/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/ldv-regression/test23-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 11:52:44,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 11:52:44,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 11:52:44,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 11:52:44,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 11:52:44,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 11:52:44,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 11:52:44,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 11:52:44,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 11:52:44,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 11:52:44,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 11:52:44,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 11:52:44,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 11:52:44,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 11:52:44,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 11:52:44,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 11:52:44,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 11:52:44,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 11:52:44,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 11:52:44,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 11:52:44,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 11:52:44,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 11:52:44,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 11:52:44,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 11:52:44,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 11:52:44,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 11:52:44,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 11:52:44,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 11:52:44,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 11:52:44,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 11:52:44,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 11:52:44,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 11:52:44,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 11:52:44,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 11:52:44,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 11:52:44,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 11:52:44,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 11:52:44,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 11:52:44,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 11:52:44,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 11:52:44,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 11:52:44,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 11:52:44,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 11:52:44,947 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 11:52:44,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 11:52:44,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 11:52:44,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 11:52:44,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 11:52:44,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 11:52:44,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 11:52:44,949 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 11:52:44,949 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 11:52:44,949 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 11:52:44,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 11:52:44,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 11:52:44,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 11:52:44,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 11:52:44,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 11:52:44,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:52:44,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 11:52:44,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 11:52:44,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 11:52:44,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 11:52:44,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 11:52:44,951 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 11:52:44,951 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 11:52:44,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 11:52:44,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 11:52:44,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 11:52:44,952 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 11:52:44,952 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 11:52:45,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 11:52:45,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 11:52:45,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 11:52:45,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 11:52:45,205 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 11:52:45,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test23-1.c [2022-01-10 11:52:45,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f209f3744/fb8c15bae0784841b587459f11648eee/FLAGcc36734e4 [2022-01-10 11:52:45,624 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 11:52:45,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test23-1.c [2022-01-10 11:52:45,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f209f3744/fb8c15bae0784841b587459f11648eee/FLAGcc36734e4 [2022-01-10 11:52:45,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f209f3744/fb8c15bae0784841b587459f11648eee [2022-01-10 11:52:45,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 11:52:45,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 11:52:45,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 11:52:45,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 11:52:45,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 11:52:45,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1492d22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45, skipping insertion in model container [2022-01-10 11:52:45,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 11:52:45,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 11:52:45,817 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test23-1.c[1075,1088] [2022-01-10 11:52:45,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:52:45,845 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 11:52:45,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test23-1.c[1075,1088] [2022-01-10 11:52:45,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:52:45,901 INFO L208 MainTranslator]: Completed translation [2022-01-10 11:52:45,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45 WrapperNode [2022-01-10 11:52:45,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 11:52:45,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 11:52:45,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 11:52:45,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 11:52:45,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,958 INFO L137 Inliner]: procedures = 19, calls = 57, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 115 [2022-01-10 11:52:45,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 11:52:45,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 11:52:45,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 11:52:45,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 11:52:45,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:45,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 11:52:45,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 11:52:45,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 11:52:45,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 11:52:46,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (1/1) ... [2022-01-10 11:52:46,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:52:46,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:52:46,040 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 11:52:46,065 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 11:52:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 11:52:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 11:52:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 11:52:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 11:52:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 11:52:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 11:52:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 11:52:46,175 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 11:52:46,176 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 11:52:46,340 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 11:52:46,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 11:52:46,345 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 11:52:46,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:46 BoogieIcfgContainer [2022-01-10 11:52:46,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 11:52:46,348 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 11:52:46,349 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 11:52:46,350 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 11:52:46,352 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:46" (1/1) ... [2022-01-10 11:52:46,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:52:46 BasicIcfg [2022-01-10 11:52:46,482 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 11:52:46,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 11:52:46,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 11:52:46,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 11:52:46,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:52:45" (1/4) ... [2022-01-10 11:52:46,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7d8b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:52:46, skipping insertion in model container [2022-01-10 11:52:46,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:45" (2/4) ... [2022-01-10 11:52:46,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7d8b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:52:46, skipping insertion in model container [2022-01-10 11:52:46,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:46" (3/4) ... [2022-01-10 11:52:46,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7d8b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:52:46, skipping insertion in model container [2022-01-10 11:52:46,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:52:46" (4/4) ... [2022-01-10 11:52:46,488 INFO L111 eAbstractionObserver]: Analyzing ICFG test23-1.cTransformedIcfg [2022-01-10 11:52:46,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 11:52:46,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 11:52:46,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 11:52:46,543 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 11:52:46,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 11:52:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:52:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 11:52:46,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:52:46,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:52:46,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:52:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:52:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash 745061637, now seen corresponding path program 1 times [2022-01-10 11:52:46,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:52:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949948969] [2022-01-10 11:52:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:52:46,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:52:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:52:46,931 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 11:52:46,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:52:46,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949948969] [2022-01-10 11:52:46,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949948969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:52:46,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:52:46,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 11:52:46,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850011204] [2022-01-10 11:52:46,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:52:46,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 11:52:46,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:52:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 11:52:46,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:52:46,976 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 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) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 11:52:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:52:46,991 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-01-10 11:52:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 11:52:46,993 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2022-01-10 11:52:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:52:47,008 INFO L225 Difference]: With dead ends: 30 [2022-01-10 11:52:47,008 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 11:52:47,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:52:47,014 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:52:47,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:52:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 11:52:47,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 11:52:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:52:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 11:52:47,042 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2022-01-10 11:52:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:52:47,043 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 11:52:47,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 11:52:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 11:52:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 11:52:47,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:52:47,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:52:47,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 11:52:47,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:52:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:52:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1651505872, now seen corresponding path program 1 times [2022-01-10 11:52:47,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:52:47,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746761567] [2022-01-10 11:52:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:52:47,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:52:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:52:54,203 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 11:52:54,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:52:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746761567] [2022-01-10 11:52:54,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746761567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:52:54,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:52:54,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 11:52:54,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012320976] [2022-01-10 11:52:54,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:52:54,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 11:52:54,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:52:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 11:52:54,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-01-10 11:52:54,207 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:52:59,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:52:59,006 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-01-10 11:52:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 11:52:59,007 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 11:52:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:52:59,008 INFO L225 Difference]: With dead ends: 27 [2022-01-10 11:52:59,008 INFO L226 Difference]: Without dead ends: 22 [2022-01-10 11:52:59,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-01-10 11:52:59,011 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 11:52:59,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 34 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 11:52:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-10 11:52:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-01-10 11:52:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:52:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-10 11:52:59,019 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-01-10 11:52:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:52:59,019 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-10 11:52:59,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:52:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-10 11:52:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 11:52:59,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:52:59,020 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:52:59,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 11:52:59,020 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:52:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:52:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1213461772, now seen corresponding path program 1 times [2022-01-10 11:52:59,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:52:59,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419753698] [2022-01-10 11:52:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:52:59,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:52:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:53:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:53:05,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:53:05,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419753698] [2022-01-10 11:53:05,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419753698] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:53:05,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061348050] [2022-01-10 11:53:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:53:05,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:53:05,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:53:05,111 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 11:53:05,114 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 11:53:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:53:05,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-10 11:53:06,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:53:06,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-01-10 11:53:23,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:53:23,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 27 [2022-01-10 11:53:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:53:23,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:53:24,269 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 332 treesize of output 248