/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/lcm1_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:56:10,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:56:10,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:56:10,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:56:10,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:56:10,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:56:10,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:56:10,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:56:10,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:56:10,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:56:10,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:56:10,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:56:10,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:56:10,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:56:10,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:56:10,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:56:10,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:56:10,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:56:10,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:56:10,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:56:10,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:56:10,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:56:10,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:56:11,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:56:11,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:56:11,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:56:11,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:56:11,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:56:11,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:56:11,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:56:11,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:56:11,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:56:11,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:56:11,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:56:11,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:56:11,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:56:11,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:56:11,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:56:11,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:56:11,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:56:11,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:56:11,101 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:56:11,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:56:11,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:56:11,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:56:11,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:56:11,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:56:11,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:56:11,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:56:11,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:56:11,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:56:11,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:56:11,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:56:11,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:56:11,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:56:11,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:56:11,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:56:11,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:56:11,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:56:11,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:56:11,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:56:11,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:56:11,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:56:11,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:56:11,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:56:11,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:56:11,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:56:11,562 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:56:11,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound5.c [2020-12-23 07:56:11,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a79d6864d/d123355fd2fe450ab96eca0cb8fee653/FLAG84f3f0a15 [2020-12-23 07:56:12,184 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:56:12,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound5.c [2020-12-23 07:56:12,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a79d6864d/d123355fd2fe450ab96eca0cb8fee653/FLAG84f3f0a15 [2020-12-23 07:56:12,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a79d6864d/d123355fd2fe450ab96eca0cb8fee653 [2020-12-23 07:56:12,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:56:12,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:56:12,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:56:12,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:56:12,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:56:12,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5526fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12, skipping insertion in model container [2020-12-23 07:56:12,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:56:12,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:56:12,745 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/lcm1_unwindbound5.c[552,565] 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[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~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[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2020-12-23 07:56:12,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:56:12,779 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:56:12,796 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/lcm1_unwindbound5.c[552,565] 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[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~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[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2020-12-23 07:56:12,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:56:12,827 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:56:12,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12 WrapperNode [2020-12-23 07:56:12,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:56:12,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:56:12,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:56:12,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:56:12,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:56:12,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:56:12,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:56:12,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:56:12,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (1/1) ... [2020-12-23 07:56:12,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:56:12,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:56:12,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:56:12,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:56:12,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (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 [2020-12-23 07:56:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:56:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:56:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:56:13,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:56:13,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:56:13,534 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-23 07:56:13,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:56:13 BoogieIcfgContainer [2020-12-23 07:56:13,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:56:13,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:56:13,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:56:13,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:56:13,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:56:12" (1/3) ... [2020-12-23 07:56:13,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac56eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:56:13, skipping insertion in model container [2020-12-23 07:56:13,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:56:12" (2/3) ... [2020-12-23 07:56:13,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac56eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:56:13, skipping insertion in model container [2020-12-23 07:56:13,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:56:13" (3/3) ... [2020-12-23 07:56:13,544 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound5.c [2020-12-23 07:56:13,551 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:56:13,556 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 07:56:13,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 07:56:13,608 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:56:13,609 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:56:13,609 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:56:13,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:56:13,610 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:56:13,610 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:56:13,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:56:13,610 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:56:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-23 07:56:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:56:13,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:56:13,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:56:13,635 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:56:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:56:13,641 INFO L82 PathProgramCache]: Analyzing trace with hash -172276425, now seen corresponding path program 1 times [2020-12-23 07:56:13,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:56:13,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843386130] [2020-12-23 07:56:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:56:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:56:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:56:13,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843386130] [2020-12-23 07:56:13,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:56:13,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:56:13,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645397874] [2020-12-23 07:56:13,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:56:13,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:56:13,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:56:13,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:56:13,846 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-12-23 07:56:13,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:56:13,868 INFO L93 Difference]: Finished difference Result 77 states and 110 transitions. [2020-12-23 07:56:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:56:13,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-23 07:56:13,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:56:13,880 INFO L225 Difference]: With dead ends: 77 [2020-12-23 07:56:13,880 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 07:56:13,883 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 [2020-12-23 07:56:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 07:56:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-23 07:56:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 07:56:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-12-23 07:56:13,922 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 14 [2020-12-23 07:56:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:56:13,923 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-12-23 07:56:13,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:56:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-12-23 07:56:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:56:13,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:56:13,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:56:13,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:56:13,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:56:13,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:56:13,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1061593710, now seen corresponding path program 1 times [2020-12-23 07:56:13,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:56:13,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669087134] [2020-12-23 07:56:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:56:13,953 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:56:13,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846681824] [2020-12-23 07:56:13,954 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 [2020-12-23 07:56:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:56:14,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:56:14,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:56:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:56:14,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669087134] [2020-12-23 07:56:14,288 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:56:14,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846681824] [2020-12-23 07:56:14,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:56:14,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:56:14,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779972071] [2020-12-23 07:56:14,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:56:14,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:56:14,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:56:14,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:56:14,292 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 6 states. [2020-12-23 07:56:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:56:14,735 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-12-23 07:56:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:56:14,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 07:56:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:56:14,738 INFO L225 Difference]: With dead ends: 72 [2020-12-23 07:56:14,738 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:56:14,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:56:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:56:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2020-12-23 07:56:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 07:56:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-12-23 07:56:14,751 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 14 [2020-12-23 07:56:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:56:14,751 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-12-23 07:56:14,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:56:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-12-23 07:56:14,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:56:14,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:56:14,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:56:14,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:56:14,969 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:56:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:56:14,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1450344358, now seen corresponding path program 1 times [2020-12-23 07:56:14,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:56:14,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114664748] [2020-12-23 07:56:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:56:15,000 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:56:15,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800217982] [2020-12-23 07:56:15,003 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 [2020-12-23 07:56:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:56:15,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 07:56:15,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:56:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:56:15,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114664748] [2020-12-23 07:56:15,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:56:15,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800217982] [2020-12-23 07:56:15,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:56:15,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:56:15,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178202691] [2020-12-23 07:56:15,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:56:15,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:56:15,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:56:15,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:56:15,117 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 4 states. [2020-12-23 07:56:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:56:15,138 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-12-23 07:56:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:56:15,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-23 07:56:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:56:15,142 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:56:15,142 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 07:56:15,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:56:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 07:56:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-23 07:56:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:56:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-12-23 07:56:15,153 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 15 [2020-12-23 07:56:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:56:15,153 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-12-23 07:56:15,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:56:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-12-23 07:56:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:56:15,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:56:15,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:56:15,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:56:15,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:56:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:56:15,370 INFO L82 PathProgramCache]: Analyzing trace with hash -2089044929, now seen corresponding path program 1 times [2020-12-23 07:56:15,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:56:15,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505359430] [2020-12-23 07:56:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:56:15,393 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:56:15,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507055466] [2020-12-23 07:56:15,393 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