/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 0.1.25-72570d3 [2020-08-22 16:56:11,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:11,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:11,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:11,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:11,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:11,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:11,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:11,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:11,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:11,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:11,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:11,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:11,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:11,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:11,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:11,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:11,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:11,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:11,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:11,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:11,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:11,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:11,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:11,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:11,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:11,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:11,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:11,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:56:11,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:11,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:11,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:11,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:11,204 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:11,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:11,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:11,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:11,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:11,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:11,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:11,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:11,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:11,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:11,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:11,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:11,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:11,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:11,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:11,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:11,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:11,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:11,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:11,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:11,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:11,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:11,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:11,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:11,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:11,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:11,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:11,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:11,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:11,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:11,527 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:11,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-08-22 16:56:11,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e815140/4f0e1eb7fc2e4263a21f29fe2341386e/FLAG69c214ef0 [2020-08-22 16:56:12,081 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:12,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-08-22 16:56:12,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e815140/4f0e1eb7fc2e4263a21f29fe2341386e/FLAG69c214ef0 [2020-08-22 16:56:12,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e815140/4f0e1eb7fc2e4263a21f29fe2341386e [2020-08-22 16:56:12,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:12,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:12,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:12,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:12,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:12,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65de80d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12, skipping insertion in model container [2020-08-22 16:56:12,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:12,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:12,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:12,660 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:12,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:12,706 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:12,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12 WrapperNode [2020-08-22 16:56:12,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:12,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:12,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:12,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:12,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (1/1) ... [2020-08-22 16:56:12,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:12,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:12,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:12,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:12,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-08-22 16:56:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-08-22 16:56:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-08-22 16:56:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-08-22 16:56:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:56:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:13,232 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:13,232 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 16:56:13,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:13 BoogieIcfgContainer [2020-08-22 16:56:13,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:13,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:13,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:13,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:13,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:12" (1/3) ... [2020-08-22 16:56:13,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa2fccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:13, skipping insertion in model container [2020-08-22 16:56:13,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:12" (2/3) ... [2020-08-22 16:56:13,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa2fccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:13, skipping insertion in model container [2020-08-22 16:56:13,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:13" (3/3) ... [2020-08-22 16:56:13,244 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2020-08-22 16:56:13,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:13,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:13,271 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:13,291 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:13,291 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:13,291 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:13,292 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:13,292 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:13,292 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:13,292 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:13,292 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 16:56:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 16:56:13,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:13,316 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] [2020-08-22 16:56:13,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:13,321 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2020-08-22 16:56:13,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:13,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367860657] [2020-08-22 16:56:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:13,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367860657] [2020-08-22 16:56:13,454 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-08-22 16:56:13,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486475541] [2020-08-22 16:56:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:13,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjunts are in the unsatisfiable core [2020-08-22 16:56:13,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 16:56:13,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:13,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 16:56:13,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979427839] [2020-08-22 16:56:13,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 16:56:13,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:13,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 16:56:13,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:56:13,609 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-08-22 16:56:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:13,636 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-08-22 16:56:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 16:56:13,638 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-08-22 16:56:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:13,648 INFO L225 Difference]: With dead ends: 64 [2020-08-22 16:56:13,648 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 16:56:13,652 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 [2020-08-22 16:56:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 16:56:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-22 16:56:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:56:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-08-22 16:56:13,698 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 37 [2020-08-22 16:56:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:13,698 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-08-22 16:56:13,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 16:56:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-08-22 16:56:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 16:56:13,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:13,702 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] [2020-08-22 16:56:13,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-08-22 16:56:13,913 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:13,915 INFO L82 PathProgramCache]: Analyzing trace with hash -991975144, now seen corresponding path program 1 times [2020-08-22 16:56:13,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:13,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723161074] [2020-08-22 16:56:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:13,940 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:13,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118360600] [2020-08-22 16:56:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:14,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-08-22 16:56:14,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 16:56:14,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723161074] [2020-08-22 16:56:14,057 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:14,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118360600] [2020-08-22 16:56:14,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:14,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:14,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553034805] [2020-08-22 16:56:14,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:14,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:14,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:14,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:14,060 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2020-08-22 16:56:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:14,087 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-08-22 16:56:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:14,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-08-22 16:56:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:14,089 INFO L225 Difference]: With dead ends: 56 [2020-08-22 16:56:14,089 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 16:56:14,090 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 [2020-08-22 16:56:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 16:56:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-08-22 16:56:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 16:56:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-08-22 16:56:14,098 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2020-08-22 16:56:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:14,099 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-08-22 16:56:14,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-08-22 16:56:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 16:56:14,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:14,101 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] [2020-08-22 16:56:14,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:14,315 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:14,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:14,316 INFO L82 PathProgramCache]: Analyzing trace with hash 479004822, now seen corresponding path program 1 times [2020-08-22 16:56:14,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:14,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75832801] [2020-08-22 16:56:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:14,336 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:14,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192475631] [2020-08-22 16:56:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:14,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2020-08-22 16:56:14,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:56:14,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75832801] [2020-08-22 16:56:14,435 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:14,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192475631] [2020-08-22 16:56:14,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:14,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:14,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926618725] [2020-08-22 16:56:14,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:14,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:14,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:14,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:14,438 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 3 states. [2020-08-22 16:56:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:14,473 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-08-22 16:56:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:14,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-08-22 16:56:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:14,475 INFO L225 Difference]: With dead ends: 54 [2020-08-22 16:56:14,476 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 16:56:14,476 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 [2020-08-22 16:56:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 16:56:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-08-22 16:56:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 16:56:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-08-22 16:56:14,491 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 39 [2020-08-22 16:56:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:14,492 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-08-22 16:56:14,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-08-22 16:56:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 16:56:14,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:14,498 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] [2020-08-22 16:56:14,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:14,713 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:14,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1719401286, now seen corresponding path program 1 times [2020-08-22 16:56:14,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:14,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942630072] [2020-08-22 16:56:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:14,738 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:14,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746830432] [2020-08-22 16:56:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:14,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2020-08-22 16:56:14,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 16:56:14,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942630072] [2020-08-22 16:56:14,849 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:14,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746830432] [2020-08-22 16:56:14,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:14,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:14,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811234401] [2020-08-22 16:56:14,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:14,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:14,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:14,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:14,852 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2020-08-22 16:56:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:14,877 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2020-08-22 16:56:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:14,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-08-22 16:56:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:14,880 INFO L225 Difference]: With dead ends: 52 [2020-08-22 16:56:14,880 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 16:56:14,881 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 [2020-08-22 16:56:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 16:56:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-08-22 16:56:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 16:56:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-08-22 16:56:14,894 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 48 [2020-08-22 16:56:14,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:14,896 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-08-22 16:56:14,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-08-22 16:56:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 16:56:14,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:14,898 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] [2020-08-22 16:56:15,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:15,107 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:15,108 INFO L82 PathProgramCache]: Analyzing trace with hash 494084840, now seen corresponding path program 1 times [2020-08-22 16:56:15,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:15,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906161025] [2020-08-22 16:56:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:15,124 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:15,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682662612] [2020-08-22 16:56:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:15,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2020-08-22 16:56:15,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-22 16:56:15,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906161025] [2020-08-22 16:56:15,217 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:15,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682662612] [2020-08-22 16:56:15,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:15,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:15,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445597145] [2020-08-22 16:56:15,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:15,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:15,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:15,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:15,220 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2020-08-22 16:56:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:15,253 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2020-08-22 16:56:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:15,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-08-22 16:56:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:15,256 INFO L225 Difference]: With dead ends: 63 [2020-08-22 16:56:15,256 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 16:56:15,257 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 [2020-08-22 16:56:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 16:56:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-08-22 16:56:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 16:56:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-22 16:56:15,265 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 50 [2020-08-22 16:56:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:15,265 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-22 16:56:15,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-22 16:56:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 16:56:15,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:15,267 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] [2020-08-22 16:56:15,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:15,483 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:15,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:15,484 INFO L82 PathProgramCache]: Analyzing trace with hash 125205893, now seen corresponding path program 1 times [2020-08-22 16:56:15,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:15,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462055609] [2020-08-22 16:56:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:15,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:56:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 16:56:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:15,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 16:56:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:15,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 16:56:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 16:56:15,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462055609] [2020-08-22 16:56:15,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892626455] [2020-08-22 16:56:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:15,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2020-08-22 16:56:15,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-08-22 16:56:15,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:56:15,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 8 [2020-08-22 16:56:15,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402495969] [2020-08-22 16:56:15,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:56:15,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:15,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:56:15,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:56:15,778 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 8 states. [2020-08-22 16:56:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:16,046 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2020-08-22 16:56:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 16:56:16,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-08-22 16:56:16,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:16,048 INFO L225 Difference]: With dead ends: 76 [2020-08-22 16:56:16,049 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 16:56:16,052 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 [2020-08-22 16:56:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 16:56:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-08-22 16:56:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 16:56:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-08-22 16:56:16,076 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 50 [2020-08-22 16:56:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:16,076 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-08-22 16:56:16,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:56:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-08-22 16:56:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 16:56:16,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:16,078 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] [2020-08-22 16:56:16,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:16,296 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:16,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1369912335, now seen corresponding path program 2 times [2020-08-22 16:56:16,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:16,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546577711] [2020-08-22 16:56:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:16,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:56:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:56:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:56:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 16:56:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-22 16:56:16,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546577711] [2020-08-22 16:56:16,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396650757] [2020-08-22 16:56:16,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:16,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:56:16,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:56:16,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2020-08-22 16:56:16,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-22 16:56:16,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:56:16,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-08-22 16:56:16,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691449426] [2020-08-22 16:56:16,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:56:16,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:56:16,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:56:16,549 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 7 states. [2020-08-22 16:56:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:16,739 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2020-08-22 16:56:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:56:16,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-22 16:56:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:16,740 INFO L225 Difference]: With dead ends: 80 [2020-08-22 16:56:16,740 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 16:56:16,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:56:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 16:56:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-08-22 16:56:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 16:56:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-08-22 16:56:16,756 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 61 [2020-08-22 16:56:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:16,759 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-08-22 16:56:16,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:56:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-08-22 16:56:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 16:56:16,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:16,764 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] [2020-08-22 16:56:16,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:16,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:16,966 INFO L82 PathProgramCache]: Analyzing trace with hash 190779759, now seen corresponding path program 3 times [2020-08-22 16:56:16,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:16,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506440215] [2020-08-22 16:56:16,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:56:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 16:56:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 16:56:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 16:56:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-08-22 16:56:17,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506440215] [2020-08-22 16:56:17,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236355445] [2020-08-22 16:56:17,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:17,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-08-22 16:56:17,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:56:17,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2020-08-22 16:56:17,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-08-22 16:56:17,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:17,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2020-08-22 16:56:17,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983891986] [2020-08-22 16:56:17,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:56:17,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:17,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:56:17,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:56:17,152 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 4 states. [2020-08-22 16:56:17,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:17,178 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-08-22 16:56:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:56:17,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-08-22 16:56:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:17,180 INFO L225 Difference]: With dead ends: 78 [2020-08-22 16:56:17,180 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 16:56:17,181 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 [2020-08-22 16:56:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 16:56:17,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-08-22 16:56:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 16:56:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-08-22 16:56:17,187 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 63 [2020-08-22 16:56:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:17,188 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-08-22 16:56:17,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:56:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-08-22 16:56:17,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 16:56:17,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:17,190 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] [2020-08-22 16:56:17,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-08-22 16:56:17,403 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:17,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:17,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1896448358, now seen corresponding path program 1 times [2020-08-22 16:56:17,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:17,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543537769] [2020-08-22 16:56:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:56:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 16:56:17,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543537769] [2020-08-22 16:56:17,529 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-08-22 16:56:17,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669039642] [2020-08-22 16:56:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2020-08-22 16:56:17,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-08-22 16:56:17,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:17,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 16:56:17,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799242218] [2020-08-22 16:56:17,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:56:17,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:17,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:56:17,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:56:17,618 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-08-22 16:56:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:17,667 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-08-22 16:56:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:17,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-08-22 16:56:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:17,669 INFO L225 Difference]: With dead ends: 78 [2020-08-22 16:56:17,669 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 16:56:17,670 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 [2020-08-22 16:56:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 16:56:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-08-22 16:56:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 16:56:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-22 16:56:17,684 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 72 [2020-08-22 16:56:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:17,684 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-22 16:56:17,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:56:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-22 16:56:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 16:56:17,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:17,689 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] [2020-08-22 16:56:17,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:17,906 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:17,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:17,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2135261480, now seen corresponding path program 2 times [2020-08-22 16:56:17,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:17,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160073267] [2020-08-22 16:56:17,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:56:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 16:56:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:56:18,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160073267] [2020-08-22 16:56:18,028 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-08-22 16:56:18,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524091394] [2020-08-22 16:56:18,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:18,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:56:18,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:56:18,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:56:18,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-08-22 16:56:18,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:18,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 16:56:18,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860214510] [2020-08-22 16:56:18,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:56:18,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:18,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:56:18,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:56:18,120 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-08-22 16:56:18,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:18,144 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-08-22 16:56:18,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:56:18,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-22 16:56:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:18,145 INFO L225 Difference]: With dead ends: 79 [2020-08-22 16:56:18,145 INFO L226 Difference]: Without dead ends: 49 [2020-08-22 16:56:18,146 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 [2020-08-22 16:56:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-22 16:56:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-08-22 16:56:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-22 16:56:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-08-22 16:56:18,152 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 74 [2020-08-22 16:56:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:18,152 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-08-22 16:56:18,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:56:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-08-22 16:56:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-22 16:56:18,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:18,154 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] [2020-08-22 16:56:18,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:18,361 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:18,362 INFO L82 PathProgramCache]: Analyzing trace with hash -293562262, now seen corresponding path program 3 times [2020-08-22 16:56:18,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:18,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699007627] [2020-08-22 16:56:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:18,384 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:18,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519628099] [2020-08-22 16:56:18,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:18,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-08-22 16:56:18,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:56:18,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2020-08-22 16:56:18,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-08-22 16:56:19,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699007627] [2020-08-22 16:56:19,022 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:19,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519628099] [2020-08-22 16:56:19,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:19,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-08-22 16:56:19,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475184091] [2020-08-22 16:56:19,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:56:19,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:19,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:56:19,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:56:19,026 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 4 states. [2020-08-22 16:56:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:19,040 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-08-22 16:56:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:56:19,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-08-22 16:56:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:19,042 INFO L225 Difference]: With dead ends: 72 [2020-08-22 16:56:19,042 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 16:56:19,042 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 [2020-08-22 16:56:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 16:56:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-08-22 16:56:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-22 16:56:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-08-22 16:56:19,048 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 76 [2020-08-22 16:56:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:19,049 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-08-22 16:56:19,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:56:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-08-22 16:56:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 16:56:19,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:19,050 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] [2020-08-22 16:56:19,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-08-22 16:56:19,256 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:19,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:19,257 INFO L82 PathProgramCache]: Analyzing trace with hash 704023820, now seen corresponding path program 4 times [2020-08-22 16:56:19,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:19,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889327658] [2020-08-22 16:56:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:19,269 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:19,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290146736] [2020-08-22 16:56:19,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:19,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:56:19,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:56:19,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2020-08-22 16:56:19,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-08-22 16:56:19,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889327658] [2020-08-22 16:56:19,373 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:19,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290146736] [2020-08-22 16:56:19,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:19,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 16:56:19,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596487300] [2020-08-22 16:56:19,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:19,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:19,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:19,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:19,376 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 5 states. [2020-08-22 16:56:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:19,404 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2020-08-22 16:56:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:56:19,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-22 16:56:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:19,407 INFO L225 Difference]: With dead ends: 82 [2020-08-22 16:56:19,407 INFO L226 Difference]: Without dead ends: 54 [2020-08-22 16:56:19,407 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 [2020-08-22 16:56:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-22 16:56:19,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-22 16:56:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 16:56:19,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-08-22 16:56:19,422 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 78 [2020-08-22 16:56:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:19,422 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-08-22 16:56:19,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:19,423 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-08-22 16:56:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 16:56:19,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:19,424 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] [2020-08-22 16:56:19,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:19,628 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:19,628 INFO L82 PathProgramCache]: Analyzing trace with hash -40278520, now seen corresponding path program 5 times [2020-08-22 16:56:19,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:19,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445477531] [2020-08-22 16:56:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:19,647 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:19,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583390102] [2020-08-22 16:56:19,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:19,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:56:19,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:56:19,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-08-22 16:56:19,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-08-22 16:56:19,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445477531] [2020-08-22 16:56:19,734 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:19,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583390102] [2020-08-22 16:56:19,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:19,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 16:56:19,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693723444] [2020-08-22 16:56:19,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:19,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:19,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:19,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:19,736 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-08-22 16:56:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:19,761 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-08-22 16:56:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:56:19,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-08-22 16:56:19,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:19,764 INFO L225 Difference]: With dead ends: 88 [2020-08-22 16:56:19,764 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 16:56:19,764 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 [2020-08-22 16:56:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 16:56:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-22 16:56:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 16:56:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-08-22 16:56:19,771 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 87 [2020-08-22 16:56:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:19,771 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-08-22 16:56:19,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-08-22 16:56:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-22 16:56:19,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:19,772 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] [2020-08-22 16:56:19,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-08-22 16:56:19,981 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1679580114, now seen corresponding path program 6 times [2020-08-22 16:56:19,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:19,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397725619] [2020-08-22 16:56:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:19,998 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:19,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948210830] [2020-08-22 16:56:19,999 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:20,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-08-22 16:56:20,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:56:20,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2020-08-22 16:56:20,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 16:56:20,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397725619] [2020-08-22 16:56:20,281 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:20,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948210830] [2020-08-22 16:56:20,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:20,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 16:56:20,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156890785] [2020-08-22 16:56:20,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:20,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:20,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:20,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:20,283 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2020-08-22 16:56:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:20,300 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-08-22 16:56:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:56:20,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-08-22 16:56:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:20,301 INFO L225 Difference]: With dead ends: 86 [2020-08-22 16:56:20,301 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 16:56:20,302 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 [2020-08-22 16:56:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 16:56:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-08-22 16:56:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-08-22 16:56:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-08-22 16:56:20,313 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 96 [2020-08-22 16:56:20,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:20,313 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-08-22 16:56:20,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-08-22 16:56:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 16:56:20,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:20,315 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] [2020-08-22 16:56:20,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:20,526 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:20,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2078244212, now seen corresponding path program 7 times [2020-08-22 16:56:20,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:20,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737684264] [2020-08-22 16:56:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:20,538 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:20,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926043110] [2020-08-22 16:56:20,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:20,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjunts are in the unsatisfiable core [2020-08-22 16:56:20,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 180 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 16:56:20,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737684264] [2020-08-22 16:56:20,677 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:20,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926043110] [2020-08-22 16:56:20,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:56:20,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 16:56:20,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754538543] [2020-08-22 16:56:20,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:56:20,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:20,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:56:20,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:56:20,679 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-08-22 16:56:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:20,697 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-08-22 16:56:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:20,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-08-22 16:56:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:20,699 INFO L225 Difference]: With dead ends: 87 [2020-08-22 16:56:20,699 INFO L226 Difference]: Without dead ends: 61 [2020-08-22 16:56:20,700 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 [2020-08-22 16:56:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-22 16:56:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-08-22 16:56:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-08-22 16:56:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-08-22 16:56:20,705 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 98 [2020-08-22 16:56:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:20,705 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-08-22 16:56:20,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:56:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-08-22 16:56:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 16:56:20,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:20,707 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] [2020-08-22 16:56:20,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-08-22 16:56:20,920 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:20,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1352614250, now seen corresponding path program 8 times [2020-08-22 16:56:20,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:20,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861868766] [2020-08-22 16:56:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:20,936 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:20,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737008217] [2020-08-22 16:56:20,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:21,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:56:21,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-08-22 16:56:21,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:21,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:21,753 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:21,753 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:21,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-08-22 16:56:22,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:22 BoogieIcfgContainer [2020-08-22 16:56:22,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:22,044 INFO L168 Benchmark]: Toolchain (without parser) took 9604.88 ms. Allocated memory was 140.0 MB in the beginning and 273.7 MB in the end (delta: 133.7 MB). Free memory was 102.9 MB in the beginning and 114.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 122.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,045 INFO L168 Benchmark]: CDTParser took 1.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.07 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 92.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,046 INFO L168 Benchmark]: Boogie Preprocessor took 120.44 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 180.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,047 INFO L168 Benchmark]: RCFGBuilder took 408.61 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 162.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,047 INFO L168 Benchmark]: TraceAbstraction took 8804.50 ms. Allocated memory was 202.9 MB in the beginning and 273.7 MB in the end (delta: 70.8 MB). Free memory was 161.8 MB in the beginning and 114.4 MB in the end (delta: 47.3 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,050 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.07 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 92.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.44 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 180.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.61 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 162.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8804.50 ms. Allocated memory was 202.9 MB in the beginning and 273.7 MB in the end (delta: 70.8 MB). Free memory was 161.8 MB in the beginning and 114.4 MB in the end (delta: 47.3 MB). Peak memory consumption was 118.1 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: 8.6s, OverallIterations: 16, TraceHistogramMax: 15, AutomataDifference: 0.8s, 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, 0.3s 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: 0.1s 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...