/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:24:22,053 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-21 17:24:22,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:24:22,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:24:22,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:24:22,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:24:22,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:24:22,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:24:22,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:24:22,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:24:22,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:24:22,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:24:22,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:24:22,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:24:22,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:24:22,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:24:22,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:24:22,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:24:22,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:24:22,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:24:22,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:24:22,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:24:22,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 17:24:22,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:24:22,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:24:22,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:24:22,114 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 17:24:22,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:24:22,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:24:22,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:24:22,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:24:22,149 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:24:22,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:24:22,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:24:22,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:24:22,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:24:22,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:24:22,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:24:22,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:24:22,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:24:22,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:24:22,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:24:22,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:24:22,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:24:22,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:24:22,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:24:22,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:24:22,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:24:22,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:24:22,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:24:22,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:24:22,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:24:22,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:24:22,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:24:22,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:24:22,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:24:22,154 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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:24:22,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:24:22,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:24:22,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:24:22,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:24:22,493 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:24:22,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-08-21 17:24:22,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d06bd9db/e93ca5ddbff04fc5b4f6b67b23dcbab2/FLAGed962047d [2020-08-21 17:24:23,150 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:24:23,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-08-21 17:24:23,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d06bd9db/e93ca5ddbff04fc5b4f6b67b23dcbab2/FLAGed962047d [2020-08-21 17:24:23,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d06bd9db/e93ca5ddbff04fc5b4f6b67b23dcbab2 [2020-08-21 17:24:23,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:24:23,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:24:23,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:24:23,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:24:23,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:24:23,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:24:23" (1/1) ... [2020-08-21 17:24:23,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489547ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:23, skipping insertion in model container [2020-08-21 17:24:23,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:24:23" (1/1) ... [2020-08-21 17:24:23,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:24:23,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:24:24,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:24:24,097 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:24:24,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:24:24,237 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:24:24,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24 WrapperNode [2020-08-21 17:24:24,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:24:24,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:24:24,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:24:24,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:24:24,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (1/1) ... [2020-08-21 17:24:24,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (1/1) ... [2020-08-21 17:24:24,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (1/1) ... [2020-08-21 17:24:24,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (1/1) ... [2020-08-21 17:24:24,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (1/1) ... [2020-08-21 17:24:24,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (1/1) ... [2020-08-21 17:24:24,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (1/1) ... [2020-08-21 17:24:24,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:24:24,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:24:24,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:24:24,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:24:24,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (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 17:24:24,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:24:24,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:24:24,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-21 17:24:24,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:24:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-21 17:24:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:24:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:24:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 17:24:24,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:24:24,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:24:24,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:24:25,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:24:25,946 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 17:24:25,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:24:25 BoogieIcfgContainer [2020-08-21 17:24:25,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:24:25,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:24:25,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:24:25,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:24:25,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:24:23" (1/3) ... [2020-08-21 17:24:25,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297b0627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:24:25, skipping insertion in model container [2020-08-21 17:24:25,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:24:24" (2/3) ... [2020-08-21 17:24:25,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297b0627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:24:25, skipping insertion in model container [2020-08-21 17:24:25,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:24:25" (3/3) ... [2020-08-21 17:24:25,963 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label19.c [2020-08-21 17:24:25,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:24:25,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:24:26,004 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:24:26,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:24:26,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:24:26,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:24:26,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:24:26,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:24:26,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:24:26,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:24:26,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:24:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-08-21 17:24:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-21 17:24:26,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:26,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:26,083 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:26,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1418549242, now seen corresponding path program 1 times [2020-08-21 17:24:26,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:26,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488879861] [2020-08-21 17:24:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:26,437 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 17:24:26,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488879861] [2020-08-21 17:24:26,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:24:26,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:24:26,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45935411] [2020-08-21 17:24:26,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:24:26,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:26,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:24:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:24:26,466 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 4 states. [2020-08-21 17:24:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:28,096 INFO L93 Difference]: Finished difference Result 596 states and 1022 transitions. [2020-08-21 17:24:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:24:28,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-08-21 17:24:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:28,116 INFO L225 Difference]: With dead ends: 596 [2020-08-21 17:24:28,116 INFO L226 Difference]: Without dead ends: 302 [2020-08-21 17:24:28,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:24:28,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-08-21 17:24:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 296. [2020-08-21 17:24:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-21 17:24:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 448 transitions. [2020-08-21 17:24:28,204 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 448 transitions. Word has length 35 [2020-08-21 17:24:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:28,204 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 448 transitions. [2020-08-21 17:24:28,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:24:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 448 transitions. [2020-08-21 17:24:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 17:24:28,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:28,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:28,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:24:28,211 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:28,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:28,211 INFO L82 PathProgramCache]: Analyzing trace with hash -945859230, now seen corresponding path program 1 times [2020-08-21 17:24:28,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:28,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265821519] [2020-08-21 17:24:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:28,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:28,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:24:28,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265821519] [2020-08-21 17:24:28,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:28,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 17:24:28,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45518328] [2020-08-21 17:24:28,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:24:28,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:28,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:24:28,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:24:28,548 INFO L87 Difference]: Start difference. First operand 296 states and 448 transitions. Second operand 7 states. [2020-08-21 17:24:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:30,853 INFO L93 Difference]: Finished difference Result 1462 states and 2300 transitions. [2020-08-21 17:24:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:24:30,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-08-21 17:24:30,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:30,863 INFO L225 Difference]: With dead ends: 1462 [2020-08-21 17:24:30,864 INFO L226 Difference]: Without dead ends: 1172 [2020-08-21 17:24:30,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:24:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-21 17:24:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 876. [2020-08-21 17:24:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-08-21 17:24:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1308 transitions. [2020-08-21 17:24:30,933 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1308 transitions. Word has length 105 [2020-08-21 17:24:30,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:30,934 INFO L479 AbstractCegarLoop]: Abstraction has 876 states and 1308 transitions. [2020-08-21 17:24:30,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:24:30,934 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1308 transitions. [2020-08-21 17:24:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 17:24:30,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:30,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:30,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:24:30,939 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:30,939 INFO L82 PathProgramCache]: Analyzing trace with hash -969660742, now seen corresponding path program 1 times [2020-08-21 17:24:30,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:30,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708134255] [2020-08-21 17:24:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:31,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:24:31,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708134255] [2020-08-21 17:24:31,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:24:31,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:24:31,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402041509] [2020-08-21 17:24:31,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:24:31,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:31,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:24:31,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:24:31,196 INFO L87 Difference]: Start difference. First operand 876 states and 1308 transitions. Second operand 8 states. [2020-08-21 17:24:33,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:33,241 INFO L93 Difference]: Finished difference Result 3095 states and 4845 transitions. [2020-08-21 17:24:33,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:24:33,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-08-21 17:24:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:33,265 INFO L225 Difference]: With dead ends: 3095 [2020-08-21 17:24:33,266 INFO L226 Difference]: Without dead ends: 2225 [2020-08-21 17:24:33,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:24:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2020-08-21 17:24:33,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 1776. [2020-08-21 17:24:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-08-21 17:24:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2592 transitions. [2020-08-21 17:24:33,379 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2592 transitions. Word has length 117 [2020-08-21 17:24:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:33,381 INFO L479 AbstractCegarLoop]: Abstraction has 1776 states and 2592 transitions. [2020-08-21 17:24:33,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:24:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2592 transitions. [2020-08-21 17:24:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-21 17:24:33,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:33,402 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:33,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:24:33,403 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:33,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1119643437, now seen corresponding path program 1 times [2020-08-21 17:24:33,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:33,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077985977] [2020-08-21 17:24:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:33,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 17:24:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 56 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 17:24:33,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077985977] [2020-08-21 17:24:33,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:33,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 17:24:33,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098383060] [2020-08-21 17:24:33,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:24:33,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:24:33,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:24:33,800 INFO L87 Difference]: Start difference. First operand 1776 states and 2592 transitions. Second operand 7 states. [2020-08-21 17:24:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:35,375 INFO L93 Difference]: Finished difference Result 3715 states and 5444 transitions. [2020-08-21 17:24:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:24:35,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-08-21 17:24:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:35,387 INFO L225 Difference]: With dead ends: 3715 [2020-08-21 17:24:35,388 INFO L226 Difference]: Without dead ends: 1945 [2020-08-21 17:24:35,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:24:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-08-21 17:24:35,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1931. [2020-08-21 17:24:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1931 states. [2020-08-21 17:24:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2789 transitions. [2020-08-21 17:24:35,456 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2789 transitions. Word has length 204 [2020-08-21 17:24:35,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:35,457 INFO L479 AbstractCegarLoop]: Abstraction has 1931 states and 2789 transitions. [2020-08-21 17:24:35,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:24:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2789 transitions. [2020-08-21 17:24:35,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-08-21 17:24:35,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:35,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:35,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:24:35,464 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:35,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:35,465 INFO L82 PathProgramCache]: Analyzing trace with hash -298640055, now seen corresponding path program 1 times [2020-08-21 17:24:35,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:35,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146246346] [2020-08-21 17:24:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:35,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 17:24:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 60 proven. 74 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 17:24:35,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146246346] [2020-08-21 17:24:35,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:35,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 17:24:35,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458457037] [2020-08-21 17:24:35,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:24:35,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:35,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:24:35,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:24:35,852 INFO L87 Difference]: Start difference. First operand 1931 states and 2789 transitions. Second operand 10 states. [2020-08-21 17:24:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:38,360 INFO L93 Difference]: Finished difference Result 4084 states and 6092 transitions. [2020-08-21 17:24:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 17:24:38,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 234 [2020-08-21 17:24:38,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:38,375 INFO L225 Difference]: With dead ends: 4084 [2020-08-21 17:24:38,376 INFO L226 Difference]: Without dead ends: 2275 [2020-08-21 17:24:38,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-08-21 17:24:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2020-08-21 17:24:38,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2090. [2020-08-21 17:24:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2020-08-21 17:24:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2912 transitions. [2020-08-21 17:24:38,455 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2912 transitions. Word has length 234 [2020-08-21 17:24:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:38,456 INFO L479 AbstractCegarLoop]: Abstraction has 2090 states and 2912 transitions. [2020-08-21 17:24:38,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:24:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2912 transitions. [2020-08-21 17:24:38,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-08-21 17:24:38,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:38,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:38,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:24:38,464 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:38,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1047580335, now seen corresponding path program 1 times [2020-08-21 17:24:38,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:38,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112560731] [2020-08-21 17:24:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:24:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 17:24:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-08-21 17:24:38,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112560731] [2020-08-21 17:24:38,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:38,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 17:24:38,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45408460] [2020-08-21 17:24:38,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:24:38,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:38,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:24:38,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:24:38,773 INFO L87 Difference]: Start difference. First operand 2090 states and 2912 transitions. Second operand 7 states. [2020-08-21 17:24:40,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:40,630 INFO L93 Difference]: Finished difference Result 4776 states and 6899 transitions. [2020-08-21 17:24:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:24:40,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-08-21 17:24:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:40,646 INFO L225 Difference]: With dead ends: 4776 [2020-08-21 17:24:40,647 INFO L226 Difference]: Without dead ends: 2835 [2020-08-21 17:24:40,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:24:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2020-08-21 17:24:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2825. [2020-08-21 17:24:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2825 states. [2020-08-21 17:24:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 3890 transitions. [2020-08-21 17:24:40,744 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 3890 transitions. Word has length 274 [2020-08-21 17:24:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:40,745 INFO L479 AbstractCegarLoop]: Abstraction has 2825 states and 3890 transitions. [2020-08-21 17:24:40,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:24:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 3890 transitions. [2020-08-21 17:24:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-21 17:24:40,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:40,754 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:40,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:24:40,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:40,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:40,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2030676874, now seen corresponding path program 1 times [2020-08-21 17:24:40,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:40,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641976876] [2020-08-21 17:24:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:40,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:24:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 17:24:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 98 proven. 4 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-08-21 17:24:41,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641976876] [2020-08-21 17:24:41,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:41,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:24:41,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230888029] [2020-08-21 17:24:41,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:24:41,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:41,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:24:41,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:24:41,289 INFO L87 Difference]: Start difference. First operand 2825 states and 3890 transitions. Second operand 11 states. [2020-08-21 17:24:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:44,953 INFO L93 Difference]: Finished difference Result 6824 states and 9642 transitions. [2020-08-21 17:24:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 17:24:44,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 275 [2020-08-21 17:24:44,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:44,973 INFO L225 Difference]: With dead ends: 6824 [2020-08-21 17:24:44,974 INFO L226 Difference]: Without dead ends: 4148 [2020-08-21 17:24:44,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-08-21 17:24:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2020-08-21 17:24:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3564. [2020-08-21 17:24:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3564 states. [2020-08-21 17:24:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4917 transitions. [2020-08-21 17:24:45,088 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4917 transitions. Word has length 275 [2020-08-21 17:24:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:45,089 INFO L479 AbstractCegarLoop]: Abstraction has 3564 states and 4917 transitions. [2020-08-21 17:24:45,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:24:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4917 transitions. [2020-08-21 17:24:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-21 17:24:45,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:45,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:45,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:24:45,101 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:45,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:45,102 INFO L82 PathProgramCache]: Analyzing trace with hash -687767546, now seen corresponding path program 1 times [2020-08-21 17:24:45,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:45,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34911415] [2020-08-21 17:24:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:45,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:24:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-21 17:24:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 155 proven. 144 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 17:24:45,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34911415] [2020-08-21 17:24:45,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:45,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 17:24:45,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782296051] [2020-08-21 17:24:45,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:24:45,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:45,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:24:45,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:24:45,817 INFO L87 Difference]: Start difference. First operand 3564 states and 4917 transitions. Second operand 11 states. [2020-08-21 17:24:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:49,124 INFO L93 Difference]: Finished difference Result 7722 states and 10706 transitions. [2020-08-21 17:24:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 17:24:49,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 283 [2020-08-21 17:24:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:49,148 INFO L225 Difference]: With dead ends: 7722 [2020-08-21 17:24:49,148 INFO L226 Difference]: Without dead ends: 4307 [2020-08-21 17:24:49,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-08-21 17:24:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2020-08-21 17:24:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4146. [2020-08-21 17:24:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4146 states. [2020-08-21 17:24:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 5674 transitions. [2020-08-21 17:24:49,288 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 5674 transitions. Word has length 283 [2020-08-21 17:24:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:49,288 INFO L479 AbstractCegarLoop]: Abstraction has 4146 states and 5674 transitions. [2020-08-21 17:24:49,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:24:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 5674 transitions. [2020-08-21 17:24:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-08-21 17:24:49,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:49,303 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:49,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:24:49,305 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:49,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2026736261, now seen corresponding path program 1 times [2020-08-21 17:24:49,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:49,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006178469] [2020-08-21 17:24:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:49,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 17:24:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:49,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-21 17:24:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 157 proven. 172 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 17:24:49,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006178469] [2020-08-21 17:24:49,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:49,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 17:24:49,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428439764] [2020-08-21 17:24:49,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:24:49,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:49,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:24:49,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:24:49,991 INFO L87 Difference]: Start difference. First operand 4146 states and 5674 transitions. Second operand 11 states. [2020-08-21 17:24:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:53,603 INFO L93 Difference]: Finished difference Result 8308 states and 11483 transitions. [2020-08-21 17:24:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 17:24:53,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 320 [2020-08-21 17:24:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:53,625 INFO L225 Difference]: With dead ends: 8308 [2020-08-21 17:24:53,626 INFO L226 Difference]: Without dead ends: 4311 [2020-08-21 17:24:53,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2020-08-21 17:24:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2020-08-21 17:24:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 4295. [2020-08-21 17:24:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2020-08-21 17:24:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 5854 transitions. [2020-08-21 17:24:53,781 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 5854 transitions. Word has length 320 [2020-08-21 17:24:53,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:53,782 INFO L479 AbstractCegarLoop]: Abstraction has 4295 states and 5854 transitions. [2020-08-21 17:24:53,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:24:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 5854 transitions. [2020-08-21 17:24:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-08-21 17:24:53,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:53,800 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:53,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:24:53,801 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:53,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:53,801 INFO L82 PathProgramCache]: Analyzing trace with hash -569256943, now seen corresponding path program 1 times [2020-08-21 17:24:53,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:53,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082881402] [2020-08-21 17:24:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:54,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 17:24:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-21 17:24:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-21 17:24:54,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082881402] [2020-08-21 17:24:54,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:54,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 17:24:54,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025464467] [2020-08-21 17:24:54,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:24:54,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:54,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:24:54,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:24:54,363 INFO L87 Difference]: Start difference. First operand 4295 states and 5854 transitions. Second operand 9 states. [2020-08-21 17:24:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:24:57,046 INFO L93 Difference]: Finished difference Result 8910 states and 12332 transitions. [2020-08-21 17:24:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:24:57,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 342 [2020-08-21 17:24:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:24:57,068 INFO L225 Difference]: With dead ends: 8910 [2020-08-21 17:24:57,069 INFO L226 Difference]: Without dead ends: 4764 [2020-08-21 17:24:57,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:24:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2020-08-21 17:24:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4738. [2020-08-21 17:24:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4738 states. [2020-08-21 17:24:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6409 transitions. [2020-08-21 17:24:57,198 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6409 transitions. Word has length 342 [2020-08-21 17:24:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:24:57,199 INFO L479 AbstractCegarLoop]: Abstraction has 4738 states and 6409 transitions. [2020-08-21 17:24:57,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:24:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6409 transitions. [2020-08-21 17:24:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-08-21 17:24:57,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:24:57,211 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:24:57,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:24:57,212 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:24:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:24:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1742025105, now seen corresponding path program 1 times [2020-08-21 17:24:57,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:24:57,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582818603] [2020-08-21 17:24:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:24:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:24:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:24:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 17:24:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:57,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-21 17:24:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:24:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 173 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-08-21 17:24:57,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582818603] [2020-08-21 17:24:57,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:24:57,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 17:24:57,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584828581] [2020-08-21 17:24:57,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:24:57,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:24:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:24:57,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:24:57,731 INFO L87 Difference]: Start difference. First operand 4738 states and 6409 transitions. Second operand 9 states. [2020-08-21 17:24:58,238 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-08-21 17:25:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:25:00,345 INFO L93 Difference]: Finished difference Result 10944 states and 14735 transitions. [2020-08-21 17:25:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:25:00,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 342 [2020-08-21 17:25:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:25:00,369 INFO L225 Difference]: With dead ends: 10944 [2020-08-21 17:25:00,370 INFO L226 Difference]: Without dead ends: 6355 [2020-08-21 17:25:00,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-08-21 17:25:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6355 states. [2020-08-21 17:25:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6355 to 6347. [2020-08-21 17:25:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6347 states. [2020-08-21 17:25:00,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6347 states to 6347 states and 8305 transitions. [2020-08-21 17:25:00,520 INFO L78 Accepts]: Start accepts. Automaton has 6347 states and 8305 transitions. Word has length 342 [2020-08-21 17:25:00,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:25:00,520 INFO L479 AbstractCegarLoop]: Abstraction has 6347 states and 8305 transitions. [2020-08-21 17:25:00,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:25:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6347 states and 8305 transitions. [2020-08-21 17:25:00,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-08-21 17:25:00,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:25:00,534 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:25:00,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:25:00,534 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:25:00,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:25:00,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1313031034, now seen corresponding path program 1 times [2020-08-21 17:25:00,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:25:00,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368394407] [2020-08-21 17:25:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:25:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:25:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:25:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:25:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 17:25:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:25:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 17:25:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:25:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 17:25:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:25:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 81 proven. 21 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-21 17:25:01,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368394407] [2020-08-21 17:25:01,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:25:01,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 17:25:01,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512247949] [2020-08-21 17:25:01,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:25:01,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:25:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:25:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:25:01,004 INFO L87 Difference]: Start difference. First operand 6347 states and 8305 transitions. Second operand 8 states. [2020-08-21 17:25:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:25:02,688 INFO L93 Difference]: Finished difference Result 11665 states and 15407 transitions. [2020-08-21 17:25:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:25:02,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 347 [2020-08-21 17:25:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:25:02,691 INFO L225 Difference]: With dead ends: 11665 [2020-08-21 17:25:02,691 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:25:02,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:25:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:25:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:25:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:25:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:25:02,711 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 347 [2020-08-21 17:25:02,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:25:02,712 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:25:02,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:25:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:25:02,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:25:02,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 17:25:02,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:25:03,227 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 143 [2020-08-21 17:25:03,394 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 143 [2020-08-21 17:25:04,067 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 32 [2020-08-21 17:25:04,388 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 35 [2020-08-21 17:25:04,654 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 35 [2020-08-21 17:25:04,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:25:04,659 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~inputC~0 |old(~inputC~0)|) (= ~inputF~0 |old(~inputF~0)|) (= ~inputE~0 |old(~inputE~0)|) (= ~inputD~0 |old(~inputD~0)|) (= ~a12~0 |old(~a12~0)|) (= ~inputB~0 |old(~inputB~0)|) (= ~a4~0 |old(~a4~0)|) (= ~a1~0 |old(~a1~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a10~0 |old(~a10~0)|)) [2020-08-21 17:25:04,659 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:25:04,659 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-08-21 17:25:04,659 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,659 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,660 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,660 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,660 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,660 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,660 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-08-21 17:25:04,660 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-08-21 17:25:04,660 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-08-21 17:25:04,661 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-08-21 17:25:04,661 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-08-21 17:25:04,661 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-08-21 17:25:04,661 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-08-21 17:25:04,661 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-08-21 17:25:04,662 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-08-21 17:25:04,662 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-08-21 17:25:04,662 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-08-21 17:25:04,662 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,662 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,662 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,662 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,663 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,663 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-08-21 17:25:04,663 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-08-21 17:25:04,663 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-08-21 17:25:04,663 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-08-21 17:25:04,663 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-08-21 17:25:04,663 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-08-21 17:25:04,664 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-08-21 17:25:04,664 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-21 17:25:04,664 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-08-21 17:25:04,664 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-08-21 17:25:04,664 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-08-21 17:25:04,664 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-08-21 17:25:04,664 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-08-21 17:25:04,665 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-08-21 17:25:04,665 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-08-21 17:25:04,665 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,665 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,665 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,665 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,665 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,666 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-08-21 17:25:04,666 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-21 17:25:04,666 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-08-21 17:25:04,666 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-08-21 17:25:04,666 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-08-21 17:25:04,666 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-08-21 17:25:04,666 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-08-21 17:25:04,667 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-08-21 17:25:04,667 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-08-21 17:25:04,667 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-08-21 17:25:04,667 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,667 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,667 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,667 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,668 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,668 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-08-21 17:25:04,668 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-08-21 17:25:04,668 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-08-21 17:25:04,668 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-08-21 17:25:04,668 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-08-21 17:25:04,669 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-08-21 17:25:04,669 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-08-21 17:25:04,669 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-08-21 17:25:04,669 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-08-21 17:25:04,669 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-08-21 17:25:04,669 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-08-21 17:25:04,669 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-08-21 17:25:04,669 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-08-21 17:25:04,670 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,670 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,670 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,670 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,670 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,670 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-08-21 17:25:04,670 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-08-21 17:25:04,670 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-08-21 17:25:04,671 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-08-21 17:25:04,671 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-08-21 17:25:04,671 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-08-21 17:25:04,671 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-08-21 17:25:04,671 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-08-21 17:25:04,671 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-08-21 17:25:04,671 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,672 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,672 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,672 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,672 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,672 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,672 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,672 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-08-21 17:25:04,673 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-08-21 17:25:04,673 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-08-21 17:25:04,673 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-08-21 17:25:04,673 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-08-21 17:25:04,673 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-08-21 17:25:04,673 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-08-21 17:25:04,673 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-08-21 17:25:04,673 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-08-21 17:25:04,674 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-08-21 17:25:04,674 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-08-21 17:25:04,674 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-08-21 17:25:04,674 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-08-21 17:25:04,674 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,674 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,674 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,675 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,675 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-08-21 17:25:04,675 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,675 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,675 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-08-21 17:25:04,675 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-08-21 17:25:04,675 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-08-21 17:25:04,676 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-21 17:25:04,676 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-08-21 17:25:04,676 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-08-21 17:25:04,676 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-21 17:25:04,676 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-08-21 17:25:04,676 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-08-21 17:25:04,676 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-08-21 17:25:04,677 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-08-21 17:25:04,677 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-08-21 17:25:04,677 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-08-21 17:25:04,677 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,677 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,677 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,677 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,677 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,678 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,678 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-08-21 17:25:04,678 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-08-21 17:25:04,678 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-08-21 17:25:04,678 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-08-21 17:25:04,678 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-08-21 17:25:04,678 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-08-21 17:25:04,678 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-08-21 17:25:04,679 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-08-21 17:25:04,679 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-08-21 17:25:04,679 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-08-21 17:25:04,679 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-08-21 17:25:04,679 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (and (= ~a1~0 |old(~a1~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a10~0 |old(~a10~0)|))) (.cse1 (not (= 14 ~a4~0))) (.cse2 (not (= ~a12~0 0)))) (and (or (= 7 |old(~a19~0)|) .cse0 .cse1 .cse2) (or .cse0 (= 4 |old(~a10~0)|) .cse1 (not (<= 1 |old(~a10~0)|)) .cse2) (or (not (<= 23 |old(~a1~0)|)) .cse0 .cse1 .cse2))) [2020-08-21 17:25:04,679 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-08-21 17:25:04,680 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-08-21 17:25:04,680 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-08-21 17:25:04,680 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,680 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,680 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,680 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,680 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,680 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,681 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-08-21 17:25:04,681 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-08-21 17:25:04,681 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-08-21 17:25:04,681 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-08-21 17:25:04,681 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-08-21 17:25:04,681 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-08-21 17:25:04,681 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-08-21 17:25:04,682 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-08-21 17:25:04,682 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-08-21 17:25:04,682 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-08-21 17:25:04,682 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-08-21 17:25:04,682 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-08-21 17:25:04,682 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-08-21 17:25:04,682 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,682 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,683 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,683 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,683 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,683 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,683 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-08-21 17:25:04,683 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-08-21 17:25:04,683 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-08-21 17:25:04,683 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-08-21 17:25:04,684 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,685 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,685 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,685 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,685 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,685 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-08-21 17:25:04,685 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-08-21 17:25:04,685 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-08-21 17:25:04,685 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-08-21 17:25:04,686 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-08-21 17:25:04,687 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:25:04,687 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 23 ~a1~0) (= 14 ~a4~0) (= ~a10~0 0) (= ~a12~0 0) (= ~a19~0 9) (<= ~a1~0 23)) [2020-08-21 17:25:04,687 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 17:25:04,687 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:25:04,687 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (<= 23 |old(~a1~0)|)) (and (<= 23 ~a1~0) (<= ~a1~0 23) (= ~a19~0 |old(~a19~0)|) (= ~a10~0 |old(~a10~0)|)) (not (= 9 |old(~a19~0)|)) (not (<= |old(~a1~0)| 23)) (not (= 14 ~a4~0)) (not (= 0 |old(~a10~0)|)) (not (= ~a12~0 0))) [2020-08-21 17:25:04,687 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-08-21 17:25:04,688 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (not (<= 23 |old(~a1~0)|)) (<= 23 ~a1~0) (not (= 9 |old(~a19~0)|)) (not (<= |old(~a1~0)| 23)) (not (= 14 ~a4~0)) (not (= 0 |old(~a10~0)|)) (not (= 7 ~a19~0)) (not (= ~a12~0 0)) (and (not (= ~a10~0 4)) (<= 1 ~a10~0))) [2020-08-21 17:25:04,688 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-08-21 17:25:04,688 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-08-21 17:25:04,688 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (not (<= 23 |old(~a1~0)|)) (<= 23 ~a1~0) (not (= 9 |old(~a19~0)|)) (not (<= |old(~a1~0)| 23)) (not (= 14 ~a4~0)) (not (= 0 |old(~a10~0)|)) (not (= 7 ~a19~0)) (not (= ~a12~0 0)) (and (not (= ~a10~0 4)) (<= 1 ~a10~0))) [2020-08-21 17:25:04,688 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-08-21 17:25:04,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:25:04 BoogieIcfgContainer [2020-08-21 17:25:04,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:25:04,717 INFO L168 Benchmark]: Toolchain (without parser) took 41262.21 ms. Allocated memory was 138.4 MB in the beginning and 768.6 MB in the end (delta: 630.2 MB). Free memory was 100.4 MB in the beginning and 608.8 MB in the end (delta: -508.4 MB). Peak memory consumption was 664.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:25:04,718 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 17:25:04,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.25 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.2 MB in the beginning and 168.5 MB in the end (delta: -68.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:25:04,719 INFO L168 Benchmark]: Boogie Preprocessor took 135.70 ms. Allocated memory is still 202.9 MB. Free memory was 168.5 MB in the beginning and 164.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-21 17:25:04,720 INFO L168 Benchmark]: RCFGBuilder took 1577.79 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 164.1 MB in the beginning and 176.9 MB in the end (delta: -12.7 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-08-21 17:25:04,721 INFO L168 Benchmark]: TraceAbstraction took 38760.73 ms. Allocated memory was 234.4 MB in the beginning and 768.6 MB in the end (delta: 534.2 MB). Free memory was 176.9 MB in the beginning and 608.8 MB in the end (delta: -432.0 MB). Peak memory consumption was 645.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:25:04,724 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.25 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.2 MB in the beginning and 168.5 MB in the end (delta: -68.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.70 ms. Allocated memory is still 202.9 MB. Free memory was 168.5 MB in the beginning and 164.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1577.79 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 164.1 MB in the beginning and 176.9 MB in the end (delta: -12.7 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38760.73 ms. Allocated memory was 234.4 MB in the beginning and 768.6 MB in the end (delta: 534.2 MB). Free memory was 176.9 MB in the beginning and 608.8 MB in the end (delta: -432.0 MB). Peak memory consumption was 645.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 582]: Loop Invariant Derived loop invariant: (((((((!(23 <= \old(a1)) || 23 <= a1) || !(9 == \old(a19))) || !(\old(a1) <= 23)) || !(14 == a4)) || !(0 == \old(a10))) || !(7 == a19)) || !(a12 == 0)) || (!(a10 == 4) && 1 <= a10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.6s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 29.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 356 SDtfs, 9717 SDslu, 542 SDs, 0 SdLazy, 16812 SolverSat, 2815 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6347occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 1755 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 260 PreInvPairs, 344 NumberOfFragments, 241 HoareAnnotationTreeSize, 260 FomulaSimplifications, 28880 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7078 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 2878 NumberOfCodeBlocks, 2878 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2866 ConstructedInterpolants, 0 QuantifiedInterpolants, 2583626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 2024/2606 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...