/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/Problem02_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:28:43,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:28:43,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:28:43,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 01:28:43,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:28:43,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:28:43,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:28:43,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:28:43,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:28:43,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:28:43,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:28:43,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:28:43,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:28:43,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:28:43,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:28:43,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:28:43,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 01:28:43,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:28:43,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:28:43,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:28:43,779 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 [2020-08-22 01:28:43,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:28:43,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:28:43,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:28:43,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:28:43,810 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:28:43,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:28:43,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:28:43,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:28:43,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:28:43,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:28:43,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:28:43,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:28:43,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:28:43,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:28:43,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:28:43,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:28:43,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:28:43,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:28:43,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:28:43,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:28:43,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:28:43,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:28:43,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:28:43,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:28:43,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:28:43,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:28:43,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:28:43,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:28:43,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:28:43,815 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:28:44,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:28:44,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:28:44,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:28:44,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:28:44,158 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:28:44,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-08-22 01:28:44,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11c884bc8/b9195b5b29b4421bbc0b59324c01d7bb/FLAG8d9616d14 [2020-08-22 01:28:44,839 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:28:44,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-08-22 01:28:44,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11c884bc8/b9195b5b29b4421bbc0b59324c01d7bb/FLAG8d9616d14 [2020-08-22 01:28:45,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11c884bc8/b9195b5b29b4421bbc0b59324c01d7bb [2020-08-22 01:28:45,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:28:45,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:28:45,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:28:45,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:28:45,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:28:45,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:45,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45, skipping insertion in model container [2020-08-22 01:28:45,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:45,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:28:45,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:28:45,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:28:45,667 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:28:45,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:28:45,923 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:28:45,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45 WrapperNode [2020-08-22 01:28:45,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:28:45,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:28:45,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:28:45,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:28:45,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:45,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:45,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:45,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:46,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:46,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:46,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (1/1) ... [2020-08-22 01:28:46,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:28:46,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:28:46,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:28:46,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:28:46,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (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 [2020-08-22 01:28:46,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:28:46,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:28:46,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-22 01:28:46,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:28:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-22 01:28:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:28:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:28:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 01:28:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:28:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:28:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:28:47,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:28:47,641 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 01:28:47,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:28:47 BoogieIcfgContainer [2020-08-22 01:28:47,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:28:47,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:28:47,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:28:47,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:28:47,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:28:45" (1/3) ... [2020-08-22 01:28:47,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d31136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:28:47, skipping insertion in model container [2020-08-22 01:28:47,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:28:45" (2/3) ... [2020-08-22 01:28:47,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d31136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:28:47, skipping insertion in model container [2020-08-22 01:28:47,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:28:47" (3/3) ... [2020-08-22 01:28:47,656 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label43.c [2020-08-22 01:28:47,667 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:28:47,675 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:28:47,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:28:47,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:28:47,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:28:47,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:28:47,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:28:47,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:28:47,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:28:47,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:28:47,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:28:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-08-22 01:28:47,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 01:28:47,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:28:47,749 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, 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] [2020-08-22 01:28:47,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:28:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:28:47,756 INFO L82 PathProgramCache]: Analyzing trace with hash 389606425, now seen corresponding path program 1 times [2020-08-22 01:28:47,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:28:47,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764926507] [2020-08-22 01:28:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:28:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:28:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:28:48,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764926507] [2020-08-22 01:28:48,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:28:48,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:28:48,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752417877] [2020-08-22 01:28:48,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:28:48,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:28:48,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:28:48,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:28:48,311 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 4 states. [2020-08-22 01:28:49,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:28:49,992 INFO L93 Difference]: Finished difference Result 651 states and 1104 transitions. [2020-08-22 01:28:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:28:49,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-08-22 01:28:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:28:50,020 INFO L225 Difference]: With dead ends: 651 [2020-08-22 01:28:50,020 INFO L226 Difference]: Without dead ends: 336 [2020-08-22 01:28:50,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:28:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-22 01:28:50,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 323. [2020-08-22 01:28:50,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-22 01:28:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 475 transitions. [2020-08-22 01:28:50,121 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 475 transitions. Word has length 91 [2020-08-22 01:28:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:28:50,122 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 475 transitions. [2020-08-22 01:28:50,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:28:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 475 transitions. [2020-08-22 01:28:50,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 01:28:50,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:28:50,128 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:28:50,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:28:50,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:28:50,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:28:50,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1705382370, now seen corresponding path program 1 times [2020-08-22 01:28:50,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:28:50,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789007984] [2020-08-22 01:28:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:28:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:28:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 01:28:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:28:50,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789007984] [2020-08-22 01:28:50,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:28:50,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:28:50,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757390646] [2020-08-22 01:28:50,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:28:50,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:28:50,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:28:50,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:28:50,444 INFO L87 Difference]: Start difference. First operand 323 states and 475 transitions. Second operand 8 states. [2020-08-22 01:28:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:28:52,826 INFO L93 Difference]: Finished difference Result 1263 states and 1924 transitions. [2020-08-22 01:28:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 01:28:52,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-08-22 01:28:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:28:52,836 INFO L225 Difference]: With dead ends: 1263 [2020-08-22 01:28:52,836 INFO L226 Difference]: Without dead ends: 946 [2020-08-22 01:28:52,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:28:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-08-22 01:28:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 780. [2020-08-22 01:28:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2020-08-22 01:28:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1063 transitions. [2020-08-22 01:28:52,898 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1063 transitions. Word has length 99 [2020-08-22 01:28:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:28:52,898 INFO L479 AbstractCegarLoop]: Abstraction has 780 states and 1063 transitions. [2020-08-22 01:28:52,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:28:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1063 transitions. [2020-08-22 01:28:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 01:28:52,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:28:52,905 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:28:52,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:28:52,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:28:52,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:28:52,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1412739102, now seen corresponding path program 1 times [2020-08-22 01:28:52,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:28:52,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080011559] [2020-08-22 01:28:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:28:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:28:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:53,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 01:28:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:28:53,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080011559] [2020-08-22 01:28:53,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:28:53,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 01:28:53,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840841664] [2020-08-22 01:28:53,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:28:53,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:28:53,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:28:53,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:28:53,167 INFO L87 Difference]: Start difference. First operand 780 states and 1063 transitions. Second operand 5 states. [2020-08-22 01:28:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:28:54,423 INFO L93 Difference]: Finished difference Result 2305 states and 3257 transitions. [2020-08-22 01:28:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:28:54,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-08-22 01:28:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:28:54,435 INFO L225 Difference]: With dead ends: 2305 [2020-08-22 01:28:54,435 INFO L226 Difference]: Without dead ends: 1531 [2020-08-22 01:28:54,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:28:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-08-22 01:28:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1525. [2020-08-22 01:28:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2020-08-22 01:28:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1978 transitions. [2020-08-22 01:28:54,507 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1978 transitions. Word has length 112 [2020-08-22 01:28:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:28:54,508 INFO L479 AbstractCegarLoop]: Abstraction has 1525 states and 1978 transitions. [2020-08-22 01:28:54,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:28:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1978 transitions. [2020-08-22 01:28:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-22 01:28:54,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:28:54,515 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:28:54,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:28:54,515 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:28:54,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:28:54,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1624429431, now seen corresponding path program 1 times [2020-08-22 01:28:54,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:28:54,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118082254] [2020-08-22 01:28:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:28:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:54,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:28:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 01:28:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:28:54,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118082254] [2020-08-22 01:28:54,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:28:54,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:28:54,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490947431] [2020-08-22 01:28:54,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:28:54,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:28:54,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:28:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:28:54,741 INFO L87 Difference]: Start difference. First operand 1525 states and 1978 transitions. Second operand 8 states. [2020-08-22 01:28:56,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:28:56,995 INFO L93 Difference]: Finished difference Result 4217 states and 5554 transitions. [2020-08-22 01:28:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:28:56,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-08-22 01:28:56,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:28:57,012 INFO L225 Difference]: With dead ends: 4217 [2020-08-22 01:28:57,012 INFO L226 Difference]: Without dead ends: 1668 [2020-08-22 01:28:57,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:28:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-22 01:28:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1662. [2020-08-22 01:28:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2020-08-22 01:28:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2051 transitions. [2020-08-22 01:28:57,073 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2051 transitions. Word has length 117 [2020-08-22 01:28:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:28:57,073 INFO L479 AbstractCegarLoop]: Abstraction has 1662 states and 2051 transitions. [2020-08-22 01:28:57,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:28:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2051 transitions. [2020-08-22 01:28:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 01:28:57,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:28:57,078 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-08-22 01:28:57,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:28:57,079 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:28:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:28:57,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1171867363, now seen corresponding path program 1 times [2020-08-22 01:28:57,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:28:57,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942617045] [2020-08-22 01:28:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:28:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:28:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:57,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 01:28:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:28:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:28:57,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942617045] [2020-08-22 01:28:57,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:28:57,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 01:28:57,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869081563] [2020-08-22 01:28:57,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:28:57,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:28:57,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:28:57,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:28:57,215 INFO L87 Difference]: Start difference. First operand 1662 states and 2051 transitions. Second operand 7 states. [2020-08-22 01:28:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:28:58,389 INFO L93 Difference]: Finished difference Result 3378 states and 4326 transitions. [2020-08-22 01:28:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:28:58,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-08-22 01:28:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:28:58,400 INFO L225 Difference]: With dead ends: 3378 [2020-08-22 01:28:58,400 INFO L226 Difference]: Without dead ends: 1722 [2020-08-22 01:28:58,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:28:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-08-22 01:28:58,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1388. [2020-08-22 01:28:58,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-08-22 01:28:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1617 transitions. [2020-08-22 01:28:58,462 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1617 transitions. Word has length 120 [2020-08-22 01:28:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:28:58,462 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 1617 transitions. [2020-08-22 01:28:58,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:28:58,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1617 transitions. [2020-08-22 01:28:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-08-22 01:28:58,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:28:58,468 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, 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, 1, 1] [2020-08-22 01:28:58,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:28:58,468 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:28:58,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:28:58,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1300144537, now seen corresponding path program 1 times [2020-08-22 01:28:58,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:28:58,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407657212] [2020-08-22 01:28:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:28:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:28:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 01:28:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:28:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:28:58,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407657212] [2020-08-22 01:28:58,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:28:58,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 01:28:58,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137610349] [2020-08-22 01:28:58,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:28:58,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:28:58,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:28:58,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:28:58,644 INFO L87 Difference]: Start difference. First operand 1388 states and 1617 transitions. Second operand 5 states. [2020-08-22 01:28:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:28:59,704 INFO L93 Difference]: Finished difference Result 3508 states and 4213 transitions. [2020-08-22 01:28:59,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:28:59,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-08-22 01:28:59,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:28:59,723 INFO L225 Difference]: With dead ends: 3508 [2020-08-22 01:28:59,724 INFO L226 Difference]: Without dead ends: 2126 [2020-08-22 01:28:59,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:28:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2020-08-22 01:28:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1830. [2020-08-22 01:28:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1830 states. [2020-08-22 01:28:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2171 transitions. [2020-08-22 01:28:59,794 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2171 transitions. Word has length 125 [2020-08-22 01:28:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:28:59,796 INFO L479 AbstractCegarLoop]: Abstraction has 1830 states and 2171 transitions. [2020-08-22 01:28:59,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:28:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2171 transitions. [2020-08-22 01:28:59,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-08-22 01:28:59,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:28:59,801 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-08-22 01:28:59,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:28:59,802 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:28:59,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:28:59,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1079124894, now seen corresponding path program 1 times [2020-08-22 01:28:59,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:28:59,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138336780] [2020-08-22 01:28:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:28:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:28:59,843 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:28:59,843 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:28:59,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:28:59,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:28:59 BoogieIcfgContainer [2020-08-22 01:28:59,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:28:59,893 INFO L168 Benchmark]: Toolchain (without parser) took 14806.30 ms. Allocated memory was 144.7 MB in the beginning and 431.0 MB in the end (delta: 286.3 MB). Free memory was 99.6 MB in the beginning and 322.0 MB in the end (delta: -222.3 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2020-08-22 01:28:59,894 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 01:28:59,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 835.01 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.4 MB in the beginning and 168.0 MB in the end (delta: -68.5 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-08-22 01:28:59,902 INFO L168 Benchmark]: Boogie Preprocessor took 171.90 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 162.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-08-22 01:28:59,903 INFO L168 Benchmark]: RCFGBuilder took 1548.76 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 162.9 MB in the beginning and 178.5 MB in the end (delta: -15.6 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-08-22 01:28:59,903 INFO L168 Benchmark]: TraceAbstraction took 12240.94 ms. Allocated memory was 231.2 MB in the beginning and 431.0 MB in the end (delta: 199.8 MB). Free memory was 177.1 MB in the beginning and 322.0 MB in the end (delta: -144.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-08-22 01:28:59,914 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 835.01 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.4 MB in the beginning and 168.0 MB in the end (delta: -68.5 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.90 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 162.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1548.76 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 162.9 MB in the beginning and 178.5 MB in the end (delta: -15.6 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12240.94 ms. Allocated memory was 231.2 MB in the beginning and 431.0 MB in the end (delta: 199.8 MB). Free memory was 177.1 MB in the beginning and 322.0 MB in the end (delta: -144.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 427]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int a= 1; [L8] int e= 5; [L9] int d= 4; [L10] int f= 6; [L11] int c= 3; [L14] int u = 21; [L15] int v = 22; [L16] int w = 23; [L17] int x = 24; [L18] int y = 25; [L19] int z = 26; [L22] int a25 = 0; [L23] int a11 = 0; [L24] int a28 = 7; [L25] int a19 = 1; [L26] int a21 = 1; [L27] int a17 = 8; [L603] int output = -1; [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL, EXPR calculate_output(input) [L30] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L35] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L38] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L42] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L47] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L50] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L54] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L59] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L65] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L69] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L74] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L82] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L91] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L95] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L99] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L106] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L113] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L119] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L123] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L130] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L134] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L139] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L143] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L148] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L154] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L159] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L165] COND TRUE (((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1)) [L166] a25 = 1 [L167] a28 = 9 [L168] return 26; [L614] RET, EXPR calculate_output(input) [L614] output = calculate_output(input) [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL, EXPR calculate_output(input) [L30] COND TRUE (((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8)) [L31] a28 = 9 [L32] a11 = 1 [L33] a25 = 1 [L34] return -1; [L614] RET, EXPR calculate_output(input) [L614] output = calculate_output(input) [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL calculate_output(input) [L30] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L35] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L38] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L42] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L47] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L50] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L54] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L59] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L65] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L69] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L74] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L82] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L91] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L95] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L99] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L106] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L113] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L119] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L123] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L130] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L134] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L139] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L143] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L148] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L154] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L159] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L165] COND FALSE !((((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1))) [L169] COND FALSE !(((a28==11)&&(((a17==8)&&((((input==6)&&(a21==1))&&(a19==1))&&!(a25==1)))&&!(a11==1)))) [L175] COND FALSE !(((!(a11==1)&&(((a17==8)&&((a21==1)&&((input==3)&&(a28==8))))&&(a19==1)))&&(a25==1))) [L179] COND FALSE !((((a21==1)&&(((a19==1)&&(((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))&&(input==4)))&&(a11==1)))&&(a17==9))) [L185] COND FALSE !((((!(a11==1)&&((a17==8)&&(((input==4)&&(a19==1))&&(a28==8))))&&(a21==1))&&(a25==1))) [L187] COND FALSE !(((a19==1)&&((((((input==4)&&(a21==1))&&(a28==9))&&!(a25==1))&&!(a11==1))&&(a17==8)))) [L189] COND FALSE !(((a17==8)&&((((((input==1)&&(a21==1))&&!(a11==1))&&(a19==1))&&!(a25==1))&&(a28==9)))) [L191] COND FALSE !((((((((input==4)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a21==1))&&(a17==8))&&(a28==10))&&(a19==1))) [L194] COND FALSE !(((!(a25==1)&&((a11==1)&&((a28==8)&&(((a17==9)&&(input==4))&&(a19==1)))))&&(a21==1))) [L198] COND FALSE !((!(a19==1)&&((a17==8)&&((a28==10)&&(((a25==1)&&(!(a11==1)&&(input==5)))&&(a21==1)))))) [L202] COND FALSE !((((((a21==1)&&((input==1)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))))&&(a17==8))&&!(a11==1))&&(a19==1))) [L212] COND FALSE !(((a21==1)&&((((a19==1)&&((a25==1)&&((a28==11)&&(input==6))))&&!(a11==1))&&(a17==8)))) [L215] COND FALSE !((!(a11==1)&&((a19==1)&&((a28==10)&&(((((a25==1)||!(a25==1))&&(input==5))&&(a17==8))&&(a21==1)))))) [L218] COND FALSE !((((((a17==9)&&((((a25==1)||!(a25==1))&&(input==6))&&(a11==1)))&&(a19==1))&&(a21==1))&&(a28==9))) [L223] COND FALSE !((((a17==8)&&(((((input==6)&&(a25==1))&&!(a19==1))&&!(a11==1))&&(a28==10)))&&(a21==1))) [L225] COND FALSE !(((!(a19==1)&&((a17==8)&&(!(a11==1)&&((input==1)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))))&&(a21==1))) [L232] COND FALSE !((((((((input==1)&&(a21==1))&&(a28==9))&&!(a19==1))&&!(a25==1))&&(a17==8))&&!(a11==1))) [L234] COND FALSE !(((a17==8)&&(((!(a11==1)&&((!(a25==1)&&(input==4))&&(a19==1)))&&(a28==7))&&(a21==1)))) [L237] COND FALSE !((!(a11==1)&&(((a17==8)&&((((!(a25==1)&&(a28==11))||((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1))))&&(input==3))&&(a21==1)))&&!(a19==1)))) [L248] COND FALSE !(((((!(a11==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==5)))&&(a21==1))&&!(a19==1))&&(a17==8))) [L253] COND FALSE !((((a17==9)&&(((((input==1)&&((a25==1)||!(a25==1)))&&(a11==1))&&(a21==1))&&(a19==1)))&&(a28==9))) [L259] COND FALSE !((!(a11==1)&&((a19==1)&&(((((a28==9)&&(input==6))&&(a21==1))&&(a17==8))&&!(a25==1))))) [L261] COND FALSE !(((a17==9)&&((a21==1)&&((a11==1)&&(((input==3)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a19==1)))))) [L276] COND FALSE !(((a28==7)&&((a17==8)&&(!(a25==1)&&((a21==1)&&((a19==1)&&((input==5)&&!(a11==1)))))))) [L280] COND FALSE !(((a28==8)&&((a21==1)&&((!(a11==1)&&(((input==1)&&(a17==8))&&(a19==1)))&&(a25==1))))) [L283] COND FALSE !((((((a17==8)&&(((input==6)&&((a25==1)||!(a25==1)))&&(a21==1)))&&(a28==10))&&!(a11==1))&&(a19==1))) [L286] COND FALSE !(((!(a11==1)&&((!(a19==1)&&(((!(a25==1)&&(a28==11))||(((a28==10)&&!(a25==1))||((a25==1)&&(a28==11))))&&(input==5)))&&(a17==8)))&&(a21==1))) [L291] COND FALSE !(((a17==8)&&(((a21==1)&&(!(a11==1)&&((a25==1)&&((a28==8)&&(input==6)))))&&(a19==1)))) [L293] COND FALSE !((((a19==1)&&((a17==8)&&(((!(a25==1)&&(input==5))&&(a21==1))&&!(a11==1))))&&(a28==11))) [L297] COND FALSE !(((a11==1)&&(((a17==9)&&((a28==9)&&((a19==1)&&(((a25==1)||!(a25==1))&&(input==5)))))&&(a21==1)))) [L309] COND FALSE !((((((((input==3)&&(a19==1))&&(a21==1))&&(a17==8))&&!(a25==1))&&(a28==11))&&!(a11==1))) [L314] COND FALSE !(((a19==1)&&((a21==1)&&((((input==5)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a11==1))&&(a17==9))))) [L328] COND FALSE !((((a19==1)&&(((!(a11==1)&&(((a25==1)||!(a25==1))&&(input==3)))&&(a28==10))&&(a21==1)))&&(a17==8))) [L331] COND FALSE !(((!(a11==1)&&(((((input==4)&&(a17==8))&&!(a25==1))&&(a21==1))&&(a28==11)))&&(a19==1))) [L337] COND FALSE !((((!(a19==1)&&(((input==4)&&(((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1)))||(!(a25==1)&&(a28==11))))&&(a21==1)))&&(a17==8))&&!(a11==1))) [L349] COND FALSE !((!(a11==1)&&(((a17==8)&&((((a25==1)&&(input==4))&&(a19==1))&&(a28==11)))&&(a21==1)))) [L354] COND FALSE !((((((a21==1)&&((((a28==8)&&!(a25==1))||((a28==9)&&(a25==1)))&&(input==6)))&&!(a11==1))&&!(a19==1))&&(a17==8))) [L361] COND FALSE !(((a19==1)&&((((a21==1)&&((!(a25==1)&&(input==3))&&(a17==9)))&&(a28==8))&&(a11==1)))) [L368] COND FALSE !(((a17==8)&&(((a21==1)&&(((input==5)&&((!(a25==1)&&(a28==8))||((a28==9)&&(a25==1))))&&(a19==1)))&&!(a11==1)))) [L375] COND FALSE !(((a19==1)&&(((((a17==8)&&((input==5)&&!(a11==1)))&&(a21==1))&&(a25==1))&&(a28==8)))) [L378] COND FALSE !((((!(a11==1)&&((((a21==1)&&(input==4))&&(a28==10))&&(a17==8)))&&!(a19==1))&&(a25==1))) [L380] COND FALSE !(((a28==8)&&(((a19==1)&&((a11==1)&&(!(a25==1)&&((a17==9)&&(input==6)))))&&(a21==1)))) [L389] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==6)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))&&(a17==8))&&!(a19==1)))) [L394] COND FALSE !((((((!(a25==1)&&((a19==1)&&(input==3)))&&(a28==9))&&(a21==1))&&(a17==8))&&!(a11==1))) [L398] COND FALSE !((((a17==8)&&((((input==4)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9))))&&(a21==1))&&!(a19==1)))&&!(a11==1))) [L402] COND FALSE !((((!(a11==1)&&((((a19==1)&&(input==5))&&(a17==8))&&(a21==1)))&&(a28==9))&&!(a25==1))) [L404] COND FALSE !((((a11==1)&&((a19==1)&&((a21==1)&&(((a17==9)&&(input==5))&&!(a25==1)))))&&(a28==8))) [L407] COND FALSE !((!(a11==1)&&((a21==1)&&(((a19==1)&&((a17==8)&&((a25==1)&&(input==5))))&&(a28==11))))) [L409] COND FALSE !(((a19==1)&&((a17==8)&&(((((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))&&!(a11==1))&&(a21==1))))) [L414] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==7))&&!(a19==1))&&(a21==1))&&(a17==8))) [L417] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==10))&&(a19==1))&&(a21==1))&&(a17==8))) [L420] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==8))) [L423] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==7))) [L426] COND TRUE ((((((a25==1)&&(a11==1))&&(a28==9))&&(a19==1))&&(a21==1))&&(a17==8)) [L427] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.1s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 247 SDtfs, 3327 SDslu, 341 SDs, 0 SdLazy, 5495 SolverSat, 876 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1830occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 821 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 797 NumberOfCodeBlocks, 797 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 247616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 97/105 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...