/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:32:22,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:32:22,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:32:22,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:32:22,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:32:22,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:32:22,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:32:22,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:32:22,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:32:22,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:32:22,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:32:22,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:32:22,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:32:22,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:32:22,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:32:22,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:32:22,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:32:22,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:32:22,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:32:22,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:32:22,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:32:22,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:32:22,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:32:22,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:32:22,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:32:22,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:32:22,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:32:22,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:32:22,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:32:22,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:32:22,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:32:22,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:32:22,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:32:22,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:32:22,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:32:22,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:32:22,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:32:22,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:32:22,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:32:22,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:32:22,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:32:22,618 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:32:22,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:32:22,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:32:22,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:32:22,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:32:22,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:32:22,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:32:22,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:32:22,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:32:22,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:32:22,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:32:22,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:32:22,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:32:22,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:32:22,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:32:22,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:32:22,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:32:22,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:32:22,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:32:22,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:32:22,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:32:22,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:32:23,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:32:23,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:32:23,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:32:23,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:32:23,090 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:32:23,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2021-01-06 17:32:23,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/73a1dc561/91447c4937a542519b7da77d0d0803a1/FLAG452502057 [2021-01-06 17:32:23,801 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:32:23,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2021-01-06 17:32:23,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/73a1dc561/91447c4937a542519b7da77d0d0803a1/FLAG452502057 [2021-01-06 17:32:24,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/73a1dc561/91447c4937a542519b7da77d0d0803a1 [2021-01-06 17:32:24,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:32:24,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:32:24,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:32:24,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:32:24,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:32:24,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca057c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24, skipping insertion in model container [2021-01-06 17:32:24,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:32:24,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:32:24,339 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:32:24,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:32:24,377 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:32:24,390 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:32:24,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:32:24,436 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:32:24,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24 WrapperNode [2021-01-06 17:32:24,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:32:24,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:32:24,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:32:24,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:32:24,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:32:24,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:32:24,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:32:24,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:32:24,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... [2021-01-06 17:32:24,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:32:24,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:32:24,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:32:24,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:32:24,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:32:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:32:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:32:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:32:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:32:25,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:32:25,383 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-01-06 17:32:25,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:32:25 BoogieIcfgContainer [2021-01-06 17:32:25,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:32:25,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:32:25,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:32:25,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:32:25,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:32:24" (1/3) ... [2021-01-06 17:32:25,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2090554b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:32:25, skipping insertion in model container [2021-01-06 17:32:25,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:24" (2/3) ... [2021-01-06 17:32:25,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2090554b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:32:25, skipping insertion in model container [2021-01-06 17:32:25,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:32:25" (3/3) ... [2021-01-06 17:32:25,399 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.c [2021-01-06 17:32:25,410 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:32:25,415 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 17:32:25,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 17:32:25,483 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:32:25,483 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:32:25,483 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:32:25,483 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:32:25,483 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:32:25,483 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:32:25,484 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:32:25,484 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:32:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-01-06 17:32:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:32:25,516 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:25,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:25,518 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:25,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:25,526 INFO L82 PathProgramCache]: Analyzing trace with hash -141782897, now seen corresponding path program 1 times [2021-01-06 17:32:25,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:25,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742765894] [2021-01-06 17:32:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:25,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742765894] [2021-01-06 17:32:25,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:25,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:32:25,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175771940] [2021-01-06 17:32:25,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:32:25,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:25,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:32:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:32:25,747 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2021-01-06 17:32:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:25,767 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-01-06 17:32:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:32:25,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 17:32:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:25,782 INFO L225 Difference]: With dead ends: 83 [2021-01-06 17:32:25,782 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 17:32:25,785 INFO L677 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 [2021-01-06 17:32:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 17:32:25,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-01-06 17:32:25,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:32:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-01-06 17:32:25,822 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13 [2021-01-06 17:32:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:25,823 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-01-06 17:32:25,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:32:25,823 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-01-06 17:32:25,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:32:25,824 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:25,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:25,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:32:25,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1057770534, now seen corresponding path program 1 times [2021-01-06 17:32:25,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:25,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484877214] [2021-01-06 17:32:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:25,847 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:25,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878912710] [2021-01-06 17:32:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:25,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:32:25,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:26,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484877214] [2021-01-06 17:32:26,034 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:26,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878912710] [2021-01-06 17:32:26,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:26,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:32:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346056017] [2021-01-06 17:32:26,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:32:26,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:26,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:32:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:32:26,039 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2021-01-06 17:32:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:26,062 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-01-06 17:32:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:32:26,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 17:32:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:26,064 INFO L225 Difference]: With dead ends: 49 [2021-01-06 17:32:26,065 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:32:26,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:32:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:32:26,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 17:32:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:32:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-01-06 17:32:26,073 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2021-01-06 17:32:26,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:26,074 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-01-06 17:32:26,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:32:26,074 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-01-06 17:32:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:32:26,075 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:26,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:26,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:32:26,291 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:26,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1568670238, now seen corresponding path program 1 times [2021-01-06 17:32:26,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:26,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341426677] [2021-01-06 17:32:26,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:26,319 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:26,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811221340] [2021-01-06 17:32:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:26,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:32:26,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:26,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341426677] [2021-01-06 17:32:26,433 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:26,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811221340] [2021-01-06 17:32:26,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:26,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:32:26,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587862260] [2021-01-06 17:32:26,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:32:26,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:26,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:32:26,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:32:26,436 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2021-01-06 17:32:26,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:26,624 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-01-06 17:32:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:32:26,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 17:32:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:26,627 INFO L225 Difference]: With dead ends: 69 [2021-01-06 17:32:26,627 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:32:26,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:32:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2021-01-06 17:32:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-06 17:32:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-01-06 17:32:26,638 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 15 [2021-01-06 17:32:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:26,638 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-01-06 17:32:26,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:32:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-01-06 17:32:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:32:26,639 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:26,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:26,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:26,853 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:26,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:26,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1384108475, now seen corresponding path program 1 times [2021-01-06 17:32:26,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:26,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713097035] [2021-01-06 17:32:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:26,871 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:26,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381833507] [2021-01-06 17:32:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:26,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:32:26,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:27,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713097035] [2021-01-06 17:32:27,047 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:27,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381833507] [2021-01-06 17:32:27,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:27,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:32:27,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508013217] [2021-01-06 17:32:27,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:27,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:27,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:27,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:27,050 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 8 states. [2021-01-06 17:32:27,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:27,337 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-01-06 17:32:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:27,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2021-01-06 17:32:27,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:27,340 INFO L225 Difference]: With dead ends: 80 [2021-01-06 17:32:27,340 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 17:32:27,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:32:27,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 17:32:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 45. [2021-01-06 17:32:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:32:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-01-06 17:32:27,351 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2021-01-06 17:32:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:27,352 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-01-06 17:32:27,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-01-06 17:32:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:32:27,353 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:27,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:27,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:27,567 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1311460386, now seen corresponding path program 1 times [2021-01-06 17:32:27,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:27,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020001953] [2021-01-06 17:32:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:27,586 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:27,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080318226] [2021-01-06 17:32:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:27,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:32:27,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:27,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020001953] [2021-01-06 17:32:27,808 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:27,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080318226] [2021-01-06 17:32:27,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:27,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:32:27,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338558015] [2021-01-06 17:32:27,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:27,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:27,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:27,811 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2021-01-06 17:32:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:28,003 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-01-06 17:32:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:28,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2021-01-06 17:32:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:28,005 INFO L225 Difference]: With dead ends: 64 [2021-01-06 17:32:28,005 INFO L226 Difference]: Without dead ends: 62 [2021-01-06 17:32:28,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-06 17:32:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2021-01-06 17:32:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:32:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2021-01-06 17:32:28,016 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 18 [2021-01-06 17:32:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:28,016 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2021-01-06 17:32:28,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2021-01-06 17:32:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:32:28,017 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:28,017 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:28,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:28,232 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:28,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1862118746, now seen corresponding path program 1 times [2021-01-06 17:32:28,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:28,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672797413] [2021-01-06 17:32:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:28,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:28,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131836175] [2021-01-06 17:32:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:28,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:32:28,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:28,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672797413] [2021-01-06 17:32:28,374 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:28,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131836175] [2021-01-06 17:32:28,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:28,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:32:28,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174227504] [2021-01-06 17:32:28,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:32:28,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:28,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:32:28,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:32:28,376 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 5 states. [2021-01-06 17:32:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:28,402 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2021-01-06 17:32:28,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:32:28,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2021-01-06 17:32:28,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:28,405 INFO L225 Difference]: With dead ends: 85 [2021-01-06 17:32:28,405 INFO L226 Difference]: Without dead ends: 55 [2021-01-06 17:32:28,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:32:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-06 17:32:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-01-06 17:32:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:32:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-01-06 17:32:28,415 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 20 [2021-01-06 17:32:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:28,416 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-01-06 17:32:28,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:32:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-01-06 17:32:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:32:28,417 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:28,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:28,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:32:28,626 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1887855967, now seen corresponding path program 1 times [2021-01-06 17:32:28,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:28,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009118261] [2021-01-06 17:32:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:28,648 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:28,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838923000] [2021-01-06 17:32:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:28,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:32:28,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:28,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009118261] [2021-01-06 17:32:28,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:28,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838923000] [2021-01-06 17:32:28,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:28,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:32:28,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541302213] [2021-01-06 17:32:28,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:28,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:28,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:28,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:28,823 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 8 states. [2021-01-06 17:32:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:29,086 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-01-06 17:32:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:29,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-01-06 17:32:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:29,088 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:32:29,088 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 17:32:29,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 17:32:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2021-01-06 17:32:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:32:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-01-06 17:32:29,097 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2021-01-06 17:32:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:29,098 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-01-06 17:32:29,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-01-06 17:32:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:32:29,099 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:29,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:29,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:29,315 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:29,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:29,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1753227772, now seen corresponding path program 1 times [2021-01-06 17:32:29,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:29,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492537229] [2021-01-06 17:32:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:29,330 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:29,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474136114] [2021-01-06 17:32:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:29,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:32:29,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:29,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492537229] [2021-01-06 17:32:29,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:29,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474136114] [2021-01-06 17:32:29,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:29,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:32:29,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363323935] [2021-01-06 17:32:29,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:29,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:29,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:29,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:29,624 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 9 states. [2021-01-06 17:32:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:31,895 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-01-06 17:32:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:32:31,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-01-06 17:32:31,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:31,899 INFO L225 Difference]: With dead ends: 67 [2021-01-06 17:32:31,899 INFO L226 Difference]: Without dead ends: 65 [2021-01-06 17:32:31,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:32:31,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-06 17:32:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2021-01-06 17:32:31,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:32:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-01-06 17:32:31,916 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2021-01-06 17:32:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:31,917 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-01-06 17:32:31,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-01-06 17:32:31,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:32:31,918 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:31,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:32,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:32,135 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash 29719088, now seen corresponding path program 1 times [2021-01-06 17:32:32,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:32,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277085826] [2021-01-06 17:32:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:32,149 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:32,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068134781] [2021-01-06 17:32:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:32,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:32:32,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:32,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277085826] [2021-01-06 17:32:32,336 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:32,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068134781] [2021-01-06 17:32:32,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:32,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:32:32,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578455989] [2021-01-06 17:32:32,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:32:32,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:32,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:32:32,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:32:32,338 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 6 states. [2021-01-06 17:32:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:32,375 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2021-01-06 17:32:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:32:32,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-01-06 17:32:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:32,376 INFO L225 Difference]: With dead ends: 78 [2021-01-06 17:32:32,376 INFO L226 Difference]: Without dead ends: 38 [2021-01-06 17:32:32,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-06 17:32:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-01-06 17:32:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-06 17:32:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-01-06 17:32:32,383 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 26 [2021-01-06 17:32:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:32,384 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-01-06 17:32:32,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:32:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-01-06 17:32:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:32:32,385 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:32,385 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:32,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:32:32,601 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:32,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:32,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1666886870, now seen corresponding path program 1 times [2021-01-06 17:32:32,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:32,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437308968] [2021-01-06 17:32:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:32,615 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:32,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150167768] [2021-01-06 17:32:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:32:32,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:32:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:32:32,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:32:32,786 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:32:32,787 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:32:32,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:33,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:32:33 BoogieIcfgContainer [2021-01-06 17:32:33,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:32:33,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:32:33,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:32:33,036 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:32:33,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:32:25" (3/4) ... [2021-01-06 17:32:33,038 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 17:32:33,103 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c-witness.graphml [2021-01-06 17:32:33,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:32:33,105 INFO L168 Benchmark]: Toolchain (without parser) took 8952.61 ms. Allocated memory was 174.1 MB in the beginning and 221.2 MB in the end (delta: 47.2 MB). Free memory was 148.7 MB in the beginning and 192.3 MB in the end (delta: -43.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:33,106 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 174.1 MB. Free memory is still 145.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:32:33,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.42 ms. Allocated memory is still 174.1 MB. Free memory was 148.4 MB in the beginning and 137.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:33,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.55 ms. Allocated memory is still 174.1 MB. Free memory was 137.9 MB in the beginning and 136.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:33,107 INFO L168 Benchmark]: Boogie Preprocessor took 47.45 ms. Allocated memory is still 174.1 MB. Free memory was 136.2 MB in the beginning and 135.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:33,108 INFO L168 Benchmark]: RCFGBuilder took 812.23 ms. Allocated memory is still 174.1 MB. Free memory was 135.0 MB in the beginning and 153.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:33,109 INFO L168 Benchmark]: TraceAbstraction took 7646.39 ms. Allocated memory was 174.1 MB in the beginning and 221.2 MB in the end (delta: 47.2 MB). Free memory was 152.4 MB in the beginning and 195.4 MB in the end (delta: -43.0 MB). Peak memory consumption was 124.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:33,110 INFO L168 Benchmark]: Witness Printer took 67.35 ms. Allocated memory is still 221.2 MB. Free memory was 195.4 MB in the beginning and 192.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:33,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 174.1 MB. Free memory is still 145.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.42 ms. Allocated memory is still 174.1 MB. Free memory was 148.4 MB in the beginning and 137.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 81.55 ms. Allocated memory is still 174.1 MB. Free memory was 137.9 MB in the beginning and 136.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.45 ms. Allocated memory is still 174.1 MB. Free memory was 136.2 MB in the beginning and 135.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 812.23 ms. Allocated memory is still 174.1 MB. Free memory was 135.0 MB in the beginning and 153.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7646.39 ms. Allocated memory was 174.1 MB in the beginning and 221.2 MB in the end (delta: 47.2 MB). Free memory was 152.4 MB in the beginning and 195.4 MB in the end (delta: -43.0 MB). Peak memory consumption was 124.8 MB. Max. memory is 8.0 GB. * Witness Printer took 67.35 ms. Allocated memory is still 221.2 MB. Free memory was 195.4 MB in the beginning and 192.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L40] EXPR counter++ VAL [counter=1] [L40] COND TRUE counter++<2 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=1] [L46] EXPR counter++ VAL [counter=2] [L46] COND TRUE counter++<2 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L51] COND TRUE !(c >= b) VAL [counter=2] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=2] [L40] EXPR counter++ VAL [counter=3] [L40] COND FALSE !(counter++<2) [L11] COND TRUE !(cond) VAL [counter=3] [L13] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 571 SDslu, 610 SDs, 0 SdLazy, 410 SolverSat, 43 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 76 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 20224 SizeOfPredicates, 51 NumberOfNonLiveVariables, 885 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...