/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_LAZY.epf -i ../../../trunk/examples/svcomp/array-multidimensional/copy-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:35:06,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:35:06,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:35:06,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 15:35:06,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 15:35:06,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 15:35:06,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 15:35:06,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 15:35:06,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 15:35:06,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 15:35:06,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 15:35:06,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 15:35:06,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:35:06,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:35:06,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:35:06,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:35:06,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:35:06,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:35:06,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:35:06,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:35:06,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:35:06,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:35:06,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:35:06,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:35:06,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 15:35:06,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 15:35:06,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 15:35:06,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 15:35:06,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 15:35:06,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 15:35:06,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 15:35:06,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 15:35:06,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 15:35:06,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:35:06,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:35:06,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:35:06,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:35:06,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:35:06,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:35:06,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:35:06,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:35:06,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:35:06,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:35:06,873 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:35:06,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:35:06,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:35:06,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:35:06,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:35:06,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:35:06,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:35:06,874 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:35:06,874 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:35:06,874 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:35:06,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:35:06,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:35:06,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:35:06,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:35:06,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:35:06,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:35:06,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:35:06,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:35:06,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:35:06,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:35:06,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:35:06,878 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:35:06,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:35:06,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:35:06,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:35:06,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:35:06,881 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:35:06,881 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:35:07,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:35:07,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:35:07,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:35:07,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:35:07,149 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:35:07,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/copy-3-n-u.c [2022-01-10 15:35:07,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85570f580/3f95084ae81242bca43515048d35c26a/FLAG20722ba3e [2022-01-10 15:35:07,513 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:35:07,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-3-n-u.c [2022-01-10 15:35:07,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85570f580/3f95084ae81242bca43515048d35c26a/FLAG20722ba3e [2022-01-10 15:35:07,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85570f580/3f95084ae81242bca43515048d35c26a [2022-01-10 15:35:07,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:35:07,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:35:07,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:35:07,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:35:07,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:35:07,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:35:07" (1/1) ... [2022-01-10 15:35:07,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdb8125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:07, skipping insertion in model container [2022-01-10 15:35:07,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:35:07" (1/1) ... [2022-01-10 15:35:07,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:35:07,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:35:08,079 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-multidimensional/copy-3-n-u.c[322,335] [2022-01-10 15:35:08,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:35:08,128 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:35:08,138 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-multidimensional/copy-3-n-u.c[322,335] [2022-01-10 15:35:08,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:35:08,160 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:35:08,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08 WrapperNode [2022-01-10 15:35:08,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:35:08,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:35:08,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:35:08,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:35:08,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,193 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2022-01-10 15:35:08,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:35:08,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:35:08,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:35:08,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:35:08,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:35:08,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:35:08,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:35:08,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:35:08,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (1/1) ... [2022-01-10 15:35:08,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:35:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:35:08,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 15:35:08,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 15:35:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:35:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:35:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 15:35:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 15:35:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:35:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:35:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 15:35:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 15:35:08,399 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:35:08,400 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:35:09,648 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:35:09,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:35:09,653 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 15:35:09,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:35:09 BoogieIcfgContainer [2022-01-10 15:35:09,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:35:09,655 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:35:09,655 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:35:09,656 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:35:09,658 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:35:09" (1/1) ... [2022-01-10 15:35:09,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:35:09 BasicIcfg [2022-01-10 15:35:09,804 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:35:09,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:35:09,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:35:09,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:35:09,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:35:07" (1/4) ... [2022-01-10 15:35:09,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdded38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:35:09, skipping insertion in model container [2022-01-10 15:35:09,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:35:08" (2/4) ... [2022-01-10 15:35:09,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdded38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:35:09, skipping insertion in model container [2022-01-10 15:35:09,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:35:09" (3/4) ... [2022-01-10 15:35:09,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdded38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:35:09, skipping insertion in model container [2022-01-10 15:35:09,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:35:09" (4/4) ... [2022-01-10 15:35:09,810 INFO L111 eAbstractionObserver]: Analyzing ICFG copy-3-n-u.cTransformedIcfg [2022-01-10 15:35:09,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:35:09,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:35:09,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:35:09,856 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 15:35:09,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:35:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.8) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 15:35:09,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:35:09,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:35:09,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:35:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:35:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1070958566, now seen corresponding path program 1 times [2022-01-10 15:35:09,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:35:09,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686125141] [2022-01-10 15:35:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:09,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:35:10,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:35:10,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550882253] [2022-01-10 15:35:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:10,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:10,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:35:10,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:35:10,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 15:35:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:35:10,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 15:35:10,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:35:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:35:10,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:35:10,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:35:10,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686125141] [2022-01-10 15:35:10,261 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:35:10,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550882253] [2022-01-10 15:35:10,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550882253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:35:10,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:35:10,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:35:10,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147656523] [2022-01-10 15:35:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:35:10,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:35:10,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:35:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:35:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:35:10,294 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.8) internal successors, (45), 26 states have internal predecessors, (45), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:35:10,308 INFO L93 Difference]: Finished difference Result 52 states and 88 transitions. [2022-01-10 15:35:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:35:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-01-10 15:35:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:35:10,315 INFO L225 Difference]: With dead ends: 52 [2022-01-10 15:35:10,315 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 15:35:10,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:35:10,320 INFO L933 BasicCegarLoop]: 35 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, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:35:10,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:35:10,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 15:35:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-10 15:35:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 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) [2022-01-10 15:35:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-01-10 15:35:10,346 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11 [2022-01-10 15:35:10,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:35:10,347 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-01-10 15:35:10,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:10,347 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-01-10 15:35:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 15:35:10,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:35:10,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:35:10,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 15:35:10,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-10 15:35:10,554 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:35:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:35:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1416554267, now seen corresponding path program 1 times [2022-01-10 15:35:10,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:35:10,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013041766] [2022-01-10 15:35:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:10,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:35:10,583 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:35:10,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927109250] [2022-01-10 15:35:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:10,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:10,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:35:10,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:35:10,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 15:35:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:35:10,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 15:35:10,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:35:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:35:11,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:35:11,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:35:11,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013041766] [2022-01-10 15:35:11,005 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:35:11,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927109250] [2022-01-10 15:35:11,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927109250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:35:11,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:35:11,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:35:11,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223951178] [2022-01-10 15:35:11,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:35:11,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:35:11,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:35:11,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:35:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:35:11,017 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:35:12,525 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2022-01-10 15:35:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 15:35:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-01-10 15:35:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:35:12,527 INFO L225 Difference]: With dead ends: 61 [2022-01-10 15:35:12,527 INFO L226 Difference]: Without dead ends: 42 [2022-01-10 15:35:12,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:35:12,528 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 15:35:12,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 56 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 15:35:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-10 15:35:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 25. [2022-01-10 15:35:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-01-10 15:35:12,534 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 11 [2022-01-10 15:35:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:35:12,535 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-01-10 15:35:12,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-01-10 15:35:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 15:35:12,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:35:12,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:35:12,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 15:35:12,749 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,SelfDestructingSolverStorable1 [2022-01-10 15:35:12,750 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:35:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:35:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash 326017175, now seen corresponding path program 1 times [2022-01-10 15:35:12,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:35:12,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985822287] [2022-01-10 15:35:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:12,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:35:12,779 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:35:12,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704978032] [2022-01-10 15:35:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:12,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:12,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:35:12,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:35:12,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 15:35:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:35:12,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 15:35:12,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:35:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 15:35:13,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:35:13,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:35:13,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985822287] [2022-01-10 15:35:13,147 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:35:13,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704978032] [2022-01-10 15:35:13,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704978032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:35:13,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:35:13,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:35:13,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040208542] [2022-01-10 15:35:13,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:35:13,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:35:13,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:35:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:35:13,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:35:13,150 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:15,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 15:35:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:35:16,420 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2022-01-10 15:35:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 15:35:16,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 15:35:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:35:16,421 INFO L225 Difference]: With dead ends: 73 [2022-01-10 15:35:16,421 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 15:35:16,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:35:16,422 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:35:16,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 15:35:16,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 15:35:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2022-01-10 15:35:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-01-10 15:35:16,427 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 17 [2022-01-10 15:35:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:35:16,427 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-01-10 15:35:16,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:16,427 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-01-10 15:35:16,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 15:35:16,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:35:16,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:35:16,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 15:35:16,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:16,632 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:35:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:35:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash 327718808, now seen corresponding path program 1 times [2022-01-10 15:35:16,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:35:16,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676637762] [2022-01-10 15:35:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:16,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:35:16,653 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:35:16,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521393821] [2022-01-10 15:35:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:16,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:16,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:35:16,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:35:16,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 15:35:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:35:16,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 15:35:16,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:35:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 15:35:16,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:35:16,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:35:16,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676637762] [2022-01-10 15:35:16,929 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:35:16,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521393821] [2022-01-10 15:35:16,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521393821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:35:16,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:35:16,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:35:16,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253317033] [2022-01-10 15:35:16,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:35:16,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:35:16,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:35:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:35:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:35:16,931 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:18,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 15:35:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:35:18,935 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2022-01-10 15:35:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 15:35:18,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 15:35:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:35:18,938 INFO L225 Difference]: With dead ends: 82 [2022-01-10 15:35:18,938 INFO L226 Difference]: Without dead ends: 36 [2022-01-10 15:35:18,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:35:18,939 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:35:18,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 64 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 15:35:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-10 15:35:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2022-01-10 15:35:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-01-10 15:35:18,945 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 23 [2022-01-10 15:35:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:35:18,945 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-01-10 15:35:18,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-01-10 15:35:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 15:35:18,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:35:18,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:35:18,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 15:35:19,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:19,161 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:35:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:35:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash 714889590, now seen corresponding path program 1 times [2022-01-10 15:35:19,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:35:19,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072505361] [2022-01-10 15:35:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:19,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:35:19,185 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:35:19,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590633746] [2022-01-10 15:35:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:19,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:19,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:35:19,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:35:19,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 15:35:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:35:19,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 15:35:19,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:35:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 15:35:19,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:35:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 15:35:24,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:35:24,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072505361] [2022-01-10 15:35:24,584 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:35:24,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590633746] [2022-01-10 15:35:24,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590633746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:35:24,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:35:24,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2022-01-10 15:35:24,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43839198] [2022-01-10 15:35:24,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:35:24,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 15:35:24,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:35:24,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 15:35:24,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 15:35:24,586 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:35,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 15:35:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:35:36,625 INFO L93 Difference]: Finished difference Result 96 states and 129 transitions. [2022-01-10 15:35:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 15:35:36,626 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-10 15:35:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:35:36,627 INFO L225 Difference]: With dead ends: 96 [2022-01-10 15:35:36,627 INFO L226 Difference]: Without dead ends: 68 [2022-01-10 15:35:36,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=216, Invalid=384, Unknown=0, NotChecked=0, Total=600 [2022-01-10 15:35:36,628 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 113 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-10 15:35:36,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 90 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 114 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-01-10 15:35:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-10 15:35:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2022-01-10 15:35:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.34375) internal successors, (86), 64 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2022-01-10 15:35:36,646 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 25 [2022-01-10 15:35:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:35:36,646 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2022-01-10 15:35:36,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2022-01-10 15:35:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 15:35:36,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:35:36,647 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:35:36,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 15:35:36,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:36,852 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:35:36,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:35:36,853 INFO L85 PathProgramCache]: Analyzing trace with hash 321380060, now seen corresponding path program 2 times [2022-01-10 15:35:36,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:35:36,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028995077] [2022-01-10 15:35:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:36,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:35:36,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:35:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606987940] [2022-01-10 15:35:36,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 15:35:36,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:36,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:35:36,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:35:36,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 15:35:37,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 15:35:37,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:35:37,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 15:35:37,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:35:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 15:35:37,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:35:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 15:35:37,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:35:37,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028995077] [2022-01-10 15:35:37,641 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:35:37,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606987940] [2022-01-10 15:35:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606987940] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:35:37,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:35:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-10 15:35:37,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184051507] [2022-01-10 15:35:37,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:35:37,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 15:35:37,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:35:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 15:35:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-10 15:35:37,643 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:40,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 15:35:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:35:42,970 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2022-01-10 15:35:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 15:35:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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 34 [2022-01-10 15:35:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:35:42,971 INFO L225 Difference]: With dead ends: 116 [2022-01-10 15:35:42,972 INFO L226 Difference]: Without dead ends: 104 [2022-01-10 15:35:42,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-01-10 15:35:42,973 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 226 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:35:42,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 123 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-01-10 15:35:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-10 15:35:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 72. [2022-01-10 15:35:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2022-01-10 15:35:42,999 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 34 [2022-01-10 15:35:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:35:43,000 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2022-01-10 15:35:43,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:35:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2022-01-10 15:35:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 15:35:43,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:35:43,005 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:35:43,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 15:35:43,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:43,211 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:35:43,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:35:43,212 INFO L85 PathProgramCache]: Analyzing trace with hash -899726371, now seen corresponding path program 3 times [2022-01-10 15:35:43,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:35:43,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631032340] [2022-01-10 15:35:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:35:43,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:35:43,252 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:35:43,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864683607] [2022-01-10 15:35:43,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 15:35:43,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:35:43,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:35:43,253 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) [2022-01-10 15:35:43,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 15:35:45,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-10 15:35:45,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:35:45,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-10 15:35:45,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:35:45,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 15:35:46,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 71 [2022-01-10 15:36:04,981 WARN L228 SmtUtils]: Spent 18.01s on a formula simplification. DAG size of input: 76 DAG size of output: 69 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-10 15:36:04,981 INFO L353 Elim1Store]: treesize reduction 256, result has 36.9 percent of original size [2022-01-10 15:36:04,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 239 treesize of output 358