/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=0.4 --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 [2020-08-21 23:51:03,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:51:03,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:51:03,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:51:03,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:51:03,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:51:03,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:51:03,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:51:03,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:51:03,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:51:03,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:51:03,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:51:03,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:51:03,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:51:03,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:51:03,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:51:03,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:51:03,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:51:03,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:51:03,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:51:03,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:51:03,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:51:03,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:51:03,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:51:03,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:51:03,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:51:03,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:51:03,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:51:03,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:51:03,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 23:51:03,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:51:03,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:51:03,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:51:03,421 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 23:51:03,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:51:03,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:51:03,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:51:03,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:51:03,460 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:51:03,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:51:03,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:51:03,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:51:03,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:51:03,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:51:03,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:51:03,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:51:03,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:51:03,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:51:03,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:51:03,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:51:03,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:51:03,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:51:03,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:51:03,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:51:03,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:51:03,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:51:03,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:51:03,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:51:03,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:51:03,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:51:03,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:51:03,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:51:03,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:51:03,467 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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-08-21 23:51:03,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:51:03,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:51:03,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:51:03,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:51:03,799 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:51:03,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-08-21 23:51:03,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb8798ad7/f321fc2a207d49d1bf0e3aa31b441db9/FLAG7fb37b8b7 [2020-08-21 23:51:04,444 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:51:04,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-08-21 23:51:04,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb8798ad7/f321fc2a207d49d1bf0e3aa31b441db9/FLAG7fb37b8b7 [2020-08-21 23:51:04,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb8798ad7/f321fc2a207d49d1bf0e3aa31b441db9 [2020-08-21 23:51:04,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:51:04,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:51:04,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:51:04,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:51:04,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:51:04,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:51:04" (1/1) ... [2020-08-21 23:51:04,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400dbee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:04, skipping insertion in model container [2020-08-21 23:51:04,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:51:04" (1/1) ... [2020-08-21 23:51:04,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:51:04,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:51:05,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:51:05,345 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:51:05,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:51:05,558 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:51:05,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05 WrapperNode [2020-08-21 23:51:05,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:51:05,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:51:05,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:51:05,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:51:05,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (1/1) ... [2020-08-21 23:51:05,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (1/1) ... [2020-08-21 23:51:05,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (1/1) ... [2020-08-21 23:51:05,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (1/1) ... [2020-08-21 23:51:05,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (1/1) ... [2020-08-21 23:51:05,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (1/1) ... [2020-08-21 23:51:05,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (1/1) ... [2020-08-21 23:51:05,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:51:05,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:51:05,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:51:05,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:51:05,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (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 23:51:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:51:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:51:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-21 23:51:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:51:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-21 23:51:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:51:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:51:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 23:51:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:51:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:51:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:51:06,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:51:06,967 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 23:51:06,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:51:06 BoogieIcfgContainer [2020-08-21 23:51:06,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:51:06,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:51:06,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:51:06,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:51:06,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:51:04" (1/3) ... [2020-08-21 23:51:06,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105782d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:51:06, skipping insertion in model container [2020-08-21 23:51:06,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:51:05" (2/3) ... [2020-08-21 23:51:06,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105782d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:51:06, skipping insertion in model container [2020-08-21 23:51:06,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:51:06" (3/3) ... [2020-08-21 23:51:06,993 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label43.c [2020-08-21 23:51:07,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:51:07,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:51:07,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:51:07,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:51:07,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:51:07,079 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:51:07,079 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:51:07,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:51:07,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:51:07,080 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:51:07,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:51:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-08-21 23:51:07,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 23:51:07,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:51:07,131 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] [2020-08-21 23:51:07,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:51:07,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:51:07,138 INFO L82 PathProgramCache]: Analyzing trace with hash 389606425, now seen corresponding path program 1 times [2020-08-21 23:51:07,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:51:07,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672720611] [2020-08-21 23:51:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:51:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:07,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:51:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:07,715 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 23:51:07,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672720611] [2020-08-21 23:51:07,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:51:07,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:51:07,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946754869] [2020-08-21 23:51:07,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:51:07,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:51:07,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:51:07,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:51:07,750 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 4 states. [2020-08-21 23:51:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:51:09,252 INFO L93 Difference]: Finished difference Result 651 states and 1104 transitions. [2020-08-21 23:51:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:51:09,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-08-21 23:51:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:51:09,271 INFO L225 Difference]: With dead ends: 651 [2020-08-21 23:51:09,271 INFO L226 Difference]: Without dead ends: 336 [2020-08-21 23:51:09,278 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 [2020-08-21 23:51:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-21 23:51:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 323. [2020-08-21 23:51:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-21 23:51:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 475 transitions. [2020-08-21 23:51:09,360 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 475 transitions. Word has length 91 [2020-08-21 23:51:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:51:09,360 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 475 transitions. [2020-08-21 23:51:09,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:51:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 475 transitions. [2020-08-21 23:51:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 23:51:09,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:51:09,367 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] [2020-08-21 23:51:09,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:51:09,368 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:51:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:51:09,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1705382370, now seen corresponding path program 1 times [2020-08-21 23:51:09,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:51:09,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109160476] [2020-08-21 23:51:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:51:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:09,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:51:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 23:51:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:51:09,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109160476] [2020-08-21 23:51:09,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:51:09,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:51:09,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069029377] [2020-08-21 23:51:09,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:51:09,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:51:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:51:09,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:51:09,673 INFO L87 Difference]: Start difference. First operand 323 states and 475 transitions. Second operand 8 states. [2020-08-21 23:51:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:51:11,936 INFO L93 Difference]: Finished difference Result 1263 states and 1924 transitions. [2020-08-21 23:51:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 23:51:11,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-08-21 23:51:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:51:11,946 INFO L225 Difference]: With dead ends: 1263 [2020-08-21 23:51:11,946 INFO L226 Difference]: Without dead ends: 946 [2020-08-21 23:51:11,949 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 [2020-08-21 23:51:11,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-08-21 23:51:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 780. [2020-08-21 23:51:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2020-08-21 23:51:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1063 transitions. [2020-08-21 23:51:12,022 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1063 transitions. Word has length 99 [2020-08-21 23:51:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:51:12,023 INFO L479 AbstractCegarLoop]: Abstraction has 780 states and 1063 transitions. [2020-08-21 23:51:12,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:51:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1063 transitions. [2020-08-21 23:51:12,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-21 23:51:12,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:51:12,033 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] [2020-08-21 23:51:12,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:51:12,033 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:51:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:51:12,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1412739102, now seen corresponding path program 1 times [2020-08-21 23:51:12,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:51:12,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203717121] [2020-08-21 23:51:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:51:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:12,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:51:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:12,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 23:51:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:51:12,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203717121] [2020-08-21 23:51:12,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:51:12,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 23:51:12,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236533102] [2020-08-21 23:51:12,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:51:12,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:51:12,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:51:12,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:51:12,325 INFO L87 Difference]: Start difference. First operand 780 states and 1063 transitions. Second operand 5 states. [2020-08-21 23:51:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:51:13,674 INFO L93 Difference]: Finished difference Result 2305 states and 3257 transitions. [2020-08-21 23:51:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:51:13,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-08-21 23:51:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:51:13,684 INFO L225 Difference]: With dead ends: 2305 [2020-08-21 23:51:13,685 INFO L226 Difference]: Without dead ends: 1531 [2020-08-21 23:51:13,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:51:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-08-21 23:51:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1525. [2020-08-21 23:51:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2020-08-21 23:51:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1978 transitions. [2020-08-21 23:51:13,757 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1978 transitions. Word has length 112 [2020-08-21 23:51:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:51:13,758 INFO L479 AbstractCegarLoop]: Abstraction has 1525 states and 1978 transitions. [2020-08-21 23:51:13,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:51:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1978 transitions. [2020-08-21 23:51:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 23:51:13,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:51:13,764 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] [2020-08-21 23:51:13,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:51:13,765 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:51:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:51:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1624429431, now seen corresponding path program 1 times [2020-08-21 23:51:13,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:51:13,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336712704] [2020-08-21 23:51:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:51:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:13,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:51:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 23:51:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:51:13,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336712704] [2020-08-21 23:51:13,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:51:13,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 23:51:13,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869985779] [2020-08-21 23:51:13,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:51:13,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:51:13,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:51:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:51:13,960 INFO L87 Difference]: Start difference. First operand 1525 states and 1978 transitions. Second operand 8 states. [2020-08-21 23:51:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:51:16,177 INFO L93 Difference]: Finished difference Result 4217 states and 5554 transitions. [2020-08-21 23:51:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:51:16,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-08-21 23:51:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:51:16,202 INFO L225 Difference]: With dead ends: 4217 [2020-08-21 23:51:16,202 INFO L226 Difference]: Without dead ends: 1668 [2020-08-21 23:51:16,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:51:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-21 23:51:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1662. [2020-08-21 23:51:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2020-08-21 23:51:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2051 transitions. [2020-08-21 23:51:16,309 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2051 transitions. Word has length 117 [2020-08-21 23:51:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:51:16,309 INFO L479 AbstractCegarLoop]: Abstraction has 1662 states and 2051 transitions. [2020-08-21 23:51:16,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:51:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2051 transitions. [2020-08-21 23:51:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-21 23:51:16,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:51:16,314 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] [2020-08-21 23:51:16,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:51:16,315 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:51:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:51:16,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1171867363, now seen corresponding path program 1 times [2020-08-21 23:51:16,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:51:16,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873972845] [2020-08-21 23:51:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:51:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:51:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:16,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 23:51:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:51:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 23:51:16,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873972845] [2020-08-21 23:51:16,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:51:16,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 23:51:16,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407141407] [2020-08-21 23:51:16,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:51:16,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:51:16,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:51:16,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:51:16,467 INFO L87 Difference]: Start difference. First operand 1662 states and 2051 transitions. Second operand 7 states. [2020-08-21 23:51:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:51:17,692 INFO L93 Difference]: Finished difference Result 3378 states and 4326 transitions. [2020-08-21 23:51:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:51:17,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-08-21 23:51:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:51:17,710 INFO L225 Difference]: With dead ends: 3378 [2020-08-21 23:51:17,710 INFO L226 Difference]: Without dead ends: 1722 [2020-08-21 23:51:17,714 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 [2020-08-21 23:51:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-08-21 23:51:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1388. [2020-08-21 23:51:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-08-21 23:51:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1617 transitions. [2020-08-21 23:51:17,772 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1617 transitions. Word has length 120 [2020-08-21 23:51:17,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:51:17,772 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 1617 transitions. [2020-08-21 23:51:17,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:51:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1617 transitions. [2020-08-21 23:51:17,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-08-21 23:51:17,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:51:17,778 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] [2020-08-21 23:51:17,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:51:17,779 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:51:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:51:17,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1300144537, now seen corresponding path program 1 times [2020-08-21 23:51:17,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:51:17,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133997179] [2020-08-21 23:51:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:51:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:17,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:51:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 23:51:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:51:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:51:17,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133997179] [2020-08-21 23:51:17,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:51:17,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 23:51:17,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598257612] [2020-08-21 23:51:17,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:51:17,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:51:17,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:51:17,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:51:17,934 INFO L87 Difference]: Start difference. First operand 1388 states and 1617 transitions. Second operand 5 states. [2020-08-21 23:51:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:51:19,035 INFO L93 Difference]: Finished difference Result 3508 states and 4213 transitions. [2020-08-21 23:51:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:51:19,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-08-21 23:51:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:51:19,051 INFO L225 Difference]: With dead ends: 3508 [2020-08-21 23:51:19,051 INFO L226 Difference]: Without dead ends: 2126 [2020-08-21 23:51:19,056 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 [2020-08-21 23:51:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2020-08-21 23:51:19,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1830. [2020-08-21 23:51:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1830 states. [2020-08-21 23:51:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2171 transitions. [2020-08-21 23:51:19,127 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2171 transitions. Word has length 125 [2020-08-21 23:51:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:51:19,129 INFO L479 AbstractCegarLoop]: Abstraction has 1830 states and 2171 transitions. [2020-08-21 23:51:19,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:51:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2171 transitions. [2020-08-21 23:51:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-08-21 23:51:19,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:51:19,135 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] [2020-08-21 23:51:19,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:51:19,136 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:51:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:51:19,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1079124894, now seen corresponding path program 1 times [2020-08-21 23:51:19,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:51:19,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317951978] [2020-08-21 23:51:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:51:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:51:19,215 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:51:19,215 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:51:19,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:51:19,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:51:19 BoogieIcfgContainer [2020-08-21 23:51:19,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:51:19,254 INFO L168 Benchmark]: Toolchain (without parser) took 14495.68 ms. Allocated memory was 141.0 MB in the beginning and 415.2 MB in the end (delta: 274.2 MB). Free memory was 101.0 MB in the beginning and 367.9 MB in the end (delta: -266.9 MB). Peak memory consumption was 285.8 MB. Max. memory is 7.1 GB. [2020-08-21 23:51:19,255 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:51:19,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.96 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 172.2 MB in the end (delta: -71.5 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:51:19,258 INFO L168 Benchmark]: Boogie Preprocessor took 101.53 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 166.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:51:19,261 INFO L168 Benchmark]: RCFGBuilder took 1319.14 ms. Allocated memory was 205.5 MB in the beginning and 237.0 MB in the end (delta: 31.5 MB). Free memory was 166.9 MB in the beginning and 177.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:51:19,262 INFO L168 Benchmark]: TraceAbstraction took 12267.48 ms. Allocated memory was 237.0 MB in the beginning and 415.2 MB in the end (delta: 178.3 MB). Free memory was 177.9 MB in the beginning and 367.9 MB in the end (delta: -190.0 MB). Peak memory consumption was 266.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:51:19,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 801.96 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 172.2 MB in the end (delta: -71.5 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.53 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 166.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1319.14 ms. Allocated memory was 205.5 MB in the beginning and 237.0 MB in the end (delta: 31.5 MB). Free memory was 166.9 MB in the beginning and 177.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12267.48 ms. Allocated memory was 237.0 MB in the beginning and 415.2 MB in the end (delta: 178.3 MB). Free memory was 177.9 MB in the beginning and 367.9 MB in the end (delta: -190.0 MB). Peak memory consumption was 266.7 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: 9.8s, 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, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s 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: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 821 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s 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...