/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:33:08,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:33:08,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:33:08,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:33:08,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:33:08,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:33:08,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:33:08,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:33:08,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:33:08,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:33:08,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:33:08,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:33:08,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:33:08,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:33:08,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:33:08,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:33:08,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:33:08,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:33:08,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:33:08,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:33:08,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:33:08,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:33:08,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:33:08,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:33:08,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 16:33:08,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:33:08,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:33:08,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:33:08,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:33:08,444 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:33:08,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:33:08,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:33:08,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:33:08,446 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:33:08,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:33:08,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:33:08,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:33:08,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:33:08,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:33:08,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:33:08,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:33:08,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:33:08,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:33:08,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:33:08,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:33:08,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:33:08,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:33:08,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:33:08,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:33:08,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:33:08,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:33:08,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:33:08,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:33:08,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:33:08,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:33:08,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:33:08,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:33:08,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:33:08,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:33:08,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:33:08,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:33:08,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:33:08,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:33:08,746 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:33:08,747 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-21 16:33:08,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7efe5f16b/d3d6a0885a3a485e9d7e1a0069da3683/FLAG88b24d6ad [2020-08-21 16:33:09,262 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:33:09,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-21 16:33:09,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7efe5f16b/d3d6a0885a3a485e9d7e1a0069da3683/FLAG88b24d6ad [2020-08-21 16:33:09,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7efe5f16b/d3d6a0885a3a485e9d7e1a0069da3683 [2020-08-21 16:33:09,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:33:09,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:33:09,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:33:09,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:33:09,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:33:09,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:09,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afef70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09, skipping insertion in model container [2020-08-21 16:33:09,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:09,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:33:09,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:33:09,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:33:09,867 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:33:09,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:33:09,902 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:33:09,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09 WrapperNode [2020-08-21 16:33:09,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:33:09,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:33:09,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:33:09,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:33:09,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:09,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:10,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:10,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:10,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:10,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:10,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (1/1) ... [2020-08-21 16:33:10,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:33:10,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:33:10,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:33:10,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:33:10,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:33:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:33:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:33:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-21 16:33:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:33:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:33:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:33:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 16:33:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:33:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:33:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:33:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:33:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:33:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:33:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:33:10,310 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:33:10,310 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 16:33:10,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:33:10 BoogieIcfgContainer [2020-08-21 16:33:10,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:33:10,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:33:10,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:33:10,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:33:10,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:33:09" (1/3) ... [2020-08-21 16:33:10,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dd8595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:33:10, skipping insertion in model container [2020-08-21 16:33:10,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:33:09" (2/3) ... [2020-08-21 16:33:10,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dd8595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:33:10, skipping insertion in model container [2020-08-21 16:33:10,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:33:10" (3/3) ... [2020-08-21 16:33:10,327 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-08-21 16:33:10,341 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:33:10,350 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:33:10,367 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:33:10,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:33:10,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:33:10,397 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:33:10,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:33:10,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:33:10,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:33:10,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:33:10,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:33:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-21 16:33:10,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 16:33:10,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:10,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:10,437 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-08-21 16:33:10,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:10,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868306269] [2020-08-21 16:33:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:10,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:10,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 16:33:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:10,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868306269] [2020-08-21 16:33:10,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:33:10,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:33:10,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846156331] [2020-08-21 16:33:10,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:33:10,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:10,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:33:10,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:33:10,712 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-21 16:33:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:10,799 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-08-21 16:33:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:33:10,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-21 16:33:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:10,813 INFO L225 Difference]: With dead ends: 35 [2020-08-21 16:33:10,813 INFO L226 Difference]: Without dead ends: 17 [2020-08-21 16:33:10,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:33:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-21 16:33:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-08-21 16:33:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-21 16:33:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-21 16:33:10,854 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-08-21 16:33:10,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:10,854 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-21 16:33:10,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:33:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-21 16:33:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 16:33:10,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:10,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:10,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:33:10,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-08-21 16:33:10,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:10,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128473778] [2020-08-21 16:33:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:33:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:11,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128473778] [2020-08-21 16:33:11,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:33:11,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:33:11,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227192970] [2020-08-21 16:33:11,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:33:11,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:11,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:33:11,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:33:11,045 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-08-21 16:33:11,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:11,141 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-08-21 16:33:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:33:11,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 16:33:11,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:11,143 INFO L225 Difference]: With dead ends: 27 [2020-08-21 16:33:11,143 INFO L226 Difference]: Without dead ends: 19 [2020-08-21 16:33:11,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:33:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-21 16:33:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-21 16:33:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 16:33:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-21 16:33:11,155 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-08-21 16:33:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:11,155 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-21 16:33:11,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:33:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-21 16:33:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 16:33:11,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:11,157 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:11,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:33:11,158 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:11,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:11,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-08-21 16:33:11,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:11,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113175358] [2020-08-21 16:33:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:33:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:11,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113175358] [2020-08-21 16:33:11,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:11,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 16:33:11,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135093020] [2020-08-21 16:33:11,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:33:11,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:11,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:33:11,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:33:11,286 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-08-21 16:33:11,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:11,369 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-08-21 16:33:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:33:11,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 16:33:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:11,371 INFO L225 Difference]: With dead ends: 29 [2020-08-21 16:33:11,371 INFO L226 Difference]: Without dead ends: 21 [2020-08-21 16:33:11,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:33:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-21 16:33:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-21 16:33:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-21 16:33:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-21 16:33:11,379 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-08-21 16:33:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:11,379 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-21 16:33:11,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:33:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-21 16:33:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 16:33:11,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:11,381 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:11,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:33:11,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2020-08-21 16:33:11,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:11,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210988181] [2020-08-21 16:33:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:33:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:11,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210988181] [2020-08-21 16:33:11,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:11,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 16:33:11,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578036631] [2020-08-21 16:33:11,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:33:11,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:11,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:33:11,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:33:11,531 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-08-21 16:33:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:11,648 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-08-21 16:33:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:33:11,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-08-21 16:33:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:11,650 INFO L225 Difference]: With dead ends: 31 [2020-08-21 16:33:11,650 INFO L226 Difference]: Without dead ends: 23 [2020-08-21 16:33:11,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:33:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-21 16:33:11,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-21 16:33:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-21 16:33:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-08-21 16:33:11,657 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-08-21 16:33:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:11,657 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-08-21 16:33:11,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:33:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-08-21 16:33:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 16:33:11,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:11,658 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:11,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:33:11,659 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1647043486, now seen corresponding path program 3 times [2020-08-21 16:33:11,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:11,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477347952] [2020-08-21 16:33:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:33:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:11,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477347952] [2020-08-21 16:33:11,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:11,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 16:33:11,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963398008] [2020-08-21 16:33:11,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:33:11,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:33:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:33:11,790 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-08-21 16:33:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:11,917 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-08-21 16:33:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 16:33:11,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-21 16:33:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:11,919 INFO L225 Difference]: With dead ends: 33 [2020-08-21 16:33:11,919 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 16:33:11,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:33:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 16:33:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 16:33:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 16:33:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-08-21 16:33:11,925 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-08-21 16:33:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:11,926 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-08-21 16:33:11,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:33:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-08-21 16:33:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 16:33:11,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:11,927 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:11,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:33:11,928 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:11,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:11,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1976792733, now seen corresponding path program 4 times [2020-08-21 16:33:11,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:11,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543517934] [2020-08-21 16:33:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 16:33:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:12,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543517934] [2020-08-21 16:33:12,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:12,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 16:33:12,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434736118] [2020-08-21 16:33:12,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:33:12,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:12,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:33:12,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:33:12,044 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2020-08-21 16:33:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:12,166 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-08-21 16:33:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:33:12,167 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-08-21 16:33:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:12,168 INFO L225 Difference]: With dead ends: 35 [2020-08-21 16:33:12,168 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 16:33:12,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:33:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 16:33:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-21 16:33:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-21 16:33:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-21 16:33:12,174 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-08-21 16:33:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:12,174 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-21 16:33:12,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:33:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-21 16:33:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 16:33:12,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:12,176 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:12,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:33:12,176 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:12,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1264922136, now seen corresponding path program 5 times [2020-08-21 16:33:12,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:12,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918343553] [2020-08-21 16:33:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 16:33:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:12,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918343553] [2020-08-21 16:33:12,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:12,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:33:12,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921307733] [2020-08-21 16:33:12,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:33:12,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:12,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:33:12,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:33:12,308 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-08-21 16:33:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:12,460 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-08-21 16:33:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:33:12,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-08-21 16:33:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:12,462 INFO L225 Difference]: With dead ends: 37 [2020-08-21 16:33:12,462 INFO L226 Difference]: Without dead ends: 29 [2020-08-21 16:33:12,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:33:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-21 16:33:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-21 16:33:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-21 16:33:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-08-21 16:33:12,469 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-08-21 16:33:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:12,470 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-08-21 16:33:12,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:33:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-08-21 16:33:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 16:33:12,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:12,471 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:12,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:33:12,472 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash 57078483, now seen corresponding path program 6 times [2020-08-21 16:33:12,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:12,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126341580] [2020-08-21 16:33:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:33:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:12,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126341580] [2020-08-21 16:33:12,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:12,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 16:33:12,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825193317] [2020-08-21 16:33:12,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:33:12,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:12,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:33:12,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:33:12,660 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2020-08-21 16:33:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:12,824 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-21 16:33:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 16:33:12,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-08-21 16:33:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:12,825 INFO L225 Difference]: With dead ends: 39 [2020-08-21 16:33:12,826 INFO L226 Difference]: Without dead ends: 31 [2020-08-21 16:33:12,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:33:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-21 16:33:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-21 16:33:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 16:33:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-08-21 16:33:12,836 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-08-21 16:33:12,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:12,836 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-08-21 16:33:12,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:33:12,837 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-08-21 16:33:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 16:33:12,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:12,840 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:12,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:33:12,841 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:12,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:12,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1039502130, now seen corresponding path program 7 times [2020-08-21 16:33:12,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:12,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403049403] [2020-08-21 16:33:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:33:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:13,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403049403] [2020-08-21 16:33:13,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:13,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:33:13,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104189920] [2020-08-21 16:33:13,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:33:13,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:13,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:33:13,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:33:13,045 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 12 states. [2020-08-21 16:33:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:13,223 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-08-21 16:33:13,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 16:33:13,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-08-21 16:33:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:13,224 INFO L225 Difference]: With dead ends: 41 [2020-08-21 16:33:13,225 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 16:33:13,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-21 16:33:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 16:33:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-21 16:33:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 16:33:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-08-21 16:33:13,230 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-08-21 16:33:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:13,231 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-08-21 16:33:13,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:33:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-08-21 16:33:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-21 16:33:13,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:13,232 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:13,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:33:13,233 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:13,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:13,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1708483593, now seen corresponding path program 8 times [2020-08-21 16:33:13,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:13,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513863598] [2020-08-21 16:33:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 16:33:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:13,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513863598] [2020-08-21 16:33:13,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:13,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:33:13,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353266106] [2020-08-21 16:33:13,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:33:13,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:13,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:33:13,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:33:13,388 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 13 states. [2020-08-21 16:33:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:13,608 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-08-21 16:33:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 16:33:13,608 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-08-21 16:33:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:13,609 INFO L225 Difference]: With dead ends: 43 [2020-08-21 16:33:13,609 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 16:33:13,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:33:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 16:33:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-21 16:33:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 16:33:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-08-21 16:33:13,615 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2020-08-21 16:33:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:13,615 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-08-21 16:33:13,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:33:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-08-21 16:33:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 16:33:13,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:13,616 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:13,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:33:13,617 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1117876356, now seen corresponding path program 9 times [2020-08-21 16:33:13,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:13,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14363626] [2020-08-21 16:33:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 16:33:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:13,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14363626] [2020-08-21 16:33:13,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:13,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 16:33:13,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126348303] [2020-08-21 16:33:13,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 16:33:13,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:13,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 16:33:13,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:33:13,790 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 15 states. [2020-08-21 16:33:14,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:14,040 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-08-21 16:33:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 16:33:14,041 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-08-21 16:33:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:14,042 INFO L225 Difference]: With dead ends: 45 [2020-08-21 16:33:14,042 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 16:33:14,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-08-21 16:33:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 16:33:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-21 16:33:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 16:33:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-21 16:33:14,056 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2020-08-21 16:33:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:14,058 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-21 16:33:14,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 16:33:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-21 16:33:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-21 16:33:14,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:14,060 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:14,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:33:14,060 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:14,063 INFO L82 PathProgramCache]: Analyzing trace with hash 480004671, now seen corresponding path program 10 times [2020-08-21 16:33:14,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:14,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16300252] [2020-08-21 16:33:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 16:33:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:14,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16300252] [2020-08-21 16:33:14,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:14,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-21 16:33:14,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507479629] [2020-08-21 16:33:14,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-21 16:33:14,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:14,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-21 16:33:14,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-08-21 16:33:14,744 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 21 states. [2020-08-21 16:33:15,078 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-08-21 16:33:15,408 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-08-21 16:33:15,689 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-08-21 16:33:16,001 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2020-08-21 16:33:16,254 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-08-21 16:33:16,545 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2020-08-21 16:33:16,749 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-08-21 16:33:17,052 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-08-21 16:33:17,256 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-08-21 16:33:17,495 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-08-21 16:33:17,654 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-08-21 16:33:17,885 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-08-21 16:33:18,028 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-08-21 16:33:18,221 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-08-21 16:33:18,553 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-08-21 16:33:18,802 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-08-21 16:33:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:19,274 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-08-21 16:33:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 16:33:19,274 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-08-21 16:33:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:19,277 INFO L225 Difference]: With dead ends: 44 [2020-08-21 16:33:19,277 INFO L226 Difference]: Without dead ends: 39 [2020-08-21 16:33:19,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=457, Invalid=1523, Unknown=0, NotChecked=0, Total=1980 [2020-08-21 16:33:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-21 16:33:19,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-21 16:33:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 16:33:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-08-21 16:33:19,289 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2020-08-21 16:33:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:19,289 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-08-21 16:33:19,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-21 16:33:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-08-21 16:33:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 16:33:19,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:33:19,290 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:33:19,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:33:19,291 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:33:19,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:33:19,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1665638714, now seen corresponding path program 11 times [2020-08-21 16:33:19,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:33:19,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805579402] [2020-08-21 16:33:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:33:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:19,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:33:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 16:33:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:33:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 112 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:33:19,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805579402] [2020-08-21 16:33:19,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:33:19,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:33:19,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120969403] [2020-08-21 16:33:19,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:33:19,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:33:19,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:33:19,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:33:19,469 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 16 states. [2020-08-21 16:33:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:33:19,569 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-21 16:33:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:33:19,570 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-08-21 16:33:19,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:33:19,570 INFO L225 Difference]: With dead ends: 39 [2020-08-21 16:33:19,570 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 16:33:19,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-08-21 16:33:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 16:33:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 16:33:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 16:33:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 16:33:19,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-08-21 16:33:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:33:19,573 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 16:33:19,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 16:33:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 16:33:19,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 16:33:19,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 16:33:19,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 16:33:20,329 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2020-08-21 16:33:20,349 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 16:33:20,350 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-21 16:33:20,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 16:33:20,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 16:33:20,350 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 16:33:20,350 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 16:33:20,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 16:33:20,350 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-08-21 16:33:20,351 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-08-21 16:33:20,351 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-08-21 16:33:20,351 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-08-21 16:33:20,351 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-08-21 16:33:20,351 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-08-21 16:33:20,351 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-08-21 16:33:20,351 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-08-21 16:33:20,351 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-21 16:33:20,352 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-08-21 16:33:20,352 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (let ((.cse0 (= |main_~#ad1~0.offset| 0)) (.cse3 (select |#memory_int| |main_~#ad1~0.base|)) (.cse4 (* main_~i~0 8)) (.cse2 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (or (let ((.cse1 (+ main_~i~0 7))) (and .cse0 (<= .cse1 .cse2) (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 56)) .cse1) (<= .cse2 .cse1))) (let ((.cse5 (+ main_~i~0 4))) (and .cse0 (= .cse5 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 32))) (<= .cse5 .cse2) (<= .cse2 .cse5))) (and .cse0 (<= .cse2 main_~i~0) (= main_~i~0 (select .cse3 (+ .cse4 |main_~#ad1~0.offset|)))) (let ((.cse6 (+ main_~i~0 10))) (and (= .cse6 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 80)) .cse6))) (let ((.cse7 (+ main_~i~0 3))) (and (= .cse7 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 24))) .cse0 (<= .cse2 .cse7) (<= .cse7 .cse2))) (let ((.cse8 (+ main_~i~0 8))) (and .cse0 (<= .cse8 .cse2) (= .cse8 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 64))) (<= .cse2 .cse8))) (let ((.cse9 (+ main_~i~0 1))) (and (<= .cse9 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 8)) .cse9) (<= .cse2 .cse9))) (let ((.cse10 (+ main_~i~0 5))) (and (<= .cse2 .cse10) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 40)) .cse10) (<= .cse10 .cse2))) (let ((.cse11 (+ main_~i~0 9))) (and (<= .cse11 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 72)) .cse11) (<= .cse2 .cse11))) (let ((.cse12 (+ main_~i~0 2))) (and .cse0 (<= .cse12 .cse2) (= .cse12 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 16))) (<= .cse2 .cse12))) (let ((.cse13 (+ main_~i~0 6))) (and .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 48)) .cse13) (<= .cse13 .cse2) (<= .cse2 .cse13))))) [2020-08-21 16:33:20,353 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|)))) [2020-08-21 16:33:20,353 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-08-21 16:33:20,353 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-08-21 16:33:20,353 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-08-21 16:33:20,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,370 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,370 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,370 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,371 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,371 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,371 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,371 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,372 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,372 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,372 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,372 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,373 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,373 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,373 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,385 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,385 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,386 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,386 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,386 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,386 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,387 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,387 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,387 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,387 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,388 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,388 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,388 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,388 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,389 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,389 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,389 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,389 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,390 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,390 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,390 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,390 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,390 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,391 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,391 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,391 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,391 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,391 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,392 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,392 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,392 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:33:20 BoogieIcfgContainer [2020-08-21 16:33:20,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:33:20,397 INFO L168 Benchmark]: Toolchain (without parser) took 10758.49 ms. Allocated memory was 140.0 MB in the beginning and 313.0 MB in the end (delta: 173.0 MB). Free memory was 103.1 MB in the beginning and 188.9 MB in the end (delta: -85.8 MB). Peak memory consumption was 162.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:20,398 INFO L168 Benchmark]: CDTParser took 0.25 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. [2020-08-21 16:33:20,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.29 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:20,399 INFO L168 Benchmark]: Boogie Preprocessor took 113.11 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 180.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:20,400 INFO L168 Benchmark]: RCFGBuilder took 300.05 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 166.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:20,401 INFO L168 Benchmark]: TraceAbstraction took 10077.36 ms. Allocated memory was 203.4 MB in the beginning and 313.0 MB in the end (delta: 109.6 MB). Free memory was 165.7 MB in the beginning and 188.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 161.4 MB. Max. memory is 7.1 GB. [2020-08-21 16:33:20,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 263.29 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.11 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 180.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 300.05 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 166.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10077.36 ms. Allocated memory was 203.4 MB in the beginning and 313.0 MB in the end (delta: 109.6 MB). Free memory was 165.7 MB in the beginning and 188.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 161.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant [2020-08-21 16:33:20,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,416 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,416 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,416 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,416 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,416 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,417 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,417 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,417 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,417 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,421 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,421 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,421 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,421 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 16:33:20,430 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((((((((ad1 == 0 && i + 7 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 56] == i + 7) && unknown-#memory_int-unknown[pa][pa] <= i + 7) || (((ad1 == 0 && i + 4 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 32]) && i + 4 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 4)) || ((ad1 == 0 && unknown-#memory_int-unknown[pa][pa] <= i) && i == unknown-#memory_int-unknown[ad1][i * 8 + ad1])) || ((i + 10 == unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 80] == i + 10)) || (((i + 3 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 24] && ad1 == 0) && unknown-#memory_int-unknown[pa][pa] <= i + 3) && i + 3 <= unknown-#memory_int-unknown[pa][pa])) || (((ad1 == 0 && i + 8 <= unknown-#memory_int-unknown[pa][pa]) && i + 8 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 64]) && unknown-#memory_int-unknown[pa][pa] <= i + 8)) || (((i + 1 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 8] == i + 1) && unknown-#memory_int-unknown[pa][pa] <= i + 1)) || (((unknown-#memory_int-unknown[pa][pa] <= i + 5 && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 40] == i + 5) && i + 5 <= unknown-#memory_int-unknown[pa][pa])) || (((i + 9 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 72] == i + 9) && unknown-#memory_int-unknown[pa][pa] <= i + 9)) || (((ad1 == 0 && i + 2 <= unknown-#memory_int-unknown[pa][pa]) && i + 2 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 16]) && unknown-#memory_int-unknown[pa][pa] <= i + 2)) || (((ad1 == 0 && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 48] == i + 6) && i + 6 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 6) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.1s, OverallIterations: 13, TraceHistogramMax: 12, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 122 SDslu, 661 SDs, 0 SdLazy, 896 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=12, 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, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 20 PreInvPairs, 32 NumberOfFragments, 406 HoareAnnotationTreeSize, 20 FomulaSimplifications, 343 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1565 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 326 ConstructedInterpolants, 0 QuantifiedInterpolants, 68375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 112/572 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 correct! Received shutdown request...