/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:18:27,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:18:27,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:18:27,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:18:27,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:18:27,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:18:27,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:18:27,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:18:27,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:18:27,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:18:27,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:18:27,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:18:27,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:18:27,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:18:27,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:18:27,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:18:27,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:18:27,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:18:27,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:18:27,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:18:27,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:18:27,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:18:27,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:18:27,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:18:27,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 03:18:27,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 03:18:27,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 03:18:27,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 03:18:27,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 03:18:27,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 03:18:27,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:18:27,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:18:27,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:18:27,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:18:27,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:18:27,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:18:27,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:18:27,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:18:27,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:18:27,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:18:27,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:18:27,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:18:27,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:18:27,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:18:27,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:18:27,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:18:27,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:18:27,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:18:27,750 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:18:27,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:18:27,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:18:27,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:18:27,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:18:27,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:18:27,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:18:27,752 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:18:27,752 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:18:27,753 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:18:27,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:18:27,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:18:27,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:18:27,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:18:27,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:18:27,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:18:27,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:18:27,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:18:27,755 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:18:27,755 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:18:27,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:18:27,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:18:27,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:18:27,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:18:27,966 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:18:27,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c [2022-01-11 03:18:28,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f95c08a71/363e8e6920264f60b2e66018b6e46c36/FLAGc449e5742 [2022-01-11 03:18:28,359 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:18:28,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c [2022-01-11 03:18:28,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f95c08a71/363e8e6920264f60b2e66018b6e46c36/FLAGc449e5742 [2022-01-11 03:18:28,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f95c08a71/363e8e6920264f60b2e66018b6e46c36 [2022-01-11 03:18:28,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:18:28,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:18:28,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:18:28,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:18:28,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:18:28,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:28,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1409c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28, skipping insertion in model container [2022-01-11 03:18:28,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:28,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:18:28,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:18:28,910 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-cav19/array_tiling_tcpy.c[408,421] [2022-01-11 03:18:28,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:18:28,946 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:18:28,955 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-cav19/array_tiling_tcpy.c[408,421] [2022-01-11 03:18:28,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:18:28,972 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:18:28,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28 WrapperNode [2022-01-11 03:18:28,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:18:28,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:18:28,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:18:28,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:18:28,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:28,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:28,999 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2022-01-11 03:18:29,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:18:29,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:18:29,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:18:29,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:18:29,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:29,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:29,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:29,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:29,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:29,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:29,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:29,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:18:29,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:18:29,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:18:29,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:18:29,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (1/1) ... [2022-01-11 03:18:29,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:18:29,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:18:29,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 03:18:29,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 03:18:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:18:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:18:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 03:18:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 03:18:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:18:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:18:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 03:18:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 03:18:29,131 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:18:29,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:18:29,309 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:18:29,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:18:29,329 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 03:18:29,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:18:29 BoogieIcfgContainer [2022-01-11 03:18:29,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:18:29,331 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:18:29,331 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:18:29,332 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:18:29,334 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:18:29" (1/1) ... [2022-01-11 03:18:29,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:18:29 BasicIcfg [2022-01-11 03:18:29,420 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:18:29,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:18:29,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:18:29,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:18:29,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:18:28" (1/4) ... [2022-01-11 03:18:29,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef8196a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:18:29, skipping insertion in model container [2022-01-11 03:18:29,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:18:28" (2/4) ... [2022-01-11 03:18:29,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef8196a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:18:29, skipping insertion in model container [2022-01-11 03:18:29,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:18:29" (3/4) ... [2022-01-11 03:18:29,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef8196a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:18:29, skipping insertion in model container [2022-01-11 03:18:29,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:18:29" (4/4) ... [2022-01-11 03:18:29,427 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.cTransformedIcfg [2022-01-11 03:18:29,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:18:29,431 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:18:29,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:18:29,472 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 03:18:29,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:18:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:18:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 03:18:29,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:18:29,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:18:29,485 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:18:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:18:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1522634140, now seen corresponding path program 1 times [2022-01-11 03:18:29,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:18:29,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444415724] [2022-01-11 03:18:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:18:29,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:18:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:18:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:18:29,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:18:29,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444415724] [2022-01-11 03:18:29,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444415724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:18:29,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:18:29,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:18:29,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253879798] [2022-01-11 03:18:29,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:18:29,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 03:18:29,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:18:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 03:18:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:18:29,715 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-01-11 03:18:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:18:29,727 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-01-11 03:18:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 03:18:29,728 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 [2022-01-11 03:18:29,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:18:29,733 INFO L225 Difference]: With dead ends: 35 [2022-01-11 03:18:29,734 INFO L226 Difference]: Without dead ends: 15 [2022-01-11 03:18:29,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:18:29,739 INFO L933 BasicCegarLoop]: 20 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, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:18:29,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:18:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-11 03:18:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-11 03:18:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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) [2022-01-11 03:18:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-01-11 03:18:29,774 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-01-11 03:18:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:18:29,774 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-01-11 03:18:29,775 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) [2022-01-11 03:18:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-01-11 03:18:29,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 03:18:29,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:18:29,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:18:29,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:18:29,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:18:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:18:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash 965802214, now seen corresponding path program 1 times [2022-01-11 03:18:29,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:18:29,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326993286] [2022-01-11 03:18:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:18:29,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:18:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:18:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:18:30,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:18:30,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326993286] [2022-01-11 03:18:30,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326993286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:18:30,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:18:30,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 03:18:30,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057971897] [2022-01-11 03:18:30,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:18:30,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 03:18:30,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:18:30,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 03:18:30,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:18:30,066 INFO L87 Difference]: Start difference. First operand 15 states and 16 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) [2022-01-11 03:18:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:18:30,202 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-01-11 03:18:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 03:18:30,205 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 [2022-01-11 03:18:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:18:30,205 INFO L225 Difference]: With dead ends: 30 [2022-01-11 03:18:30,206 INFO L226 Difference]: Without dead ends: 23 [2022-01-11 03:18:30,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:18:30,207 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:18:30,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 15 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 03:18:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-11 03:18:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2022-01-11 03:18:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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) [2022-01-11 03:18:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-01-11 03:18:30,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-01-11 03:18:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:18:30,213 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-01-11 03:18:30,213 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) [2022-01-11 03:18:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-01-11 03:18:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 03:18:30,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:18:30,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:18:30,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 03:18:30,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:18:30,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:18:30,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1333402276, now seen corresponding path program 1 times [2022-01-11 03:18:30,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:18:30,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245843369] [2022-01-11 03:18:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:18:30,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:18:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:18:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:18:30,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:18:30,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245843369] [2022-01-11 03:18:30,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245843369] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:18:30,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571514168] [2022-01-11 03:18:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:18:30,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:18:30,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:18:30,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:18:30,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 03:18:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:18:30,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 03:18:30,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:18:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:18:30,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:18:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:18:31,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571514168] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:18:31,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 03:18:31,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2022-01-11 03:18:31,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029118481] [2022-01-11 03:18:31,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 03:18:31,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 03:18:31,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:18:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 03:18:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-11 03:18:31,142 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:18:31,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:18:31,375 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-01-11 03:18:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 03:18:31,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 13 [2022-01-11 03:18:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:18:31,378 INFO L225 Difference]: With dead ends: 38 [2022-01-11 03:18:31,379 INFO L226 Difference]: Without dead ends: 31 [2022-01-11 03:18:31,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-01-11 03:18:31,380 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 73 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:18:31,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 32 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 03:18:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-11 03:18:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 18. [2022-01-11 03:18:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:18:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-01-11 03:18:31,388 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2022-01-11 03:18:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:18:31,388 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-01-11 03:18:31,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:18:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-01-11 03:18:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 03:18:31,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:18:31,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:18:31,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 03:18:31,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:18:31,594 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:18:31,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:18:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1885223710, now seen corresponding path program 2 times [2022-01-11 03:18:31,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:18:31,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396678539] [2022-01-11 03:18:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:18:31,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:18:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:18:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:18:34,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:18:34,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396678539] [2022-01-11 03:18:34,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396678539] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:18:34,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296312840] [2022-01-11 03:18:34,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 03:18:34,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:18:34,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:18:34,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:18:34,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 03:18:34,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 03:18:34,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 03:18:34,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-11 03:18:34,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:18:34,512 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-11 03:18:34,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-01-11 03:18:34,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:18:34,692 INFO L353 Elim1Store]: treesize reduction 193, result has 22.2 percent of original size [2022-01-11 03:18:34,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 102 [2022-01-11 03:18:34,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:18:34,998 INFO L353 Elim1Store]: treesize reduction 248, result has 16.5 percent of original size [2022-01-11 03:18:34,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 111 [2022-01-11 03:18:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:18:35,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:19:08,896 WARN L228 SmtUtils]: Spent 12.06s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-11 03:19:08,897 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 03:19:08,897 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 621482 treesize of output 612274 [2022-01-11 03:19:09,249 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 612266 treesize of output 580010 [2022-01-11 03:19:09,593 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2022-01-11 03:19:09,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:19:09,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-01-11 03:19:09,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16744239] [2022-01-11 03:19:09,594 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-11 03:19:09,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 03:19:09,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:09,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 03:19:09,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=413, Unknown=3, NotChecked=0, Total=506 [2022-01-11 03:19:09,596 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2022-01-11 03:19:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:17,336 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-01-11 03:19:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 03:19:17,337 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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 [2022-01-11 03:19:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:17,337 INFO L225 Difference]: With dead ends: 31 [2022-01-11 03:19:17,337 INFO L226 Difference]: Without dead ends: 29 [2022-01-11 03:19:17,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=188, Invalid=739, Unknown=3, NotChecked=0, Total=930 [2022-01-11 03:19:17,338 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 88 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:17,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 27 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-11 03:19:17,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-11 03:19:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-01-11 03:19:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:19:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-11 03:19:17,347 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2022-01-11 03:19:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:17,348 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-11 03:19:17,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2022-01-11 03:19:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-11 03:19:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 03:19:17,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:17,349 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:17,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 03:19:17,553 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,SelfDestructingSolverStorable3 [2022-01-11 03:19:17,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:17,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1350046371, now seen corresponding path program 1 times [2022-01-11 03:19:17,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:17,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865842450] [2022-01-11 03:19:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:17,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:19:18,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:18,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865842450] [2022-01-11 03:19:18,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865842450] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:19:18,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739894547] [2022-01-11 03:19:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:18,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:18,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:18,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:19:18,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 03:19:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:19,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-11 03:19:19,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:19:19,526 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-11 03:19:19,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2022-01-11 03:19:19,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:19:19,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 03:19:19,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2022-01-11 03:19:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:19:20,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:19:22,980 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 03:19:22,981 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 2526 treesize of output 2470 [2022-01-11 03:19:23,003 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 2462 treesize of output 2246