/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:06,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:06,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:06,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:06,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:06,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:06,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:06,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:06,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:06,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:06,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:06,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:06,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:06,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:06,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:06,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:06,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:06,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:06,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:06,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:06,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:06,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:06,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:06,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:06,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:06,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:06,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:06,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:06,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:42:06,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:06,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:06,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:06,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:06,531 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:06,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:06,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:06,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:06,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:06,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:06,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:06,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:06,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:06,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:06,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:06,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:06,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:06,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:06,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:06,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:06,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:06,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:06,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:06,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:06,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:06,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:06,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:06,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:06,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:06,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:07,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:07,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:07,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:07,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:07,073 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:07,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-09-04 13:42:07,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9689aaf99/d21b22fce2dd425fb306634c6957f434/FLAGa9fa70edd [2020-09-04 13:42:07,690 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:07,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-09-04 13:42:07,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9689aaf99/d21b22fce2dd425fb306634c6957f434/FLAGa9fa70edd [2020-09-04 13:42:08,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9689aaf99/d21b22fce2dd425fb306634c6957f434 [2020-09-04 13:42:08,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:08,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:08,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:08,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:08,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:08,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4ff61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08, skipping insertion in model container [2020-09-04 13:42:08,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:08,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:08,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:08,352 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:08,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:08,477 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:08,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08 WrapperNode [2020-09-04 13:42:08,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:08,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:08,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:08,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:08,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (1/1) ... [2020-09-04 13:42:08,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:08,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:08,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:08,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:08,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:08,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:08,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-09-04 13:42:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-09-04 13:42:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:08,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:08,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-09-04 13:42:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-09-04 13:42:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:09,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:09,022 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 13:42:09,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:09 BoogieIcfgContainer [2020-09-04 13:42:09,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:09,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:09,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:09,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:09,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:08" (1/3) ... [2020-09-04 13:42:09,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502e6883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:09, skipping insertion in model container [2020-09-04 13:42:09,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:08" (2/3) ... [2020-09-04 13:42:09,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502e6883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:09, skipping insertion in model container [2020-09-04 13:42:09,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:09" (3/3) ... [2020-09-04 13:42:09,039 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2020-09-04 13:42:09,050 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:09,060 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:09,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:09,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:09,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:09,116 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:09,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:09,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:09,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:09,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:09,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-04 13:42:09,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 13:42:09,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:09,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:09,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:09,158 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2020-09-04 13:42:09,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:09,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717771705] [2020-09-04 13:42:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:09,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717771705] [2020-09-04 13:42:09,333 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-04 13:42:09,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030928954] [2020-09-04 13:42:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:09,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjunts are in the unsatisfiable core [2020-09-04 13:42:09,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 13:42:09,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:09,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 13:42:09,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109098470] [2020-09-04 13:42:09,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 13:42:09,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:09,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 13:42:09,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:42:09,508 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-09-04 13:42:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:09,543 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-09-04 13:42:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 13:42:09,545 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-09-04 13:42:09,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:09,556 INFO L225 Difference]: With dead ends: 64 [2020-09-04 13:42:09,556 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:42:09,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:42:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:42:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-04 13:42:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 13:42:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-09-04 13:42:09,611 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 37 [2020-09-04 13:42:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:09,611 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-09-04 13:42:09,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 13:42:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-09-04 13:42:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 13:42:09,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:09,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:09,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-09-04 13:42:09,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:09,825 INFO L82 PathProgramCache]: Analyzing trace with hash -991975144, now seen corresponding path program 1 times [2020-09-04 13:42:09,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:09,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377024465] [2020-09-04 13:42:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:09,846 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:09,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46940320] [2020-09-04 13:42:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:09,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-04 13:42:09,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 13:42:10,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377024465] [2020-09-04 13:42:10,027 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:10,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46940320] [2020-09-04 13:42:10,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:10,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:10,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420996336] [2020-09-04 13:42:10,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:10,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:10,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:10,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:10,031 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2020-09-04 13:42:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:10,053 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-09-04 13:42:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:10,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-04 13:42:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:10,056 INFO L225 Difference]: With dead ends: 56 [2020-09-04 13:42:10,056 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 13:42:10,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:10,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 13:42:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-09-04 13:42:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-04 13:42:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-09-04 13:42:10,066 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2020-09-04 13:42:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:10,067 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-09-04 13:42:10,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-09-04 13:42:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-04 13:42:10,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:10,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:10,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:10,286 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:10,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:10,287 INFO L82 PathProgramCache]: Analyzing trace with hash 479004822, now seen corresponding path program 1 times [2020-09-04 13:42:10,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:10,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185470884] [2020-09-04 13:42:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:10,315 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:10,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074555027] [2020-09-04 13:42:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:42:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:10,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-04 13:42:10,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:42:10,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185470884] [2020-09-04 13:42:10,409 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:10,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074555027] [2020-09-04 13:42:10,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:10,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:10,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068867522] [2020-09-04 13:42:10,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:10,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:10,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:10,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:10,412 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 3 states. [2020-09-04 13:42:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:10,442 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-09-04 13:42:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:10,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-09-04 13:42:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:10,445 INFO L225 Difference]: With dead ends: 54 [2020-09-04 13:42:10,445 INFO L226 Difference]: Without dead ends: 36 [2020-09-04 13:42:10,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-04 13:42:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-09-04 13:42:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-04 13:42:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-09-04 13:42:10,454 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 39 [2020-09-04 13:42:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:10,455 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-09-04 13:42:10,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-09-04 13:42:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 13:42:10,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:10,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:10,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:10,672 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:10,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1719401286, now seen corresponding path program 1 times [2020-09-04 13:42:10,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:10,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985940545] [2020-09-04 13:42:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:10,696 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:10,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063654527] [2020-09-04 13:42:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:10,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-04 13:42:10,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-04 13:42:10,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985940545] [2020-09-04 13:42:10,812 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:10,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063654527] [2020-09-04 13:42:10,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:10,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:10,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674499794] [2020-09-04 13:42:10,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:10,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:10,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:10,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:10,815 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2020-09-04 13:42:10,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:10,829 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2020-09-04 13:42:10,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:10,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-04 13:42:10,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:10,832 INFO L225 Difference]: With dead ends: 52 [2020-09-04 13:42:10,832 INFO L226 Difference]: Without dead ends: 37 [2020-09-04 13:42:10,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-04 13:42:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-09-04 13:42:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-04 13:42:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-09-04 13:42:10,839 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 48 [2020-09-04 13:42:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:10,841 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-09-04 13:42:10,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:10,842 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-09-04 13:42:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-04 13:42:10,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:10,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:11,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:11,056 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:11,057 INFO L82 PathProgramCache]: Analyzing trace with hash 494084840, now seen corresponding path program 1 times [2020-09-04 13:42:11,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:11,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545537751] [2020-09-04 13:42:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:11,088 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:11,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074581204] [2020-09-04 13:42:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:11,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:42:11,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-04 13:42:11,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545537751] [2020-09-04 13:42:11,181 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:11,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074581204] [2020-09-04 13:42:11,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:11,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:11,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694576271] [2020-09-04 13:42:11,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:11,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:11,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:11,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:11,183 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2020-09-04 13:42:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:11,215 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2020-09-04 13:42:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:11,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-04 13:42:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:11,219 INFO L225 Difference]: With dead ends: 63 [2020-09-04 13:42:11,219 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 13:42:11,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 13:42:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-04 13:42:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 13:42:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-04 13:42:11,229 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 50 [2020-09-04 13:42:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:11,229 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-04 13:42:11,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-04 13:42:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-04 13:42:11,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:11,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:11,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:11,444 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:11,445 INFO L82 PathProgramCache]: Analyzing trace with hash 125205893, now seen corresponding path program 1 times [2020-09-04 13:42:11,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:11,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089616773] [2020-09-04 13:42:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:42:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:42:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:42:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-04 13:42:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 13:42:11,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089616773] [2020-09-04 13:42:11,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399159827] [2020-09-04 13:42:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:11,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:42:11,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-04 13:42:11,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:42:11,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 8 [2020-09-04 13:42:11,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85733464] [2020-09-04 13:42:11,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:42:11,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:42:11,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:42:11,744 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 8 states. [2020-09-04 13:42:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:12,037 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2020-09-04 13:42:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:42:12,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-04 13:42:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:12,039 INFO L225 Difference]: With dead ends: 76 [2020-09-04 13:42:12,039 INFO L226 Difference]: Without dead ends: 47 [2020-09-04 13:42:12,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:42:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-04 13:42:12,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-04 13:42:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-04 13:42:12,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-09-04 13:42:12,050 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 50 [2020-09-04 13:42:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:12,050 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-09-04 13:42:12,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:42:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-09-04 13:42:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-04 13:42:12,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:12,052 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:12,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:12,269 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:12,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1369912335, now seen corresponding path program 2 times [2020-09-04 13:42:12,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:12,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038239004] [2020-09-04 13:42:12,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:12,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:12,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:42:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:42:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:12,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:42:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 13:42:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-04 13:42:12,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038239004] [2020-09-04 13:42:12,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834780182] [2020-09-04 13:42:12,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:12,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:42:12,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:42:12,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:42:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-04 13:42:12,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:42:12,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-09-04 13:42:12,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586921215] [2020-09-04 13:42:12,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:42:12,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:12,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:42:12,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:42:12,499 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 7 states. [2020-09-04 13:42:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:12,709 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2020-09-04 13:42:12,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:42:12,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-09-04 13:42:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:12,712 INFO L225 Difference]: With dead ends: 80 [2020-09-04 13:42:12,712 INFO L226 Difference]: Without dead ends: 48 [2020-09-04 13:42:12,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:42:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-04 13:42:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-09-04 13:42:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 13:42:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-09-04 13:42:12,721 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 61 [2020-09-04 13:42:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:12,721 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-09-04 13:42:12,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:42:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-09-04 13:42:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-04 13:42:12,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:12,723 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:12,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:12,939 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:12,940 INFO L82 PathProgramCache]: Analyzing trace with hash 190779759, now seen corresponding path program 3 times [2020-09-04 13:42:12,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:12,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654961382] [2020-09-04 13:42:12,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:42:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 13:42:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-04 13:42:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-04 13:42:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-04 13:42:13,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654961382] [2020-09-04 13:42:13,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982849380] [2020-09-04 13:42:13,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:13,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-04 13:42:13,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:42:13,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:42:13,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-09-04 13:42:13,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:13,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2020-09-04 13:42:13,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413981557] [2020-09-04 13:42:13,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:42:13,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:13,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:42:13,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:42:13,184 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 4 states. [2020-09-04 13:42:13,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:13,220 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-09-04 13:42:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:42:13,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-04 13:42:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:13,222 INFO L225 Difference]: With dead ends: 78 [2020-09-04 13:42:13,222 INFO L226 Difference]: Without dead ends: 50 [2020-09-04 13:42:13,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:42:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-04 13:42:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-09-04 13:42:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-04 13:42:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-09-04 13:42:13,230 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 63 [2020-09-04 13:42:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:13,231 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-09-04 13:42:13,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:42:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-09-04 13:42:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-04 13:42:13,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:13,233 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:13,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-09-04 13:42:13,449 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:13,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1896448358, now seen corresponding path program 1 times [2020-09-04 13:42:13,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:13,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16403426] [2020-09-04 13:42:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:42:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 13:42:13,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16403426] [2020-09-04 13:42:13,552 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-04 13:42:13,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462959522] [2020-09-04 13:42:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-04 13:42:13,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-09-04 13:42:13,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:13,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-04 13:42:13,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988404440] [2020-09-04 13:42:13,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:42:13,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:42:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:42:13,645 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-09-04 13:42:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:13,671 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-09-04 13:42:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:13,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-09-04 13:42:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:13,672 INFO L225 Difference]: With dead ends: 78 [2020-09-04 13:42:13,673 INFO L226 Difference]: Without dead ends: 48 [2020-09-04 13:42:13,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:42:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-04 13:42:13,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-09-04 13:42:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 13:42:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-04 13:42:13,681 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 72 [2020-09-04 13:42:13,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:13,681 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-04 13:42:13,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:42:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-04 13:42:13,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-04 13:42:13,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:13,683 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:13,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:13,898 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:13,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2135261480, now seen corresponding path program 2 times [2020-09-04 13:42:13,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:13,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163397093] [2020-09-04 13:42:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:42:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 13:42:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:42:14,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163397093] [2020-09-04 13:42:14,058 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-04 13:42:14,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170900882] [2020-09-04 13:42:14,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:14,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:42:14,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:42:14,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:42:14,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-09-04 13:42:14,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:14,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 13:42:14,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739940699] [2020-09-04 13:42:14,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:42:14,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:42:14,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:42:14,165 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-09-04 13:42:14,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:14,197 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-09-04 13:42:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:42:14,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-09-04 13:42:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:14,199 INFO L225 Difference]: With dead ends: 79 [2020-09-04 13:42:14,199 INFO L226 Difference]: Without dead ends: 49 [2020-09-04 13:42:14,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:42:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-04 13:42:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-04 13:42:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-04 13:42:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-09-04 13:42:14,206 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 74 [2020-09-04 13:42:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:14,206 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-09-04 13:42:14,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:42:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-09-04 13:42:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-04 13:42:14,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:14,208 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:14,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:14,422 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:14,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:14,423 INFO L82 PathProgramCache]: Analyzing trace with hash -293562262, now seen corresponding path program 3 times [2020-09-04 13:42:14,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:14,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971477460] [2020-09-04 13:42:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:14,447 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:14,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556381280] [2020-09-04 13:42:14,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:15,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-04 13:42:15,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:42:15,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:42:15,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-09-04 13:42:15,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971477460] [2020-09-04 13:42:15,146 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:15,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556381280] [2020-09-04 13:42:15,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:15,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-04 13:42:15,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119363461] [2020-09-04 13:42:15,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:42:15,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:15,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:42:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:42:15,149 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 4 states. [2020-09-04 13:42:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:15,180 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-09-04 13:42:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:42:15,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-04 13:42:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:15,182 INFO L225 Difference]: With dead ends: 72 [2020-09-04 13:42:15,182 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 13:42:15,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:42:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 13:42:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-09-04 13:42:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-04 13:42:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-09-04 13:42:15,190 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 76 [2020-09-04 13:42:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:15,190 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-09-04 13:42:15,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:42:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-09-04 13:42:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-04 13:42:15,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:15,192 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:15,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-04 13:42:15,397 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:15,398 INFO L82 PathProgramCache]: Analyzing trace with hash 704023820, now seen corresponding path program 4 times [2020-09-04 13:42:15,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:15,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036519808] [2020-09-04 13:42:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:15,415 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:15,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164821434] [2020-09-04 13:42:15,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:15,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-04 13:42:15,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:42:15,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:42:15,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-04 13:42:15,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036519808] [2020-09-04 13:42:15,499 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:15,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164821434] [2020-09-04 13:42:15,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:15,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-04 13:42:15,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759920645] [2020-09-04 13:42:15,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:15,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:15,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:15,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:15,501 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 5 states. [2020-09-04 13:42:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:15,526 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2020-09-04 13:42:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:42:15,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-09-04 13:42:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:15,528 INFO L225 Difference]: With dead ends: 82 [2020-09-04 13:42:15,528 INFO L226 Difference]: Without dead ends: 54 [2020-09-04 13:42:15,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-04 13:42:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-04 13:42:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-04 13:42:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-09-04 13:42:15,536 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 78 [2020-09-04 13:42:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:15,536 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-09-04 13:42:15,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-09-04 13:42:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 13:42:15,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:15,537 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:15,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:15,752 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:15,752 INFO L82 PathProgramCache]: Analyzing trace with hash -40278520, now seen corresponding path program 5 times [2020-09-04 13:42:15,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:15,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554036553] [2020-09-04 13:42:15,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:15,768 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:15,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706630901] [2020-09-04 13:42:15,769 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:15,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:42:15,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:42:15,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:42:15,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-09-04 13:42:15,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554036553] [2020-09-04 13:42:15,838 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:15,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706630901] [2020-09-04 13:42:15,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:15,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-04 13:42:15,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179359619] [2020-09-04 13:42:15,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:15,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:15,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:15,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:15,842 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-09-04 13:42:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:15,865 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-09-04 13:42:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:42:15,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-09-04 13:42:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:15,866 INFO L225 Difference]: With dead ends: 88 [2020-09-04 13:42:15,866 INFO L226 Difference]: Without dead ends: 57 [2020-09-04 13:42:15,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:15,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-04 13:42:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-04 13:42:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-04 13:42:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-09-04 13:42:15,873 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 87 [2020-09-04 13:42:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:15,874 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-09-04 13:42:15,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-09-04 13:42:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-04 13:42:15,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:15,875 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:16,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-09-04 13:42:16,091 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:16,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:16,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1679580114, now seen corresponding path program 6 times [2020-09-04 13:42:16,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:16,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181053946] [2020-09-04 13:42:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:16,109 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:16,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531365810] [2020-09-04 13:42:16,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:16,404 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-09-04 13:42:16,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:42:16,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:42:16,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-04 13:42:16,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181053946] [2020-09-04 13:42:16,441 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:16,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531365810] [2020-09-04 13:42:16,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:16,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-04 13:42:16,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741212918] [2020-09-04 13:42:16,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:16,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:16,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:16,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:16,443 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2020-09-04 13:42:16,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:16,463 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-09-04 13:42:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:42:16,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-09-04 13:42:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:16,465 INFO L225 Difference]: With dead ends: 86 [2020-09-04 13:42:16,465 INFO L226 Difference]: Without dead ends: 60 [2020-09-04 13:42:16,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-04 13:42:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-09-04 13:42:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 13:42:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-04 13:42:16,472 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 96 [2020-09-04 13:42:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:16,473 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-04 13:42:16,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-04 13:42:16,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-04 13:42:16,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:16,474 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:16,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:16,676 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:16,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2078244212, now seen corresponding path program 7 times [2020-09-04 13:42:16,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:16,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144664893] [2020-09-04 13:42:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:16,693 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:16,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475715631] [2020-09-04 13:42:16,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:16,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-04 13:42:16,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 180 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-04 13:42:16,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144664893] [2020-09-04 13:42:16,827 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:16,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475715631] [2020-09-04 13:42:16,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:16,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-04 13:42:16,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956478471] [2020-09-04 13:42:16,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:42:16,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:16,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:42:16,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:42:16,835 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-09-04 13:42:16,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:16,858 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-09-04 13:42:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:16,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-09-04 13:42:16,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:16,860 INFO L225 Difference]: With dead ends: 87 [2020-09-04 13:42:16,860 INFO L226 Difference]: Without dead ends: 61 [2020-09-04 13:42:16,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:42:16,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-04 13:42:16,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-04 13:42:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-04 13:42:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-09-04 13:42:16,867 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 98 [2020-09-04 13:42:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:16,867 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-09-04 13:42:16,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:42:16,868 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-09-04 13:42:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-04 13:42:16,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:16,869 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:17,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-09-04 13:42:17,083 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:17,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:17,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1352614250, now seen corresponding path program 8 times [2020-09-04 13:42:17,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:17,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150825077] [2020-09-04 13:42:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:17,097 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:17,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539176455] [2020-09-04 13:42:17,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:17,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:42:17,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-09-04 13:42:17,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:17,678 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:17,739 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:17,739 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:17,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-09-04 13:42:18,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:18 BoogieIcfgContainer [2020-09-04 13:42:18,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:18,026 INFO L168 Benchmark]: Toolchain (without parser) took 9976.01 ms. Allocated memory was 137.4 MB in the beginning and 286.8 MB in the end (delta: 149.4 MB). Free memory was 99.9 MB in the beginning and 158.6 MB in the end (delta: -58.6 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:18,027 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-04 13:42:18,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.32 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 179.7 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:18,028 INFO L168 Benchmark]: Boogie Preprocessor took 54.48 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 177.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:18,029 INFO L168 Benchmark]: RCFGBuilder took 494.33 ms. Allocated memory is still 200.8 MB. Free memory was 177.1 MB in the beginning and 159.4 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:18,029 INFO L168 Benchmark]: TraceAbstraction took 8993.84 ms. Allocated memory was 200.8 MB in the beginning and 286.8 MB in the end (delta: 86.0 MB). Free memory was 158.7 MB in the beginning and 158.6 MB in the end (delta: 119.9 kB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:18,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 427.32 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 179.7 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.48 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 177.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.33 ms. Allocated memory is still 200.8 MB. Free memory was 177.1 MB in the beginning and 159.4 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8993.84 ms. Allocated memory was 200.8 MB in the beginning and 286.8 MB in the end (delta: 86.0 MB). Free memory was 158.7 MB in the beginning and 158.6 MB in the end (delta: 119.9 kB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; VAL [x={2:0}] [L32] CALL init_nondet(x) VAL [x={2:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=1, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=2, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=3, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=4, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=5, x={2:0}, x={2:0}] [L6] COND FALSE !(i < 5) VAL [i=5, x={2:0}, x={2:0}] [L32] RET init_nondet(x) VAL [x={2:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={2:0}] [L38] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-5, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=-5, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-5, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-2, cnt=2, i=5, ret=-5, x={2:0}, x={2:0}] [L38] RET, EXPR rangesum(x) VAL [rangesum(x)=-2, x={2:0}] [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp VAL [ret=-2, temp=2147483647, x={2:0}] [L41] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-5, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=-5, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-5, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-2, cnt=2, i=5, ret=-5, x={2:0}, x={2:0}] [L41] RET, EXPR rangesum(x) VAL [rangesum(x)=-2, ret=-2, temp=2147483647, x={2:0}] [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=-2, ret2=-2, temp=-2147483648, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=1, ret=-2, ret2=-2, temp=-2147483648, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=2, ret=-2, ret2=-2, temp=-2147483648, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=3, ret=-2, ret2=-2, temp=-2147483648, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=4, ret=-2, ret2=-2, temp=-2147483648, x={2:0}] [L43] COND FALSE !(i<5 -1) VAL [i=4, ret=-2, ret2=-2, temp=-2147483648, x={2:0}] [L46] x[5 -1] = temp VAL [i=4, ret=-2, ret2=-2, temp=-2147483648, x={2:0}] [L47] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-3, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=-3, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-3, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-2147483651, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=-2147483651, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-2147483651, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-1073741825, cnt=2, i=5, ret=-2147483651, x={2:0}, x={2:0}] [L47] RET, EXPR rangesum(x) VAL [i=4, rangesum(x)=-1073741825, ret=-2, ret2=-2, temp=-2147483648, x={2:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=4, ret=-2, ret2=-2, ret5=-1073741825, temp=-2147483648, x={2:0}] [L50] __VERIFIER_error() VAL [i=4, ret=-2, ret2=-2, ret5=-1073741825, temp=-2147483648, x={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 16, TraceHistogramMax: 15, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 532 SDtfs, 111 SDslu, 933 SDs, 0 SdLazy, 303 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1039 GetRequests, 974 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 16 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1423 NumberOfCodeBlocks, 1252 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1122 ConstructedInterpolants, 0 QuantifiedInterpolants, 89157 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2541 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 2223/2300 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...