/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/list-ext2-properties/simple_and_skiplist_2lvl-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 11:56:42,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 11:56:42,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 11:56:42,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 11:56:42,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 11:56:42,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 11:56:42,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 11:56:42,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 11:56:42,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 11:56:42,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 11:56:42,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 11:56:42,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 11:56:42,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 11:56:42,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 11:56:42,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 11:56:42,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 11:56:42,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 11:56:42,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 11:56:42,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 11:56:42,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 11:56:42,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 11:56:42,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 11:56:42,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 11:56:42,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 11:56:42,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 11:56:42,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 11:56:42,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 11:56:42,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 11:56:42,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 11:56:42,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 11:56:42,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 11:56:42,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 11:56:42,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 11:56:42,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 11:56:42,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 11:56:42,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 11:56:42,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 11:56:42,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 11:56:42,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 11:56:42,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 11:56:42,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 11:56:42,224 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 11:56:42,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 11:56:42,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 11:56:42,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 11:56:42,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 11:56:42,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 11:56:42,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 11:56:42,246 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 11:56:42,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 11:56:42,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 11:56:42,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 11:56:42,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 11:56:42,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 11:56:42,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:56:42,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 11:56:42,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 11:56:42,249 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 11:56:42,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 11:56:42,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 11:56:42,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 11:56:42,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 11:56:42,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 11:56:42,460 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 11:56:42,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i [2022-01-10 11:56:42,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d93b6a9c/5390325f17f144f2acc279559951730c/FLAGc240e49a0 [2022-01-10 11:56:42,850 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 11:56:42,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i [2022-01-10 11:56:42,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d93b6a9c/5390325f17f144f2acc279559951730c/FLAGc240e49a0 [2022-01-10 11:56:43,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d93b6a9c/5390325f17f144f2acc279559951730c [2022-01-10 11:56:43,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 11:56:43,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 11:56:43,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 11:56:43,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 11:56:43,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 11:56:43,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7e3294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43, skipping insertion in model container [2022-01-10 11:56:43,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 11:56:43,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 11:56:43,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i[24020,24033] [2022-01-10 11:56:43,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:56:43,504 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 11:56:43,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i[24020,24033] [2022-01-10 11:56:43,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:56:43,578 INFO L208 MainTranslator]: Completed translation [2022-01-10 11:56:43,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43 WrapperNode [2022-01-10 11:56:43,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 11:56:43,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 11:56:43,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 11:56:43,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 11:56:43,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,626 INFO L137 Inliner]: procedures = 129, calls = 56, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2022-01-10 11:56:43,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 11:56:43,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 11:56:43,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 11:56:43,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 11:56:43,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 11:56:43,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 11:56:43,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 11:56:43,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 11:56:43,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (1/1) ... [2022-01-10 11:56:43,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:56:43,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:56:43,677 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 11:56:43,684 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 11:56:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 11:56:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 11:56:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 11:56:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 11:56:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 11:56:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 11:56:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 11:56:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 11:56:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 11:56:43,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 11:56:43,846 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 11:56:43,848 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 11:56:44,212 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 11:56:44,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 11:56:44,217 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-10 11:56:44,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:44 BoogieIcfgContainer [2022-01-10 11:56:44,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 11:56:44,218 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 11:56:44,219 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 11:56:44,219 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 11:56:44,221 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:44" (1/1) ... [2022-01-10 11:56:44,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:56:44 BasicIcfg [2022-01-10 11:56:44,281 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 11:56:44,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 11:56:44,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 11:56:44,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 11:56:44,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:56:43" (1/4) ... [2022-01-10 11:56:44,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4244a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:56:44, skipping insertion in model container [2022-01-10 11:56:44,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:43" (2/4) ... [2022-01-10 11:56:44,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4244a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:56:44, skipping insertion in model container [2022-01-10 11:56:44,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:44" (3/4) ... [2022-01-10 11:56:44,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4244a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:56:44, skipping insertion in model container [2022-01-10 11:56:44,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:56:44" (4/4) ... [2022-01-10 11:56:44,286 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-2.iTransformedIcfg [2022-01-10 11:56:44,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 11:56:44,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 11:56:44,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 11:56:44,322 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 11:56:44,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 11:56:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 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 11:56:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 11:56:44,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:56:44,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:56:44,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:56:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:56:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash 96446344, now seen corresponding path program 1 times [2022-01-10 11:56:44,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:56:44,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866536099] [2022-01-10 11:56:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:44,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:56:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:44,492 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 11:56:44,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:56:44,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866536099] [2022-01-10 11:56:44,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866536099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:56:44,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:56:44,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 11:56:44,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754718569] [2022-01-10 11:56:44,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:56:44,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 11:56:44,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:56:44,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 11:56:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:56:44,522 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 11:56:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:56:44,536 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2022-01-10 11:56:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 11:56:44,537 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-01-10 11:56:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:56:44,543 INFO L225 Difference]: With dead ends: 59 [2022-01-10 11:56:44,543 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 11:56:44,545 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 11:56:44,549 INFO L933 BasicCegarLoop]: 42 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, 42 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 11:56:44,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:56:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 11:56:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 11:56:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:56:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-01-10 11:56:44,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2022-01-10 11:56:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:56:44,575 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-01-10 11:56:44,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 11:56:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-01-10 11:56:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 11:56:44,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:56:44,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:56:44,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 11:56:44,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:56:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:56:44,580 INFO L85 PathProgramCache]: Analyzing trace with hash 97369865, now seen corresponding path program 1 times [2022-01-10 11:56:44,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:56:44,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831735024] [2022-01-10 11:56:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:44,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:56:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:44,770 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 11:56:44,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:56:44,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831735024] [2022-01-10 11:56:44,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831735024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:56:44,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:56:44,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 11:56:44,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674313779] [2022-01-10 11:56:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:56:44,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 11:56:44,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:56:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 11:56:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 11:56:44,774 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 11:56:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:56:44,872 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-01-10 11:56:44,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 11:56:44,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2022-01-10 11:56:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:56:44,873 INFO L225 Difference]: With dead ends: 27 [2022-01-10 11:56:44,874 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 11:56:44,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 11:56:44,875 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 11:56:44,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 27 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 11:56:44,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 11:56:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2022-01-10 11:56:44,878 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 11:56:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 11:56:44,878 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2022-01-10 11:56:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:56:44,878 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 11:56:44,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 11:56:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 11:56:44,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 11:56:44,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:56:44,879 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:56:44,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 11:56:44,880 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:56:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:56:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1643845669, now seen corresponding path program 1 times [2022-01-10 11:56:44,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:56:44,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109941349] [2022-01-10 11:56:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:44,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:56:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:45,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:56:45,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109941349] [2022-01-10 11:56:45,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109941349] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:56:45,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157282556] [2022-01-10 11:56:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:45,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:56:45,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:56:45,015 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 11:56:45,016 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 11:56:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:45,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 11:56:45,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:56:45,258 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 15 treesize of output 11 [2022-01-10 11:56:45,262 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 15 treesize of output 11 [2022-01-10 11:56:45,320 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 15 treesize of output 7 [2022-01-10 11:56:45,323 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 15 treesize of output 7 [2022-01-10 11:56:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:45,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:56:45,437 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 141 treesize of output 125 [2022-01-10 11:56:45,443 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 133 treesize of output 117 [2022-01-10 11:56:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:45,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157282556] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 11:56:45,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 11:56:45,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-10 11:56:45,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133546676] [2022-01-10 11:56:45,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 11:56:45,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 11:56:45,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:56:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 11:56:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 11:56:45,621 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:56:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:56:45,711 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-01-10 11:56:45,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 11:56:45,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 11:56:45,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:56:45,714 INFO L225 Difference]: With dead ends: 31 [2022-01-10 11:56:45,714 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 11:56:45,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-01-10 11:56:45,715 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:56:45,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 31 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:56:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 11:56:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2022-01-10 11:56:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 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) [2022-01-10 11:56:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-01-10 11:56:45,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2022-01-10 11:56:45,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:56:45,720 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-01-10 11:56:45,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:56:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-01-10 11:56:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 11:56:45,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:56:45,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:56:45,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 11:56:45,921 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 [2022-01-10 11:56:45,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:56:45,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:56:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash 912455046, now seen corresponding path program 1 times [2022-01-10 11:56:45,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:56:45,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430535794] [2022-01-10 11:56:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:45,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:56:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:46,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:56:46,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430535794] [2022-01-10 11:56:46,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430535794] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:56:46,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895127548] [2022-01-10 11:56:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:46,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:56:46,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:56:46,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 11:56:46,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 11:56:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:46,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 11:56:46,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:56:46,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-01-10 11:56:46,282 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 11 treesize of output 7 [2022-01-10 11:56:46,293 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 11:56:46,294 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 11 treesize of output 11 [2022-01-10 11:56:46,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:56:46,340 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 23 treesize of output 22 [2022-01-10 11:56:46,378 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 11:56:46,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:56:46,411 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:46,411 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 15 treesize of output 10 [2022-01-10 11:56:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:46,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:56:46,451 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_118 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (= (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_118) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8|) 1) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8|)))) is different from false [2022-01-10 11:56:46,479 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_118 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8| Int) (v_ArrVal_116 Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (= (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| 4) 18446744073709551616) v_ArrVal_116)) |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| v_ArrVal_118) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8|) 1) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8|)))) is different from false [2022-01-10 11:56:46,515 INFO L353 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2022-01-10 11:56:46,516 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2022-01-10 11:56:46,524 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:46,525 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 30 treesize of output 33 [2022-01-10 11:56:46,530 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 9 treesize of output 7 [2022-01-10 11:56:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-10 11:56:46,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895127548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 11:56:46,740 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 11:56:46,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-01-10 11:56:46,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555147549] [2022-01-10 11:56:46,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 11:56:46,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 11:56:46,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:56:46,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 11:56:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=188, Unknown=2, NotChecked=58, Total=306 [2022-01-10 11:56:46,741 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:56:47,102 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (= (select |c_#validInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) 1) (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt|) 1) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.offsetInt| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|)) (= (select |c_#validInt| 1) 1) (forall ((v_ArrVal_118 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8| Int) (v_ArrVal_116 Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (= (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| 4) 18446744073709551616) v_ArrVal_116)) |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| v_ArrVal_118) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8|) 1) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8|))))) is different from false [2022-01-10 11:56:47,420 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt|) 1) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.offsetInt| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|)) (forall ((v_ArrVal_118 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8| Int) (v_ArrVal_116 Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (= (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| 4) 18446744073709551616) v_ArrVal_116)) |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| v_ArrVal_118) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8|) 1) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_8|))))) is different from false [2022-01-10 11:56:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:56:47,499 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-01-10 11:56:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 11:56:47,500 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 11:56:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:56:47,501 INFO L225 Difference]: With dead ends: 25 [2022-01-10 11:56:47,501 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 11:56:47,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=266, Unknown=4, NotChecked=148, Total=506 [2022-01-10 11:56:47,502 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 11:56:47,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 55 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 51 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-01-10 11:56:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 11:56:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2022-01-10 11:56:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2022-01-10 11:56:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-01-10 11:56:47,505 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2022-01-10 11:56:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:56:47,505 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-01-10 11:56:47,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:56:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-01-10 11:56:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 11:56:47,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:56:47,506 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:56:47,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 11:56:47,713 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 [2022-01-10 11:56:47,714 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:56:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:56:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash 101381256, now seen corresponding path program 1 times [2022-01-10 11:56:47,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:56:47,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827296184] [2022-01-10 11:56:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:47,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:56:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:47,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:56:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827296184] [2022-01-10 11:56:47,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827296184] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:56:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47863329] [2022-01-10 11:56:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:47,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:56:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:56:47,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 11:56:47,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 11:56:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:48,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-10 11:56:48,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:56:48,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-01-10 11:56:48,088 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 11:56:48,088 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 11 treesize of output 11 [2022-01-10 11:56:48,138 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 15 treesize of output 11 [2022-01-10 11:56:48,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 11:56:48,212 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 11:56:48,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 88 [2022-01-10 11:56:48,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:56:48,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 51 [2022-01-10 11:56:48,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 49 [2022-01-10 11:56:48,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:56:48,326 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 47 treesize of output 23 [2022-01-10 11:56:48,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:56:48,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2022-01-10 11:56:48,356 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 15 treesize of output 7 [2022-01-10 11:56:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:48,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:56:48,436 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 540 treesize of output 488 [2022-01-10 11:56:48,630 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_16| Int) (v_ArrVal_183 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_183) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (mod (+ |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_16| 4) 18446744073709551616)))) (or (not (<= 0 .cse0)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_16|)) (and (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| .cse0) (forall ((v_ArrVal_182 (Array Int Int))) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| (select (select (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_182) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (mod (+ |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_16| 4) 18446744073709551616))))) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_16| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|))))) is different from false [2022-01-10 11:56:48,703 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:48,703 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 69 [2022-01-10 11:56:48,708 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:48,709 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 69 [2022-01-10 11:56:48,719 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:48,719 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 102 treesize of output 97 [2022-01-10 11:56:48,723 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 97 treesize of output 85 [2022-01-10 11:56:48,732 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:48,732 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 101 treesize of output 104 [2022-01-10 11:56:48,739 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 39 treesize of output 33 [2022-01-10 11:56:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-10 11:56:49,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47863329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 11:56:49,389 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 11:56:49,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-10 11:56:49,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907577443] [2022-01-10 11:56:49,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 11:56:49,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 11:56:49,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:56:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 11:56:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=292, Unknown=1, NotChecked=34, Total=380 [2022-01-10 11:56:49,390 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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 11:56:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:56:49,614 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-01-10 11:56:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 11:56:49,615 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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 11:56:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:56:49,616 INFO L225 Difference]: With dead ends: 28 [2022-01-10 11:56:49,616 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 11:56:49,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=470, Unknown=1, NotChecked=44, Total=600 [2022-01-10 11:56:49,617 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 11:56:49,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 86 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-01-10 11:56:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 11:56:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-01-10 11:56:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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) [2022-01-10 11:56:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-01-10 11:56:49,620 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2022-01-10 11:56:49,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:56:49,620 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-01-10 11:56:49,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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 11:56:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-01-10 11:56:49,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 11:56:49,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:56:49,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:56:49,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 11:56:49,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:56:49,821 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:56:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:56:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash -630009367, now seen corresponding path program 2 times [2022-01-10 11:56:49,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:56:49,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135419483] [2022-01-10 11:56:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:49,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:56:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 11:56:49,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:56:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135419483] [2022-01-10 11:56:49,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135419483] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:56:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40899230] [2022-01-10 11:56:49,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 11:56:49,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:56:49,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:56:49,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 11:56:49,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 11:56:50,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 11:56:50,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 11:56:50,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 11:56:50,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:56:50,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-01-10 11:56:50,195 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 11 treesize of output 7 [2022-01-10 11:56:50,212 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-10 11:56:50,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-10 11:56:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:56:50,270 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 23 treesize of output 22 [2022-01-10 11:56:50,299 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 11:56:50,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-10 11:56:50,305 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 14 treesize of output 16 [2022-01-10 11:56:50,345 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 14 treesize of output 16 [2022-01-10 11:56:50,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 11:56:50,405 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 15 treesize of output 7 [2022-01-10 11:56:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:50,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:56:50,469 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (and (forall ((v_ArrVal_279 (Array Int Int))) (<= (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|) 1)) (forall ((v_ArrVal_279 (Array Int Int))) (< 0 (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|)))) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|)))) is different from false [2022-01-10 11:56:50,542 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (and (forall ((v_ArrVal_277 (Array Int Int)) (v_ArrVal_279 (Array Int Int))) (< 0 (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_277) |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|))) (forall ((v_ArrVal_277 (Array Int Int)) (v_ArrVal_279 (Array Int Int))) (<= (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_277) |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|) 1))) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|)))) is different from false [2022-01-10 11:56:50,654 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt_9| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|)) (not (= (select |c_#validInt| |v_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt_9|) 0)) (and (forall ((v_ArrVal_277 (Array Int Int)) (v_ArrVal_279 (Array Int Int))) (<= (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_277) |v_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt_9| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|) 1)) (forall ((v_ArrVal_277 (Array Int Int)) (v_ArrVal_279 (Array Int Int))) (< 0 (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_277) |v_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt_9| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|)))))) is different from false [2022-01-10 11:56:51,016 INFO L353 Elim1Store]: treesize reduction 50, result has 45.1 percent of original size [2022-01-10 11:56:51,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 68 [2022-01-10 11:56:51,041 INFO L353 Elim1Store]: treesize reduction 12, result has 69.2 percent of original size [2022-01-10 11:56:51,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 117 [2022-01-10 11:56:51,066 INFO L353 Elim1Store]: treesize reduction 12, result has 69.2 percent of original size [2022-01-10 11:56:51,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 218 treesize of output 224 [2022-01-10 11:56:51,083 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 155 treesize of output 151 [2022-01-10 11:56:51,094 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 151 treesize of output 149 [2022-01-10 11:56:51,102 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 149 treesize of output 141 [2022-01-10 11:56:51,110 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 141 treesize of output 137 [2022-01-10 11:56:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-01-10 11:56:51,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40899230] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 11:56:51,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 11:56:51,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-01-10 11:56:51,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805791595] [2022-01-10 11:56:51,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 11:56:51,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 11:56:51,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:56:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 11:56:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=303, Unknown=5, NotChecked=114, Total=506 [2022-01-10 11:56:51,699 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:56:52,711 WARN L838 $PredicateComparison]: unable to prove that (and (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.offsetInt|) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 0) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.offsetInt| 0) (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (and (forall ((v_ArrVal_277 (Array Int Int)) (v_ArrVal_279 (Array Int Int))) (< 0 (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_277) |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|))) (forall ((v_ArrVal_277 (Array Int Int)) (v_ArrVal_279 (Array Int Int))) (<= (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_277) |c_ULTIMATE.start_ULTIMATE.start_main_~t~0#1.baseInt| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|) 1))) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|)))) (let ((.cse0 (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|))) (or (and .cse0 (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt|) 1) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| 0)) (and (not .cse0) (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) 0) 1))))) is different from false [2022-01-10 11:56:52,771 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 0) (let ((.cse0 (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|))) (or (and .cse0 (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| 0)) (and (not .cse0) (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) 0) 1)))) (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (and (forall ((v_ArrVal_279 (Array Int Int))) (<= (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|) 1)) (forall ((v_ArrVal_279 (Array Int Int))) (< 0 (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_ArrVal_279) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|)))) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_22|))))) is different from false [2022-01-10 11:56:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:56:52,878 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-01-10 11:56:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 11:56:52,878 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 11:56:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:56:52,879 INFO L225 Difference]: With dead ends: 54 [2022-01-10 11:56:52,879 INFO L226 Difference]: Without dead ends: 52 [2022-01-10 11:56:52,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=243, Invalid=823, Unknown=10, NotChecked=330, Total=1406 [2022-01-10 11:56:52,880 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 11:56:52,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 65 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 139 Invalid, 0 Unknown, 153 Unchecked, 0.1s Time] [2022-01-10 11:56:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-10 11:56:52,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 23. [2022-01-10 11:56:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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) [2022-01-10 11:56:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-01-10 11:56:52,884 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2022-01-10 11:56:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:56:52,884 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-01-10 11:56:52,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:56:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-01-10 11:56:52,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 11:56:52,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:56:52,885 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:56:52,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 11:56:53,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:56:53,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:56:53,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:56:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 888110662, now seen corresponding path program 2 times [2022-01-10 11:56:53,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:56:53,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627520695] [2022-01-10 11:56:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:56:53,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:56:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:56:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:53,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:56:53,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627520695] [2022-01-10 11:56:53,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627520695] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:56:53,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086460084] [2022-01-10 11:56:53,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 11:56:53,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:56:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:56:53,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 11:56:53,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 11:56:53,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 11:56:53,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 11:56:53,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-10 11:56:53,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:56:53,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-01-10 11:56:53,610 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 11:56:53,610 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 11 treesize of output 11 [2022-01-10 11:56:53,648 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 15 treesize of output 11 [2022-01-10 11:56:53,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 11:56:53,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 68 [2022-01-10 11:56:53,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 29 treesize of output 32 [2022-01-10 11:56:53,733 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 11:56:53,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2022-01-10 11:56:53,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 28 treesize of output 27 [2022-01-10 11:56:54,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:56:54,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:56:54,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:56:54,035 INFO L353 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-01-10 11:56:54,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 121 treesize of output 58 [2022-01-10 11:56:54,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 11:56:54,046 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-10 11:56:54,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 27 [2022-01-10 11:56:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:56:54,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:56:54,200 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:54,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 202 [2022-01-10 11:56:54,210 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:54,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 160 [2022-01-10 11:56:54,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_8 (Array Int Int)) (v_arrayElimArr_7 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_33| Int)) (let ((.cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt| 4) 18446744073709551616))) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_33| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|)) (not (= (select v_arrayElimArr_8 .cse0) 0)) (let ((.cse6 (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_arrayElimArr_8)) (.cse3 (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.baseInt| v_arrayElimArr_7)) (.cse7 (mod (+ |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_33| 4) 18446744073709551616))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) .cse7)) (.cse5 (mod (+ 4 (select (select .cse6 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) .cse7)) 18446744073709551616))) (let ((.cse1 (select (select .cse6 .cse4) .cse5)) (.cse2 (select (select .cse3 .cse4) .cse5))) (and (<= .cse1 0) (<= .cse2 0) (< 0 (+ .cse1 1)) (< 0 (+ .cse2 1)))))) (not (= (select v_arrayElimArr_7 .cse0) 0)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1.offsetInt_33|))))) is different from false [2022-01-10 11:56:54,862 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:54,862 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 293 treesize of output 234 [2022-01-10 11:56:54,868 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:54,869 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 162 [2022-01-10 11:56:54,913 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:54,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 486 treesize of output 495 [2022-01-10 11:56:55,229 INFO L353 Elim1Store]: treesize reduction 54, result has 83.2 percent of original size [2022-01-10 11:56:55,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 1018 treesize of output 1045 [2022-01-10 11:56:55,341 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:55,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 838 treesize of output 748 [2022-01-10 11:56:55,441 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:56:55,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 830 treesize of output 766