=84, Total=210 [2022-01-11 03:21:57,676 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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) [2022-01-11 03:22:03,948 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 [] [2022-01-11 03:22:06,057 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (.cse6 (<= (+ (* 18446744069414584320 (mod (div c_~N~0Int 2147483648) 2)) c_~N~0Int) 536870911))) (and (<= 0 c_~N~0Int) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int|) (= (select .cse0 (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) (not (= 3 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (= 1 (select |c_#validInt| 3)) (= (mod (div 1 1) 4294967296) (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt|)) (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (let ((.cse1 (let ((.cse4 (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)) (.cse5 (mod (+ (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) (* 18446744039349813248 (mod (div |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 2147483648) 2))) 18446744073709551616))) (+ (* (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse5 4) 18446744073709551616)) 4294967296) (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse5) 18446744073709551616)))))) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= .cse1 (let ((.cse2 (mod (let ((.cse3 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296))) (+ (mod (* .cse3 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296) .cse3 1)) 4294967296))) (+ (* 18446744069414584320 (mod (div .cse2 2147483648) 2)) .cse2))) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)) (< .cse1 0)))) (< c_~N~0Int 4294967296) .cse6 (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) (or (<= |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 0) (and (<= |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1) .cse6)))) is different from false [2022-01-11 03:22:08,065 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|))) (and (= (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 4) 18446744073709551616)) (mod (div 1 4294967296) 4294967296)) (not (= 3 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (= (mod (div 1 1) 4294967296) (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt|)) (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (let ((.cse1 (let ((.cse4 (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)) (.cse5 (mod (+ (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) (* 18446744039349813248 (mod (div |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 2147483648) 2))) 18446744073709551616))) (+ (* (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse5 4) 18446744073709551616)) 4294967296) (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse5) 18446744073709551616)))))) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= .cse1 (let ((.cse2 (mod (let ((.cse3 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296))) (+ (mod (* .cse3 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296) .cse3 1)) 4294967296))) (+ (* 18446744069414584320 (mod (div .cse2 2147483648) 2)) .cse2))) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)) (< .cse1 0)))) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 0))) is different from false [2022-01-11 03:22:10,071 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|))) (and (= (select .cse0 (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) (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (let ((.cse1 (let ((.cse4 (let ((.cse6 (mod (+ (* 18446744039349813248 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2147483648) 2)) (* |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| .cse6) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse6 4) 18446744073709551616) v_ArrVal_193))) (.cse5 (mod (+ (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) (* 18446744039349813248 (mod (div |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 2147483648) 2))) 18446744073709551616))) (+ (* 4294967296 (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse5 4) 18446744073709551616))) (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse5) 18446744073709551616)))))) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (< .cse1 0) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)) (= .cse1 (let ((.cse2 (mod (let ((.cse3 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296))) (+ (mod (* .cse3 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 4294967296) .cse3 1)) 4294967296))) (+ (* 18446744069414584320 (mod (div .cse2 2147483648) 2)) .cse2)))))) (not (= 3 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (= (mod (div 1 1) 4294967296) (select .cse0 |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 [2022-01-11 03:22:12,247 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 [] [2022-01-11 03:22:12,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:22:12,780 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2022-01-11 03:22:12,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 03:22:12,781 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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 [2022-01-11 03:22:12,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:22:12,782 INFO L225 Difference]: With dead ends: 45 [2022-01-11 03:22:12,782 INFO L226 Difference]: Without dead ends: 43 [2022-01-11 03:22:12,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=77, Invalid=184, Unknown=7, NotChecked=238, Total=506 [2022-01-11 03:22:12,783 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:22:12,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 79 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 52 Invalid, 2 Unknown, 108 Unchecked, 4.8s Time] [2022-01-11 03:22:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-11 03:22:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2022-01-11 03:22:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:22:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-11 03:22:12,790 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-01-11 03:22:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:22:12,790 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-11 03:22:12,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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) [2022-01-11 03:22:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-11 03:22:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 03:22:12,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:22:12,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:22:12,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 03:22:12,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:22:12,992 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:22:12,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:22:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1606655114, now seen corresponding path program 2 times [2022-01-11 03:22:12,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:22:12,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204191491] [2022-01-11 03:22:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:22:12,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:22:13,048 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:22:13,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303710847] [2022-01-11 03:22:13,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 03:22:13,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:22:13,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:22:13,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:22:13,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 03:22:13,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 03:22:13,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:22:13,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 03:22:13,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:22:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:22:13,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:22:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:22:13,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:22:13,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204191491] [2022-01-11 03:22:13,542 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 03:22:13,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303710847] [2022-01-11 03:22:13,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303710847] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:22:13,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 03:22:13,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-11 03:22:13,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902649401] [2022-01-11 03:22:13,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 03:22:13,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 03:22:13,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:22:13,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 03:22:13,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-11 03:22:13,544 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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) [2022-01-11 03:22:15,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:22:17,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:22:20,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:22:22,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:22:22,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:22:22,866 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2022-01-11 03:22:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 03:22:22,867 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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) Word has length 18 [2022-01-11 03:22:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:22:22,868 INFO L225 Difference]: With dead ends: 60 [2022-01-11 03:22:22,868 INFO L226 Difference]: Without dead ends: 51 [2022-01-11 03:22:22,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-01-11 03:22:22,869 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 27 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:22:22,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 55 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 93 Invalid, 4 Unknown, 0 Unchecked, 9.2s Time] [2022-01-11 03:22:22,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-11 03:22:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 28. [2022-01-11 03:22:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:22:22,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-11 03:22:22,876 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2022-01-11 03:22:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:22:22,876 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-11 03:22:22,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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) [2022-01-11 03:22:22,877 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-11 03:22:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 03:22:22,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:22:22,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:22:22,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-11 03:22:23,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:22:23,082 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:22:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:22:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1055018, now seen corresponding path program 3 times [2022-01-11 03:22:23,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:22:23,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488914860] [2022-01-11 03:22:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:22:23,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:22:23,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 03:22:23,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319895281] [2022-01-11 03:22:23,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 03:22:23,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:22:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:22:23,130 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:22:23,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process