/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/fermat1-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:37:56,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:37:56,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:37:56,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:37:56,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:37:56,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:37:56,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:37:56,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:37:56,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:37:56,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:37:56,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:37:56,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:37:56,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:37:56,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:37:56,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:37:56,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:37:56,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:37:56,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:37:56,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:37:56,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:37:56,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:37:56,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:37:56,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:37:56,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:37:56,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:37:56,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:37:56,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:37:56,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:37:56,489 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 17:37:56,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:37:56,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:37:56,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:37:56,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:37:56,521 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:37:56,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:37:56,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:37:56,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:37:56,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:37:56,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:37:56,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:37:56,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:37:56,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:37:56,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:37:56,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:37:56,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:37:56,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:37:56,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:37:56,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:37:56,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:37:56,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:37:56,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:37:56,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:37:56,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:37:56,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:37:56,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:37:56,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:37:56,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:37:56,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:37:56,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:37:56,930 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:37:56,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-01-06 17:37:57,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1ba1ca3f/aca0e845b39644c2a4b8f4e687f4724f/FLAGe60f749cc [2021-01-06 17:37:57,563 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:37:57,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-01-06 17:37:57,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1ba1ca3f/aca0e845b39644c2a4b8f4e687f4724f/FLAGe60f749cc [2021-01-06 17:37:57,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1ba1ca3f/aca0e845b39644c2a4b8f4e687f4724f [2021-01-06 17:37:57,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:37:57,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:37:57,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:37:57,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:37:57,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:37:57,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:37:57" (1/1) ... [2021-01-06 17:37:57,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5318e7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:57, skipping insertion in model container [2021-01-06 17:37:57,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:37:57" (1/1) ... [2021-01-06 17:37:57,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:37:58,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:37:58,188 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/fermat1-ll_valuebound2.c[535,548] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~R~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2021-01-06 17:37:58,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:37:58,227 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:37:58,246 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/fermat1-ll_valuebound2.c[535,548] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~R~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2021-01-06 17:37:58,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:37:58,276 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:37:58,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58 WrapperNode [2021-01-06 17:37:58,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:37:58,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:37:58,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:37:58,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:37:58,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:37:58,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:37:58,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:37:58,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:37:58,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (1/1) ... [2021-01-06 17:37:58,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:37:58,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:37:58,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:37:58,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:37:58,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (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 17:37:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:37:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:37:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:37:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:37:58,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:37:58,921 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-01-06 17:37:58,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:37:58 BoogieIcfgContainer [2021-01-06 17:37:58,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:37:58,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:37:58,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:37:58,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:37:58,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:37:57" (1/3) ... [2021-01-06 17:37:58,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f661a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:37:58, skipping insertion in model container [2021-01-06 17:37:58,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:37:58" (2/3) ... [2021-01-06 17:37:58,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f661a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:37:58, skipping insertion in model container [2021-01-06 17:37:58,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:37:58" (3/3) ... [2021-01-06 17:37:58,934 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound2.c [2021-01-06 17:37:58,941 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:37:58,946 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-01-06 17:37:58,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 17:37:58,996 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:37:58,997 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:37:58,997 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:37:58,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:37:58,997 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:37:58,997 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:37:58,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:37:58,998 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:37:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-01-06 17:37:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:37:59,021 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:59,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:59,022 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:37:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:59,028 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-01-06 17:37:59,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:59,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497284532] [2021-01-06 17:37:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:59,238 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 17:37:59,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497284532] [2021-01-06 17:37:59,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:59,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:37:59,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675263091] [2021-01-06 17:37:59,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:37:59,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:59,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:37:59,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:37:59,264 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2021-01-06 17:37:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:37:59,284 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2021-01-06 17:37:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:37:59,286 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 17:37:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:37:59,295 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:37:59,296 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 17:37:59,299 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 17:37:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 17:37:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-01-06 17:37:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-06 17:37:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-01-06 17:37:59,336 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 13 [2021-01-06 17:37:59,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:37:59,336 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-01-06 17:37:59,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:37:59,336 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-01-06 17:37:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:37:59,337 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:37:59,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:37:59,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:37:59,338 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:37:59,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:37:59,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-01-06 17:37:59,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:37:59,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994445477] [2021-01-06 17:37:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:37:59,359 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:37:59,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81589293] [2021-01-06 17:37:59,360 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 17:37:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:37:59,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:37:59,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:37:59,756 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 17:37:59,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994445477] [2021-01-06 17:37:59,757 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:37:59,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81589293] [2021-01-06 17:37:59,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:37:59,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:37:59,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539498100] [2021-01-06 17:37:59,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:37:59,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:37:59,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:37:59,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:37:59,762 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 6 states. [2021-01-06 17:38:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:06,035 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-01-06 17:38:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:38:06,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-06 17:38:06,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:06,039 INFO L225 Difference]: With dead ends: 50 [2021-01-06 17:38:06,040 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 17:38:06,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:38:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 17:38:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2021-01-06 17:38:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 17:38:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-01-06 17:38:06,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 13 [2021-01-06 17:38:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:06,052 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-01-06 17:38:06,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:38:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-01-06 17:38:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:38:06,054 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:06,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:06,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:38:06,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:06,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:06,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2131977584, now seen corresponding path program 1 times [2021-01-06 17:38:06,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:06,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298226703] [2021-01-06 17:38:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:06,295 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:06,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921447198] [2021-01-06 17:38:06,296 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 17:38:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:06,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:38:06,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:38:06,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298226703] [2021-01-06 17:38:06,655 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:38:06,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921447198] [2021-01-06 17:38:06,659 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:38:06,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:06,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:38:06,662 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:38:06,662 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:38:06,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:38:06,899 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:38:06,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:38:06 BoogieIcfgContainer [2021-01-06 17:38:06,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:38:06,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:38:06,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:38:06,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:38:06,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:37:58" (3/4) ... [2021-01-06 17:38:06,918 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:38:06,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:38:06,922 INFO L168 Benchmark]: Toolchain (without parser) took 8959.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 133.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 78.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:06,924 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:06,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:06,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:06,930 INFO L168 Benchmark]: Boogie Preprocessor took 29.23 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 113.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:06,936 INFO L168 Benchmark]: RCFGBuilder took 570.59 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 130.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:06,937 INFO L168 Benchmark]: TraceAbstraction took 7975.04 ms. Allocated memory is still 151.0 MB. Free memory was 130.6 MB in the beginning and 49.8 MB in the end (delta: 80.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:06,938 INFO L168 Benchmark]: Witness Printer took 17.56 ms. Allocated memory is still 151.0 MB. Free memory was 49.8 MB in the beginning and 133.5 MB in the end (delta: -83.7 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:06,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 311.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.23 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 113.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 570.59 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 130.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7975.04 ms. Allocated memory is still 151.0 MB. Free memory was 130.6 MB in the beginning and 49.8 MB in the end (delta: 80.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. * Witness Printer took 17.56 ms. Allocated memory is still 151.0 MB. Free memory was 49.8 MB in the beginning and 133.5 MB in the end (delta: -83.7 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int A, R; [L21] long long u, v, r; [L22] A = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L24] R = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A [L35] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L37] COND TRUE !(r != 0) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 7.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 31 SDslu, 52 SDs, 0 SdLazy, 51 SolverSat, 5 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, 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, 2 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1488 SizeOfPredicates, 8 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...