/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/bitvector/sum02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:33:26,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:33:26,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:33:26,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:33:26,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:33:26,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:33:26,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:33:26,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:33:26,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:33:26,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:33:26,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:33:26,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:33:26,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:33:26,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:33:26,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:33:26,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:33:26,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:33:26,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:33:26,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:33:26,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:33:26,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:33:26,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:33:26,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:33:26,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:33:26,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 11:33:26,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 11:33:26,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 11:33:26,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 11:33:26,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 11:33:26,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 11:33:26,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 11:33:26,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 11:33:26,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 11:33:26,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:33:26,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:33:26,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:33:26,584 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 11:33:26,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:33:26,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:33:26,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:33:26,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:33:26,642 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:33:26,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:33:26,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:33:26,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:33:26,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:33:26,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:33:26,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:33:26,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:33:26,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:33:26,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:33:26,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:33:26,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:33:26,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:33:26,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:33:26,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:33:26,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:33:26,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:33:26,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:33:26,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:33:26,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:33:26,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:33:26,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:33:27,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:33:27,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:33:27,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:33:27,115 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:33:27,116 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:33:27,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/sum02-2.c [2021-01-06 11:33:27,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bca57898b/6c6e24e5b1bc42aab256edbb5cfc63bf/FLAGa26480c68 [2021-01-06 11:33:27,751 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:33:27,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-2.c [2021-01-06 11:33:27,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bca57898b/6c6e24e5b1bc42aab256edbb5cfc63bf/FLAGa26480c68 [2021-01-06 11:33:28,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bca57898b/6c6e24e5b1bc42aab256edbb5cfc63bf [2021-01-06 11:33:28,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:33:28,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:33:28,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:33:28,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:33:28,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:33:28,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7578846f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28, skipping insertion in model container [2021-01-06 11:33:28,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:33:28,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 11:33:28,339 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-2.c[406,419] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sn~0,] [2021-01-06 11:33:28,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:33:28,374 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 11:33:28,386 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/bitvector/sum02-2.c[406,419] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sn~0,] [2021-01-06 11:33:28,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:33:28,407 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:33:28,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28 WrapperNode [2021-01-06 11:33:28,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:33:28,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:33:28,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:33:28,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:33:28,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:33:28,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:33:28,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:33:28,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:33:28,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (1/1) ... [2021-01-06 11:33:28,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:33:28,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:33:28,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:33:28,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:33:28,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (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 11:33:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:33:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:33:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:33:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:33:28,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:33:28,877 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-06 11:33:28,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:33:28 BoogieIcfgContainer [2021-01-06 11:33:28,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:33:28,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:33:28,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:33:28,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:33:28,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:33:28" (1/3) ... [2021-01-06 11:33:28,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a1c54d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:33:28, skipping insertion in model container [2021-01-06 11:33:28,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:33:28" (2/3) ... [2021-01-06 11:33:28,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a1c54d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:33:28, skipping insertion in model container [2021-01-06 11:33:28,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:33:28" (3/3) ... [2021-01-06 11:33:28,903 INFO L111 eAbstractionObserver]: Analyzing ICFG sum02-2.c [2021-01-06 11:33:28,917 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:33:28,928 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:33:28,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:33:29,045 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:33:29,046 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:33:29,046 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:33:29,046 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:33:29,046 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:33:29,046 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:33:29,046 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:33:29,047 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:33:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-01-06 11:33:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 11:33:29,082 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:33:29,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:33:29,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:33:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:33:29,091 INFO L82 PathProgramCache]: Analyzing trace with hash 119658891, now seen corresponding path program 1 times [2021-01-06 11:33:29,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:33:29,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445752590] [2021-01-06 11:33:29,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:33:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:33:29,347 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 11:33:29,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445752590] [2021-01-06 11:33:29,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:33:29,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 11:33:29,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684656835] [2021-01-06 11:33:29,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 11:33:29,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:33:29,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 11:33:29,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 11:33:29,378 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2021-01-06 11:33:29,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:33:29,393 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-01-06 11:33:29,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 11:33:29,395 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 11:33:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:33:29,410 INFO L225 Difference]: With dead ends: 23 [2021-01-06 11:33:29,410 INFO L226 Difference]: Without dead ends: 10 [2021-01-06 11:33:29,414 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 11:33:29,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-06 11:33:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-06 11:33:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-06 11:33:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-01-06 11:33:29,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-01-06 11:33:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:33:29,454 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-01-06 11:33:29,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 11:33:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-01-06 11:33:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 11:33:29,455 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:33:29,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:33:29,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:33:29,456 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:33:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:33:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash 176738447, now seen corresponding path program 1 times [2021-01-06 11:33:29,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:33:29,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268607120] [2021-01-06 11:33:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:33:29,505 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 11:33:29,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258968096] [2021-01-06 11:33:29,505 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 11:33:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:33:29,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 11:33:29,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:33:29,633 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 11:33:29,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268607120] [2021-01-06 11:33:29,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 11:33:29,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258968096] [2021-01-06 11:33:29,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:33:29,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 11:33:29,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369045909] [2021-01-06 11:33:29,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 11:33:29,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:33:29,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 11:33:29,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 11:33:29,638 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2021-01-06 11:33:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:33:29,681 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-01-06 11:33:29,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 11:33:29,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-01-06 11:33:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:33:29,682 INFO L225 Difference]: With dead ends: 15 [2021-01-06 11:33:29,682 INFO L226 Difference]: Without dead ends: 11 [2021-01-06 11:33:29,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 11:33:29,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-01-06 11:33:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-01-06 11:33:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-01-06 11:33:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-01-06 11:33:29,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-01-06 11:33:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:33:29,687 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-01-06 11:33:29,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 11:33:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-01-06 11:33:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 11:33:29,688 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:33:29,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:33:29,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 11:33:29,902 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:33:29,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:33:29,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1899811727, now seen corresponding path program 1 times [2021-01-06 11:33:29,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:33:29,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326513753] [2021-01-06 11:33:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:33:29,938 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 11:33:29,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655140168] [2021-01-06 11:33:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:33:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:33:30,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 11:33:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:33:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:33:30,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326513753] [2021-01-06 11:33:30,113 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 11:33:30,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655140168] [2021-01-06 11:33:30,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 11:33:30,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 11:33:30,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424427796] [2021-01-06 11:33:30,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 11:33:30,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:33:30,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 11:33:30,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 11:33:30,116 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2021-01-06 11:33:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:33:34,218 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-01-06 11:33:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 11:33:34,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-01-06 11:33:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:33:34,220 INFO L225 Difference]: With dead ends: 17 [2021-01-06 11:33:34,220 INFO L226 Difference]: Without dead ends: 13 [2021-01-06 11:33:34,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-01-06 11:33:34,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-01-06 11:33:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-01-06 11:33:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-06 11:33:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-01-06 11:33:34,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2021-01-06 11:33:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:33:34,225 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-01-06 11:33:34,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 11:33:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-01-06 11:33:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 11:33:34,227 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:33:34,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:33:34,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:33:34,440 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:33:34,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:33:34,442 INFO L82 PathProgramCache]: Analyzing trace with hash -304736301, now seen corresponding path program 2 times [2021-01-06 11:33:34,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:33:34,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541634083] [2021-01-06 11:33:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:33:34,483 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 11:33:34,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304275105] [2021-01-06 11:33:34,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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