/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/array-programs/partial_mod_count_limited_gen.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 10:33:00,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 10:33:00,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 10:33:00,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 10:33:00,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 10:33:00,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 10:33:00,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 10:33:00,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 10:33:00,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 10:33:00,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 10:33:00,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 10:33:00,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 10:33:00,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 10:33:00,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 10:33:00,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 10:33:00,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 10:33:00,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 10:33:00,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 10:33:00,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 10:33:00,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 10:33:00,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 10:33:00,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 10:33:00,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 10:33:00,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 10:33:00,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 10:33:00,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 10:33:00,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 10:33:00,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 10:33:00,555 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 10:33:00,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 10:33:00,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 10:33:00,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 10:33:00,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 10:33:00,587 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 10:33:00,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 10:33:00,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 10:33:00,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 10:33:00,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 10:33:00,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 10:33:00,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 10:33:00,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 10:33:00,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 10:33:00,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 10:33:00,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 10:33:00,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 10:33:00,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 10:33:00,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:33:00,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 10:33:00,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 10:33:00,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 10:33:00,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 10:33:00,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 10:33:00,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 10:33:00,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 10:33:00,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 10:33:00,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 10:33:01,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 10:33:01,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 10:33:01,006 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 10:33:01,007 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 10:33:01,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2021-01-06 10:33:01,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/263f1b483/49b95f3135be4d7e81d996b62ed9c038/FLAGfd1f47587 [2021-01-06 10:33:01,765 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 10:33:01,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2021-01-06 10:33:01,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/263f1b483/49b95f3135be4d7e81d996b62ed9c038/FLAGfd1f47587 [2021-01-06 10:33:02,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/263f1b483/49b95f3135be4d7e81d996b62ed9c038 [2021-01-06 10:33:02,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 10:33:02,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 10:33:02,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 10:33:02,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 10:33:02,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 10:33:02,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69dd64d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02, skipping insertion in model container [2021-01-06 10:33:02,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 10:33:02,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 10:33:02,353 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/array-programs/partial_mod_count_limited_gen.c[333,346] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 10:33:02,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:33:02,393 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 10:33:02,409 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/array-programs/partial_mod_count_limited_gen.c[333,346] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 10:33:02,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:33:02,439 INFO L208 MainTranslator]: Completed translation [2021-01-06 10:33:02,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02 WrapperNode [2021-01-06 10:33:02,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 10:33:02,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 10:33:02,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 10:33:02,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 10:33:02,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 10:33:02,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 10:33:02,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 10:33:02,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 10:33:02,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (1/1) ... [2021-01-06 10:33:02,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 10:33:02,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 10:33:02,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 10:33:02,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 10:33:02,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (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 10:33:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 10:33:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 10:33:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 10:33:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 10:33:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 10:33:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 10:33:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 10:33:03,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 10:33:03,099 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-01-06 10:33:03,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:33:03 BoogieIcfgContainer [2021-01-06 10:33:03,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 10:33:03,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 10:33:03,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 10:33:03,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 10:33:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 10:33:02" (1/3) ... [2021-01-06 10:33:03,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397e1a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:33:03, skipping insertion in model container [2021-01-06 10:33:03,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:33:02" (2/3) ... [2021-01-06 10:33:03,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397e1a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:33:03, skipping insertion in model container [2021-01-06 10:33:03,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:33:03" (3/3) ... [2021-01-06 10:33:03,122 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_gen.c [2021-01-06 10:33:03,132 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 10:33:03,138 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 10:33:03,202 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 10:33:03,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 10:33:03,249 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 10:33:03,249 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 10:33:03,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 10:33:03,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 10:33:03,250 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 10:33:03,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 10:33:03,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 10:33:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-06 10:33:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 10:33:03,291 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:33:03,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:33:03,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:33:03,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:33:03,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1209811911, now seen corresponding path program 1 times [2021-01-06 10:33:03,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:33:03,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298296763] [2021-01-06 10:33:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:33:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:33:03,585 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 10:33:03,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298296763] [2021-01-06 10:33:03,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:33:03,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 10:33:03,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109821405] [2021-01-06 10:33:03,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 10:33:03,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:33:03,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 10:33:03,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:33:03,613 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-01-06 10:33:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:33:03,634 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2021-01-06 10:33:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 10:33:03,636 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 10:33:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:33:03,648 INFO L225 Difference]: With dead ends: 43 [2021-01-06 10:33:03,648 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 10:33:03,652 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 10:33:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 10:33:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 10:33:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 10:33:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-01-06 10:33:03,694 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2021-01-06 10:33:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:33:03,694 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-01-06 10:33:03,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 10:33:03,695 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-01-06 10:33:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 10:33:03,696 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:33:03,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:33:03,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 10:33:03,697 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:33:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:33:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash 171311037, now seen corresponding path program 1 times [2021-01-06 10:33:03,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:33:03,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142735251] [2021-01-06 10:33:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:33:03,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:33:03,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556834600] [2021-01-06 10:33:03,718 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 10:33:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:33:03,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 10:33:03,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:33:03,961 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 10:33:03,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142735251] [2021-01-06 10:33:03,962 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:33:03,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556834600] [2021-01-06 10:33:03,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:33:03,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:33:03,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376618480] [2021-01-06 10:33:03,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:33:03,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:33:03,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:33:03,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:33:03,967 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2021-01-06 10:33:06,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:33:06,098 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-01-06 10:33:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:33:06,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 10:33:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:33:06,100 INFO L225 Difference]: With dead ends: 35 [2021-01-06 10:33:06,100 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 10:33:06,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:33:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 10:33:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2021-01-06 10:33:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 10:33:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-01-06 10:33:06,107 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2021-01-06 10:33:06,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:33:06,108 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-01-06 10:33:06,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:33:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-01-06 10:33:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 10:33:06,109 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:33:06,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:33:06,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 10:33:06,323 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:33:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:33:06,325 INFO L82 PathProgramCache]: Analyzing trace with hash -109052629, now seen corresponding path program 1 times [2021-01-06 10:33:06,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:33:06,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885388236] [2021-01-06 10:33:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:33:06,344 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:33:06,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4885525] [2021-01-06 10:33:06,344 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 10:33:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:33:06,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:33:06,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:33:06,500 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 10:33:06,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885388236] [2021-01-06 10:33:06,500 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:33:06,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4885525] [2021-01-06 10:33:06,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:33:06,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 10:33:06,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334770435] [2021-01-06 10:33:06,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:33:06,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:33:06,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:33:06,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:33:06,504 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 5 states. [2021-01-06 10:33:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:33:08,617 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-01-06 10:33:08,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:33:08,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 10:33:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:33:08,619 INFO L225 Difference]: With dead ends: 40 [2021-01-06 10:33:08,619 INFO L226 Difference]: Without dead ends: 32 [2021-01-06 10:33:08,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:33:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-01-06 10:33:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-01-06 10:33:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 10:33:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-01-06 10:33:08,627 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2021-01-06 10:33:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:33:08,627 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-01-06 10:33:08,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:33:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-01-06 10:33:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 10:33:08,628 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:33:08,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:33:08,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:33:08,845 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:33:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:33:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1516161923, now seen corresponding path program 2 times [2021-01-06 10:33:08,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:33:08,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947554725] [2021-01-06 10:33:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:33:08,875 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:33:08,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518133835] [2021-01-06 10:33:08,876 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