/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:37:09,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:37:09,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:37:09,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:37:09,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:37:09,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:37:09,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:37:09,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:37:09,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:37:09,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:37:09,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:37:09,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:37:09,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:37:09,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:37:09,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:37:09,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:37:09,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:37:09,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:37:09,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:37:09,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:37:09,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:37:09,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:37:09,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:37:09,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:37:09,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:37:10,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:37:10,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:37:10,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:37:10,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:37:10,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:37:10,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:37:10,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:37:10,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:37:10,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:37:10,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:37:10,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:37:10,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:37:10,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:37:10,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:37:10,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:37:10,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:37:10,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:37:10,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:37:10,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:37:10,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:37:10,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:37:10,049 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:37:10,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:37:10,049 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:37:10,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:37:10,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:37:10,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:37:10,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:37:10,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:37:10,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:37:10,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:37:10,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:37:10,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:37:10,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:37:10,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:37:10,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:37:10,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:37:10,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:37:10,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:37:10,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:37:10,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:37:10,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:37:10,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:37:10,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:10,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:37:10,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:37:10,055 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:37:10,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:37:10,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:37:10,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:37:10,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:37:10,360 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:37:10,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-07-20 11:37:10,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5939a44ad/48dc1f70ef70496182fb14247615f8c6/FLAG2f06c77b7 [2020-07-20 11:37:11,004 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:37:11,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-07-20 11:37:11,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5939a44ad/48dc1f70ef70496182fb14247615f8c6/FLAG2f06c77b7 [2020-07-20 11:37:11,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5939a44ad/48dc1f70ef70496182fb14247615f8c6 [2020-07-20 11:37:11,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:37:11,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:37:11,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:37:11,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:37:11,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:37:11,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:11,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c60ed20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11, skipping insertion in model container [2020-07-20 11:37:11,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:11,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:37:11,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:37:11,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:37:11,747 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:37:11,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:37:11,963 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:37:11,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11 WrapperNode [2020-07-20 11:37:11,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:37:11,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:37:11,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:37:11,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:37:11,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:11,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:11,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:11,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:12,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:12,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:12,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (1/1) ... [2020-07-20 11:37:12,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:37:12,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:37:12,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:37:12,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:37:12,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:37:12,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:37:12,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:37:12,165 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 11:37:12,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:37:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 11:37:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:37:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:37:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:37:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:37:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:37:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:37:13,350 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:37:13,350 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:37:13,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:37:13 BoogieIcfgContainer [2020-07-20 11:37:13,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:37:13,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:37:13,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:37:13,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:37:13,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:37:11" (1/3) ... [2020-07-20 11:37:13,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d61a370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:37:13, skipping insertion in model container [2020-07-20 11:37:13,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:37:11" (2/3) ... [2020-07-20 11:37:13,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d61a370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:37:13, skipping insertion in model container [2020-07-20 11:37:13,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:37:13" (3/3) ... [2020-07-20 11:37:13,365 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-07-20 11:37:13,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:37:13,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:37:13,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:37:13,425 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:37:13,425 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:37:13,425 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:37:13,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:37:13,426 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:37:13,426 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:37:13,426 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:37:13,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:37:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 11:37:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:37:13,461 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:37:13,462 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] [2020-07-20 11:37:13,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:37:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:37:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1307500665, now seen corresponding path program 1 times [2020-07-20 11:37:13,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:37:13,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825763898] [2020-07-20 11:37:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:37:13,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:37:13,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:37:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:37:13,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:37:13,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825763898] [2020-07-20 11:37:13,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:37:13,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:37:13,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179991705] [2020-07-20 11:37:13,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:37:13,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:37:13,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:37:13,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:37:13,695 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 11:37:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:37:14,789 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 11:37:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:37:14,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-20 11:37:14,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:37:14,819 INFO L225 Difference]: With dead ends: 586 [2020-07-20 11:37:14,819 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 11:37:14,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:37:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 11:37:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 11:37:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 11:37:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 11:37:14,904 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 30 [2020-07-20 11:37:14,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:37:14,904 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 11:37:14,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:37:14,905 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 11:37:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-20 11:37:14,910 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:37:14,910 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] [2020-07-20 11:37:15,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:15,126 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:37:15,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:37:15,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1592388862, now seen corresponding path program 1 times [2020-07-20 11:37:15,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:37:15,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563839004] [2020-07-20 11:37:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:37:15,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:37:15,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:37:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:37:15,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:37:15,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563839004] [2020-07-20 11:37:15,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:37:15,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:37:15,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751139989] [2020-07-20 11:37:15,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:37:15,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:37:15,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:37:15,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:37:15,250 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-20 11:37:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:37:16,297 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-20 11:37:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:37:16,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-07-20 11:37:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:37:16,303 INFO L225 Difference]: With dead ends: 890 [2020-07-20 11:37:16,303 INFO L226 Difference]: Without dead ends: 602 [2020-07-20 11:37:16,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:37:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-20 11:37:16,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-20 11:37:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-20 11:37:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-20 11:37:16,353 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 104 [2020-07-20 11:37:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:37:16,354 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-20 11:37:16,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:37:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-20 11:37:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-20 11:37:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:37:16,359 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] [2020-07-20 11:37:16,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:16,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:37:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:37:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2136138939, now seen corresponding path program 1 times [2020-07-20 11:37:16,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:37:16,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594179355] [2020-07-20 11:37:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:37:16,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:37:16,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:37:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:37:16,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:37:16,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594179355] [2020-07-20 11:37:16,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:37:16,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:37:16,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663472341] [2020-07-20 11:37:16,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:37:16,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:37:16,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:37:16,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:37:16,711 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-20 11:37:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:37:17,411 INFO L93 Difference]: Finished difference Result 1025 states and 1394 transitions. [2020-07-20 11:37:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:37:17,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-07-20 11:37:17,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:37:17,421 INFO L225 Difference]: With dead ends: 1025 [2020-07-20 11:37:17,421 INFO L226 Difference]: Without dead ends: 1023 [2020-07-20 11:37:17,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:37:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-07-20 11:37:17,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2020-07-20 11:37:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-07-20 11:37:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1392 transitions. [2020-07-20 11:37:17,469 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1392 transitions. Word has length 109 [2020-07-20 11:37:17,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:37:17,469 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1392 transitions. [2020-07-20 11:37:17,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:37:17,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1392 transitions. [2020-07-20 11:37:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-20 11:37:17,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:37:17,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:37:17,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:17,688 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:37:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:37:17,689 INFO L82 PathProgramCache]: Analyzing trace with hash -831400030, now seen corresponding path program 1 times [2020-07-20 11:37:17,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:37:17,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172510766] [2020-07-20 11:37:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:37:17,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:37:17,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:37:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:37:17,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:37:17,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172510766] [2020-07-20 11:37:17,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:37:17,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:37:17,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594948995] [2020-07-20 11:37:17,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:37:17,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:37:17,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:37:17,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:37:17,859 INFO L87 Difference]: Start difference. First operand 1023 states and 1392 transitions. Second operand 5 states. [2020-07-20 11:37:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:37:18,908 INFO L93 Difference]: Finished difference Result 2650 states and 3703 transitions. [2020-07-20 11:37:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:37:18,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-07-20 11:37:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:37:18,922 INFO L225 Difference]: With dead ends: 2650 [2020-07-20 11:37:18,922 INFO L226 Difference]: Without dead ends: 1633 [2020-07-20 11:37:18,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:37:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-07-20 11:37:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1470. [2020-07-20 11:37:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-20 11:37:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1920 transitions. [2020-07-20 11:37:18,985 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1920 transitions. Word has length 152 [2020-07-20 11:37:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:37:18,986 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1920 transitions. [2020-07-20 11:37:18,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:37:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1920 transitions. [2020-07-20 11:37:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-07-20 11:37:18,992 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:37:18,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:37:19,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:19,209 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:37:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:37:19,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1765771600, now seen corresponding path program 1 times [2020-07-20 11:37:19,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:37:19,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160037326] [2020-07-20 11:37:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:37:19,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:37:19,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:37:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:37:19,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:37:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:37:19,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160037326] [2020-07-20 11:37:19,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:37:19,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 11:37:19,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291906461] [2020-07-20 11:37:19,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:37:19,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:37:19,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:37:19,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:37:19,554 INFO L87 Difference]: Start difference. First operand 1470 states and 1920 transitions. Second operand 7 states. [2020-07-20 11:37:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:37:20,907 INFO L93 Difference]: Finished difference Result 3816 states and 5119 transitions. [2020-07-20 11:37:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 11:37:20,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-07-20 11:37:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:37:20,930 INFO L225 Difference]: With dead ends: 3816 [2020-07-20 11:37:20,930 INFO L226 Difference]: Without dead ends: 2352 [2020-07-20 11:37:20,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:37:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2020-07-20 11:37:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2201. [2020-07-20 11:37:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2201 states. [2020-07-20 11:37:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 2782 transitions. [2020-07-20 11:37:21,021 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 2782 transitions. Word has length 191 [2020-07-20 11:37:21,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:37:21,022 INFO L479 AbstractCegarLoop]: Abstraction has 2201 states and 2782 transitions. [2020-07-20 11:37:21,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:37:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 2782 transitions. [2020-07-20 11:37:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-07-20 11:37:21,028 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:37:21,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:37:21,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:21,236 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:37:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:37:21,236 INFO L82 PathProgramCache]: Analyzing trace with hash -439866795, now seen corresponding path program 1 times [2020-07-20 11:37:21,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:37:21,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425393374] [2020-07-20 11:37:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:37:21,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:37:21,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:37:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:37:21,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:37:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:37:21,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425393374] [2020-07-20 11:37:21,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:37:21,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:37:21,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393459278] [2020-07-20 11:37:21,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:37:21,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:37:21,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:37:21,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:37:21,534 INFO L87 Difference]: Start difference. First operand 2201 states and 2782 transitions. Second operand 6 states. [2020-07-20 11:37:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:37:22,593 INFO L93 Difference]: Finished difference Result 4849 states and 6224 transitions. [2020-07-20 11:37:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:37:22,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2020-07-20 11:37:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:37:22,624 INFO L225 Difference]: With dead ends: 4849 [2020-07-20 11:37:22,624 INFO L226 Difference]: Without dead ends: 2654 [2020-07-20 11:37:22,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 390 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:37:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2020-07-20 11:37:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2646. [2020-07-20 11:37:22,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-07-20 11:37:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3363 transitions. [2020-07-20 11:37:22,761 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3363 transitions. Word has length 198 [2020-07-20 11:37:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:37:22,762 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 3363 transitions. [2020-07-20 11:37:22,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:37:22,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3363 transitions. [2020-07-20 11:37:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-20 11:37:22,770 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:37:22,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:37:22,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:22,985 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:37:22,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:37:22,985 INFO L82 PathProgramCache]: Analyzing trace with hash -674244364, now seen corresponding path program 1 times [2020-07-20 11:37:22,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:37:22,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720441127] [2020-07-20 11:37:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:37:23,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:37:23,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:37:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 11:37:23,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:37:23,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720441127] [2020-07-20 11:37:23,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:37:23,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:37:23,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164291160] [2020-07-20 11:37:23,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:37:23,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:37:23,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:37:23,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:37:23,129 INFO L87 Difference]: Start difference. First operand 2646 states and 3363 transitions. Second operand 3 states. [2020-07-20 11:37:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:37:23,738 INFO L93 Difference]: Finished difference Result 5286 states and 6729 transitions. [2020-07-20 11:37:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:37:23,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-07-20 11:37:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:37:23,756 INFO L225 Difference]: With dead ends: 5286 [2020-07-20 11:37:23,756 INFO L226 Difference]: Without dead ends: 2646 [2020-07-20 11:37:23,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:37:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2020-07-20 11:37:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2215. [2020-07-20 11:37:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-07-20 11:37:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2632 transitions. [2020-07-20 11:37:23,828 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2632 transitions. Word has length 205 [2020-07-20 11:37:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:37:23,828 INFO L479 AbstractCegarLoop]: Abstraction has 2215 states and 2632 transitions. [2020-07-20 11:37:23,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:37:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2632 transitions. [2020-07-20 11:37:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-07-20 11:37:23,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:37:23,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 11:37:24,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:24,048 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:37:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:37:24,048 INFO L82 PathProgramCache]: Analyzing trace with hash 29112225, now seen corresponding path program 1 times [2020-07-20 11:37:24,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:37:24,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327218502] [2020-07-20 11:37:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:37:24,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:37:24,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:37:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-07-20 11:37:24,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:37:24,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327218502] [2020-07-20 11:37:24,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:37:24,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:37:24,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365883200] [2020-07-20 11:37:24,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:37:24,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:37:24,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:37:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:37:24,198 INFO L87 Difference]: Start difference. First operand 2215 states and 2632 transitions. Second operand 3 states. [2020-07-20 11:37:24,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:37:24,816 INFO L93 Difference]: Finished difference Result 2646 states and 3150 transitions. [2020-07-20 11:37:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:37:24,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-07-20 11:37:24,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:37:24,818 INFO L225 Difference]: With dead ends: 2646 [2020-07-20 11:37:24,818 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:37:24,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:37:24,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:37:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:37:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:37:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:37:24,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2020-07-20 11:37:24,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:37:24,824 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:37:24,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:37:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:37:24,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:37:25,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:37:25,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:37:25,931 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-07-20 11:37:26,140 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-07-20 11:37:26,305 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-07-20 11:37:26,311 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:37:26,311 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|)) [2020-07-20 11:37:26,311 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:37:26,312 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 11:37:26,312 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,312 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,312 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,312 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,312 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,312 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,313 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 11:37:26,313 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 11:37:26,313 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 11:37:26,313 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 11:37:26,313 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 11:37:26,313 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 11:37:26,313 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 11:37:26,313 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 11:37:26,314 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 11:37:26,314 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 11:37:26,315 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 11:37:26,315 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,315 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,315 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,316 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,317 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,317 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 11:37:26,317 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 11:37:26,317 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 11:37:26,317 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 11:37:26,317 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 11:37:26,317 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 11:37:26,318 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 11:37:26,318 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 11:37:26,318 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 11:37:26,318 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 11:37:26,318 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 11:37:26,324 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 11:37:26,324 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 11:37:26,325 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2020-07-20 11:37:26,325 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 11:37:26,325 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,325 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,325 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,325 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,326 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,326 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 11:37:26,326 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 11:37:26,326 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 11:37:26,326 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 11:37:26,326 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 11:37:26,326 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 11:37:26,326 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 11:37:26,327 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 11:37:26,327 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 11:37:26,327 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 11:37:26,327 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,329 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,330 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,330 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,330 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,330 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 11:37:26,330 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 11:37:26,330 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 11:37:26,331 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 11:37:26,332 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 11:37:26,332 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,332 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,332 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,332 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,335 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,335 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 11:37:26,335 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 11:37:26,335 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 11:37:26,335 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 11:37:26,335 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 11:37:26,336 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 11:37:26,336 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 11:37:26,336 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 11:37:26,336 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 11:37:26,336 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,336 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,336 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,336 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,337 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,337 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,337 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,337 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 11:37:26,337 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 11:37:26,337 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 11:37:26,337 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 11:37:26,338 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 11:37:26,338 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 11:37:26,338 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 11:37:26,338 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 11:37:26,338 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 11:37:26,338 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 11:37:26,338 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 11:37:26,338 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 11:37:26,339 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 11:37:26,339 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,339 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,339 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,340 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,341 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 11:37:26,341 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,341 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,341 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 11:37:26,341 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 11:37:26,341 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 11:37:26,341 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 11:37:26,341 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 11:37:26,342 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 11:37:26,342 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 11:37:26,342 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 11:37:26,342 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 11:37:26,342 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 11:37:26,343 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 11:37:26,343 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 11:37:26,343 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 11:37:26,343 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,343 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,343 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,344 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,344 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,344 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,344 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 11:37:26,344 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 11:37:26,344 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 11:37:26,344 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 11:37:26,344 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 11:37:26,345 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 11:37:26,345 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 11:37:26,345 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 11:37:26,345 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 11:37:26,345 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 11:37:26,345 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 11:37:26,347 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (<= |old(~a1~0)| 23))) (.cse9 (<= ~a1~0 23)) (.cse6 (<= 2 ~a10~0)) (.cse12 (<= 8 ~a19~0)) (.cse10 (not (<= 8 |old(~a19~0)|))) (.cse7 (not (< |old(~a10~0)| 4))) (.cse3 (not (<= |old(~a19~0)| 9))) (.cse8 (not (<= 2 |old(~a10~0)|))) (.cse4 (<= ~a10~0 |old(~a10~0)|)) (.cse1 (<= 7 ~a19~0)) (.cse5 (<= ~a19~0 |old(~a19~0)|)) (.cse2 (not (<= 7 |old(~a19~0)|))) (.cse11 (not (<= |old(~a10~0)| 1)))) (and (or .cse0 .cse1 .cse2 .cse3) (or (and .cse4 .cse5 .cse6) .cse7 .cse3 .cse8) (or .cse0 .cse9 .cse10 .cse11) (or (and .cse4 .cse9 .cse5) .cse0 (not (<= |old(~a10~0)| 0))) (or (and .cse4 .cse12 .cse5 .cse6) .cse10 .cse3 .cse8) (or .cse0 (and .cse4 .cse9 .cse5 .cse6) .cse3 .cse8) (or .cse12 .cse10 .cse11) (or .cse1 .cse2 .cse7 .cse3 .cse8) (or (and .cse4 .cse1 .cse5) .cse2 .cse11))) [2020-07-20 11:37:26,347 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 11:37:26,348 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 11:37:26,348 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 11:37:26,348 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,348 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,348 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,348 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,348 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,349 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,349 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 11:37:26,350 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 11:37:26,350 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 11:37:26,351 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 11:37:26,351 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 11:37:26,351 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 11:37:26,351 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 11:37:26,351 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 11:37:26,351 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 11:37:26,351 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 11:37:26,351 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,352 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 11:37:26,353 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:37:26,354 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 11:37:26,355 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 11:37:26,356 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 11:37:26,356 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 11:37:26,356 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:37:26,356 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 8 ~a19~0) (<= ~a1~0 23)) [2020-07-20 11:37:26,356 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:37:26,356 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:37:26,356 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (and (<= ~a10~0 |old(~a10~0)|) (<= 8 ~a19~0) (<= ~a1~0 23) (<= ~a19~0 |old(~a19~0)|)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 8 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-20 11:37:26,357 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 11:37:26,357 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a1~0 23)) (.cse1 (<= ~a19~0 9)) (.cse2 (<= 2 ~a10~0))) (or (and (<= ~a10~0 1) (<= 7 ~a19~0)) (not (<= |old(~a1~0)| 23)) (and (<= ~a10~0 0) .cse0) (not (<= |old(~a10~0)| 0)) (not (<= 8 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse1 .cse0 .cse2) (and .cse1 (<= 8 ~a19~0)) (and .cse1 .cse2 (< ~a10~0 4)))) [2020-07-20 11:37:26,357 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 11:37:26,357 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 11:37:26,357 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a1~0 23)) (.cse1 (<= ~a19~0 9)) (.cse2 (<= 2 ~a10~0))) (or (and (<= ~a10~0 1) (<= 7 ~a19~0)) (not (<= |old(~a1~0)| 23)) (and (<= ~a10~0 0) .cse0) (not (<= |old(~a10~0)| 0)) (not (<= 8 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse1 .cse0 .cse2) (and .cse1 (<= 8 ~a19~0)) (and .cse1 .cse2 (< ~a10~0 4)))) [2020-07-20 11:37:26,357 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 11:37:26,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:37:26 BoogieIcfgContainer [2020-07-20 11:37:26,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:37:26,385 INFO L168 Benchmark]: Toolchain (without parser) took 15096.76 ms. Allocated memory was 139.5 MB in the beginning and 400.6 MB in the end (delta: 261.1 MB). Free memory was 102.7 MB in the beginning and 311.9 MB in the end (delta: -209.3 MB). Peak memory consumption was 275.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:37:26,386 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 11:37:26,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.72 ms. Allocated memory was 139.5 MB in the beginning and 206.0 MB in the end (delta: 66.6 MB). Free memory was 102.5 MB in the beginning and 172.3 MB in the end (delta: -69.8 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:37:26,393 INFO L168 Benchmark]: Boogie Preprocessor took 108.42 ms. Allocated memory is still 206.0 MB. Free memory was 172.3 MB in the beginning and 168.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:37:26,394 INFO L168 Benchmark]: RCFGBuilder took 1283.27 ms. Allocated memory was 206.0 MB in the beginning and 238.0 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 181.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:37:26,395 INFO L168 Benchmark]: TraceAbstraction took 13024.42 ms. Allocated memory was 238.0 MB in the beginning and 400.6 MB in the end (delta: 162.5 MB). Free memory was 179.6 MB in the beginning and 311.9 MB in the end (delta: -132.3 MB). Peak memory consumption was 253.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:37:26,406 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.72 ms. Allocated memory was 139.5 MB in the beginning and 206.0 MB in the end (delta: 66.6 MB). Free memory was 102.5 MB in the beginning and 172.3 MB in the end (delta: -69.8 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.42 ms. Allocated memory is still 206.0 MB. Free memory was 172.3 MB in the beginning and 168.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1283.27 ms. Allocated memory was 206.0 MB in the beginning and 238.0 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 181.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13024.42 ms. Allocated memory was 238.0 MB in the beginning and 400.6 MB in the end (delta: 162.5 MB). Free memory was 179.6 MB in the beginning and 311.9 MB in the end (delta: -132.3 MB). Peak memory consumption was 253.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: ((((((((a10 <= 1 && 7 <= a19) || !(\old(a1) <= 23)) || (a10 <= 0 && a1 <= 23)) || !(\old(a10) <= 0)) || !(8 <= \old(a19))) || !(\old(a19) <= 9)) || ((a19 <= 9 && a1 <= 23) && 2 <= a10)) || (a19 <= 9 && 8 <= a19)) || ((a19 <= 9 && 2 <= a10) && a10 < 4) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.6s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 376 SDtfs, 2319 SDslu, 193 SDs, 0 SdLazy, 4098 SolverSat, 1005 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1595 GetRequests, 1559 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2646occurred 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, 8 MinimizatonAttempts, 765 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 77 PreInvPairs, 113 NumberOfFragments, 345 HoareAnnotationTreeSize, 77 FomulaSimplifications, 1772 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1484 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1197 NumberOfCodeBlocks, 1197 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1576 ConstructedInterpolants, 0 QuantifiedInterpolants, 635260 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2406 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 794/802 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...