/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_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:00:12,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:00:12,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:00:12,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:00:12,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:00:12,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:00:12,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:00:12,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:00:12,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:00:12,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:00:12,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:00:12,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:00:12,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:00:12,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:00:12,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:00:12,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:00:12,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:00:12,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:00:12,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:00:12,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:00:12,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:00:12,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:00:12,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:00:12,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:00:12,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:00:12,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:00:12,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:00:12,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:00:12,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:00:12,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:00:12,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:00:12,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:00:12,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:00:12,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:00:12,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:00:12,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:00:12,928 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 08:00:12,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:00:12,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:00:12,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:00:12,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:00:12,957 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:00:12,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:00:12,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:00:12,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:00:12,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:00:12,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:00:12,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:00:12,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:00:12,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:00:12,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:00:12,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:00:12,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:00:12,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:00:12,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:00:12,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:00:12,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:00:12,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:00:12,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:00:12,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:00:12,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:00:12,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:00:12,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:00:13,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:00:13,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:00:13,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:00:13,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:00:13,352 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:00:13,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound5.c [2020-12-23 08:00:13,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25793c135/da43be997ab24468b68e259bcc252583/FLAG982fe4785 [2020-12-23 08:00:14,069 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:00:14,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound5.c [2020-12-23 08:00:14,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25793c135/da43be997ab24468b68e259bcc252583/FLAG982fe4785 [2020-12-23 08:00:14,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25793c135/da43be997ab24468b68e259bcc252583 [2020-12-23 08:00:14,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:00:14,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:00:14,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:00:14,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:00:14,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:00:14,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528db7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14, skipping insertion in model container [2020-12-23 08:00:14,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:00:14,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:00:14,609 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_valuebound5.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 08:00:14,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:00:14,640 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:00:14,652 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_valuebound5.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 08:00:14,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:00:14,679 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:00:14,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14 WrapperNode [2020-12-23 08:00:14,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:00:14,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:00:14,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:00:14,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:00:14,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:00:14,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:00:14,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:00:14,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:00:14,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (1/1) ... [2020-12-23 08:00:14,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:00:14,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:00:14,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:00:14,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:00:14,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (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 08:00:14,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:00:14,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:00:14,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:00:14,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:00:15,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:00:15,269 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-23 08:00:15,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:00:15 BoogieIcfgContainer [2020-12-23 08:00:15,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:00:15,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:00:15,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:00:15,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:00:15,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:00:14" (1/3) ... [2020-12-23 08:00:15,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6093e96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:00:15, skipping insertion in model container [2020-12-23 08:00:15,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:00:14" (2/3) ... [2020-12-23 08:00:15,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6093e96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:00:15, skipping insertion in model container [2020-12-23 08:00:15,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:00:15" (3/3) ... [2020-12-23 08:00:15,281 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound5.c [2020-12-23 08:00:15,288 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:00:15,293 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 08:00:15,314 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 08:00:15,345 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:00:15,345 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:00:15,345 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:00:15,345 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:00:15,345 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:00:15,345 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:00:15,346 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:00:15,346 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:00:15,364 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 08:00:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 08:00:15,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:00:15,371 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 08:00:15,371 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 08:00:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:00:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 822857436, now seen corresponding path program 1 times [2020-12-23 08:00:15,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:00:15,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705675092] [2020-12-23 08:00:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:00:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:00:15,561 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 08:00:15,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705675092] [2020-12-23 08:00:15,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:00:15,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:00:15,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413203648] [2020-12-23 08:00:15,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:00:15,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:00:15,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:00:15,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:00:15,586 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 08:00:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:00:15,608 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2020-12-23 08:00:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:00:15,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-12-23 08:00:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:00:15,619 INFO L225 Difference]: With dead ends: 79 [2020-12-23 08:00:15,620 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 08:00:15,623 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 08:00:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 08:00:15,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 08:00:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 08:00:15,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 08:00:15,664 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 17 [2020-12-23 08:00:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:00:15,665 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 08:00:15,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:00:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 08:00:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 08:00:15,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:00:15,666 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 08:00:15,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:00:15,667 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 08:00:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:00:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2114165096, now seen corresponding path program 1 times [2020-12-23 08:00:15,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:00:15,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168791361] [2020-12-23 08:00:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:00:15,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:00:15,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048848532] [2020-12-23 08:00:15,711 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 08:00:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:00:15,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 08:00:15,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:00:16,089 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 08:00:16,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168791361] [2020-12-23 08:00:16,090 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:00:16,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048848532] [2020-12-23 08:00:16,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:00:16,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 08:00:16,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386023228] [2020-12-23 08:00:16,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:00:16,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:00:16,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:00:16,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:00:16,095 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2020-12-23 08:00:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:00:16,320 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-12-23 08:00:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:00:16,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 08:00:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:00:16,323 INFO L225 Difference]: With dead ends: 62 [2020-12-23 08:00:16,323 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 08:00:16,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 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 08:00:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 08:00:16,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2020-12-23 08:00:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 08:00:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-23 08:00:16,335 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 17 [2020-12-23 08:00:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:00:16,336 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-23 08:00:16,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:00:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-23 08:00:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 08:00:16,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:00:16,338 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] [2020-12-23 08:00:16,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 08:00:16,553 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 08:00:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:00:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1696926548, now seen corresponding path program 1 times [2020-12-23 08:00:16,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:00:16,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139872978] [2020-12-23 08:00:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:00:16,602 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:00:16,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241388733] [2020-12-23 08:00:16,605 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