/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_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:50:31,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:50:31,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:50:31,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:50:31,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:50:31,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:50:31,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:50:31,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:50:31,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:50:31,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:50:31,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:50:31,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:50:31,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:50:31,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:50:31,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:50:31,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:50:31,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:50:31,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:50:31,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:50:31,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:50:31,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:50:31,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:50:31,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:50:31,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:50:31,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:50:31,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:50:31,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:50:31,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:50:31,906 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 17:50:31,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:50:31,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:50:31,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:50:31,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:50:31,936 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:50:31,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:50:31,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:50:31,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:50:31,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:50:31,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:50:31,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:50:31,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:50:31,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:50:31,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:50:31,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:50:31,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:50:31,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:50:31,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:50:31,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:50:31,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:50:31,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:50:31,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:50:31,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:50:31,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:50:31,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:50:31,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:50:32,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:50:32,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:50:32,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:50:32,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:50:32,366 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:50:32,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound100.c [2021-01-06 17:50:32,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5517f077f/d3ab009a6fd143ce98ffce86b79851db/FLAGe88fac560 [2021-01-06 17:50:33,139 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:50:33,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound100.c [2021-01-06 17:50:33,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5517f077f/d3ab009a6fd143ce98ffce86b79851db/FLAGe88fac560 [2021-01-06 17:50:33,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5517f077f/d3ab009a6fd143ce98ffce86b79851db [2021-01-06 17:50:33,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:50:33,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:50:33,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:33,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:50:33,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:50:33,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab33c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33, skipping insertion in model container [2021-01-06 17:50:33,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:50:33,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:50:33,709 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_valuebound100.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,] [2021-01-06 17:50:33,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:33,758 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:50:33,772 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_valuebound100.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,] [2021-01-06 17:50:33,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:33,801 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:50:33,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33 WrapperNode [2021-01-06 17:50:33,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:33,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:33,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:50:33,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:50:33,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:33,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:50:33,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:50:33,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:50:33,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (1/1) ... [2021-01-06 17:50:33,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:50:33,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:50:33,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:50:33,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:50:33,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (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 17:50:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:50:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:50:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:50:34,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:50:34,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:50:34,421 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-01-06 17:50:34,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:34 BoogieIcfgContainer [2021-01-06 17:50:34,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:50:34,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:50:34,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:50:34,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:50:34,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:50:33" (1/3) ... [2021-01-06 17:50:34,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da7adc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:34, skipping insertion in model container [2021-01-06 17:50:34,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:33" (2/3) ... [2021-01-06 17:50:34,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da7adc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:34, skipping insertion in model container [2021-01-06 17:50:34,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:34" (3/3) ... [2021-01-06 17:50:34,462 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound100.c [2021-01-06 17:50:34,484 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:50:34,510 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-01-06 17:50:34,555 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 17:50:34,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:50:34,586 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:50:34,586 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:50:34,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:50:34,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:50:34,587 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:50:34,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:50:34,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:50:34,604 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:50:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:50:34,611 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:34,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:34,612 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]=== [2021-01-06 17:50:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:34,619 INFO L82 PathProgramCache]: Analyzing trace with hash 822857436, now seen corresponding path program 1 times [2021-01-06 17:50:34,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:34,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293024873] [2021-01-06 17:50:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:34,855 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 17:50:34,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293024873] [2021-01-06 17:50:34,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:34,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:50:34,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934740890] [2021-01-06 17:50:34,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:50:34,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:34,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:50:34,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:50:34,891 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:50:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:34,924 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2021-01-06 17:50:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:50:34,926 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2021-01-06 17:50:34,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:34,955 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:50:34,956 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:50:34,963 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 17:50:34,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:50:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:50:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:50:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-01-06 17:50:35,020 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 17 [2021-01-06 17:50:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:35,021 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-01-06 17:50:35,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:50:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-01-06 17:50:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:50:35,023 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:35,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:35,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:50:35,025 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]=== [2021-01-06 17:50:35,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:35,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2114165096, now seen corresponding path program 1 times [2021-01-06 17:50:35,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:35,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414405455] [2021-01-06 17:50:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:35,103 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:35,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781694331] [2021-01-06 17:50:35,104 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 17:50:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:35,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:50:35,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:35,487 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 17:50:35,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414405455] [2021-01-06 17:50:35,488 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:35,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781694331] [2021-01-06 17:50:35,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:35,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:50:35,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185982325] [2021-01-06 17:50:35,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:50:35,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:35,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:50:35,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:50:35,498 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2021-01-06 17:50:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:35,815 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2021-01-06 17:50:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:35,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-06 17:50:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:35,817 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:50:35,817 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:50:35,819 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 [2021-01-06 17:50:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:50:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2021-01-06 17:50:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:50:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-01-06 17:50:35,839 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 17 [2021-01-06 17:50:35,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:35,843 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-01-06 17:50:35,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:50:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-01-06 17:50:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:50:35,844 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:35,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:36,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:50:36,059 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]=== [2021-01-06 17:50:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:36,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1696926548, now seen corresponding path program 1 times [2021-01-06 17:50:36,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:36,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22047181] [2021-01-06 17:50:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:36,084 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:36,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089899207] [2021-01-06 17:50:36,085 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