/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:12:05,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:12:05,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:12:05,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:12:05,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:12:05,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:12:05,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:12:05,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:12:05,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:12:05,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:12:05,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:12:05,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:12:05,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:12:05,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:12:05,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:12:05,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:12:05,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:12:05,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:12:05,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:12:05,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:12:05,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:12:05,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:12:05,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:12:05,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:12:05,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:12:05,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:12:05,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:12:05,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:12:05,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:12:05,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:12:05,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:12:05,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:12:05,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:12:05,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:12:05,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:12:05,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:12:05,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:12:05,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:12:05,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:12:05,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:12:05,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:12:05,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:12:05,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:12:05,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:12:05,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:12:05,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:12:05,501 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:12:05,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:12:05,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:12:05,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:12:05,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:12:05,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:12:05,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:12:05,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:12:05,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:12:05,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:12:05,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:12:05,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:12:05,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:12:05,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:12:05,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:12:05,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:12:05,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:12:05,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:12:05,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:12:05,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:12:05,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:12:05,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:12:05,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:12:05,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:12:05,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:12:05,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:12:05,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:12:05,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:12:05,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:12:05,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:12:05,987 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:12:05,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-24 16:12:06,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35dff1673/ce73334e998f42ecafab1c61b3ab44bb/FLAGbaf888b71 [2020-09-24 16:12:06,644 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:12:06,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-24 16:12:06,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35dff1673/ce73334e998f42ecafab1c61b3ab44bb/FLAGbaf888b71 [2020-09-24 16:12:07,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35dff1673/ce73334e998f42ecafab1c61b3ab44bb [2020-09-24 16:12:07,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:12:07,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:12:07,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:12:07,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:12:07,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:12:07,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07, skipping insertion in model container [2020-09-24 16:12:07,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:12:07,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:12:07,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:12:07,317 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:12:07,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:12:07,350 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:12:07,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07 WrapperNode [2020-09-24 16:12:07,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:12:07,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:12:07,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:12:07,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:12:07,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (1/1) ... [2020-09-24 16:12:07,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:12:07,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:12:07,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:12:07,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:12:07,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:12:07,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:12:07,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:12:07,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:12:07,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:12:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:12:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:12:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:12:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:12:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:12:07,867 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:12:07,867 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:12:07,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:12:07 BoogieIcfgContainer [2020-09-24 16:12:07,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:12:07,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:12:07,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:12:07,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:12:07,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:12:07" (1/3) ... [2020-09-24 16:12:07,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b39f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:12:07, skipping insertion in model container [2020-09-24 16:12:07,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:07" (2/3) ... [2020-09-24 16:12:07,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b39f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:12:07, skipping insertion in model container [2020-09-24 16:12:07,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:12:07" (3/3) ... [2020-09-24 16:12:07,895 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-09-24 16:12:07,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:12:07,915 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:12:07,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:12:07,966 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:12:07,966 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:12:07,966 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:12:07,966 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:12:07,967 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:12:07,967 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:12:07,967 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:12:07,967 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:12:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-24 16:12:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 16:12:07,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:07,997 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] [2020-09-24 16:12:07,998 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:08,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1562147583, now seen corresponding path program 1 times [2020-09-24 16:12:08,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:08,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517907074] [2020-09-24 16:12:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:08,181 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:08,181 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:08,181 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:08,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 16:12:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 16:12:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:12:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:08,339 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:08,339 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:08,339 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:08,339 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:08,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:08,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:08,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:08,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517907074] [2020-09-24 16:12:08,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:12:08,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:12:08,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557244405] [2020-09-24 16:12:08,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:12:08,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:08,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:12:08,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:12:08,379 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-09-24 16:12:08,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:08,455 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2020-09-24 16:12:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:12:08,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-24 16:12:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:08,468 INFO L225 Difference]: With dead ends: 105 [2020-09-24 16:12:08,469 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 16:12:08,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:12:08,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 16:12:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-09-24 16:12:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 16:12:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 16:12:08,518 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2020-09-24 16:12:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:08,519 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 16:12:08,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:12:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 16:12:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 16:12:08,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:08,521 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] [2020-09-24 16:12:08,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:12:08,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:08,522 INFO L82 PathProgramCache]: Analyzing trace with hash 42061886, now seen corresponding path program 1 times [2020-09-24 16:12:08,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:08,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723055219] [2020-09-24 16:12:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:08,569 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:08,570 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:08,570 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:08,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:08,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:12:08,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:08,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 16:12:08,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:08,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:12:08,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:08,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:12:08,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:08,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:08,685 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:08,685 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:08,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:08,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:08,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:08,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:08,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:08,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723055219] [2020-09-24 16:12:08,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:08,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 16:12:08,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640858077] [2020-09-24 16:12:08,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:12:08,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:08,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:12:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:12:08,699 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-24 16:12:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:08,778 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2020-09-24 16:12:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:12:08,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 16:12:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:08,781 INFO L225 Difference]: With dead ends: 97 [2020-09-24 16:12:08,781 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 16:12:08,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:12:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 16:12:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2020-09-24 16:12:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 16:12:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-09-24 16:12:08,792 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 27 [2020-09-24 16:12:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:08,792 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-09-24 16:12:08,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:12:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-09-24 16:12:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 16:12:08,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:08,794 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:08,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:12:08,795 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:08,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2023869189, now seen corresponding path program 2 times [2020-09-24 16:12:08,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:08,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891309029] [2020-09-24 16:12:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:08,887 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:08,887 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:08,888 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:08,888 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 16:12:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 16:12:08,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:12:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:12:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:09,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:09,066 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:09,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:09,067 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:09,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:09,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:12:09,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 16:12:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:09,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891309029] [2020-09-24 16:12:09,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:09,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 16:12:09,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076423241] [2020-09-24 16:12:09,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:12:09,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:09,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:12:09,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:12:09,088 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 7 states. [2020-09-24 16:12:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:09,246 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-09-24 16:12:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:12:09,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-09-24 16:12:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:09,248 INFO L225 Difference]: With dead ends: 105 [2020-09-24 16:12:09,248 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 16:12:09,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:12:09,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 16:12:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-24 16:12:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 16:12:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-24 16:12:09,258 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 31 [2020-09-24 16:12:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:09,259 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-24 16:12:09,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:12:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-24 16:12:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 16:12:09,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:09,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:09,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:12:09,261 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:09,262 INFO L82 PathProgramCache]: Analyzing trace with hash -909118664, now seen corresponding path program 3 times [2020-09-24 16:12:09,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:09,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589736922] [2020-09-24 16:12:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:09,334 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:09,335 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:09,335 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:09,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:09,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:12:09,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 16:12:09,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:12:09,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:09,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 16:12:09,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:09,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:09,515 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:09,515 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:09,516 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:09,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:09,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:09,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:09,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:09,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:09,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:09,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:09,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:09,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589736922] [2020-09-24 16:12:09,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:09,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:12:09,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921960127] [2020-09-24 16:12:09,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:12:09,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:09,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:12:09,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:12:09,526 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 9 states. [2020-09-24 16:12:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:09,716 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-09-24 16:12:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:12:09,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 16:12:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:09,718 INFO L225 Difference]: With dead ends: 113 [2020-09-24 16:12:09,719 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 16:12:09,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:12:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 16:12:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-09-24 16:12:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 16:12:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-24 16:12:09,728 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2020-09-24 16:12:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:09,728 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-24 16:12:09,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:12:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-24 16:12:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 16:12:09,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:09,730 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:09,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:12:09,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:09,731 INFO L82 PathProgramCache]: Analyzing trace with hash -460436747, now seen corresponding path program 4 times [2020-09-24 16:12:09,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:09,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301357448] [2020-09-24 16:12:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:09,792 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:09,792 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:09,793 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 16:12:09,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 16:12:09,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:12:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 16:12:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:09,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:09,981 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:09,981 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:09,981 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:09,982 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:09,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:09,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:09,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:09,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301357448] [2020-09-24 16:12:09,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:09,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 16:12:09,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134934526] [2020-09-24 16:12:09,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:12:09,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:09,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:12:09,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:12:09,992 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-24 16:12:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:10,253 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-09-24 16:12:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:12:10,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-09-24 16:12:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:10,255 INFO L225 Difference]: With dead ends: 121 [2020-09-24 16:12:10,256 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 16:12:10,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:12:10,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 16:12:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2020-09-24 16:12:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 16:12:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-09-24 16:12:10,265 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2020-09-24 16:12:10,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:10,265 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-09-24 16:12:10,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:12:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-09-24 16:12:10,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 16:12:10,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:10,267 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:10,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:12:10,268 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:10,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:10,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1152416818, now seen corresponding path program 5 times [2020-09-24 16:12:10,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:10,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051985683] [2020-09-24 16:12:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:10,383 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:10,383 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:10,383 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:10,383 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:10,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 16:12:10,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:10,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 16:12:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:12:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 16:12:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:10,571 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:10,571 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:10,571 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:10,572 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:10,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:10,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:10,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:10,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:10,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051985683] [2020-09-24 16:12:10,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:10,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 16:12:10,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644787255] [2020-09-24 16:12:10,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:12:10,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:12:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:12:10,581 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 13 states. [2020-09-24 16:12:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:10,890 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-09-24 16:12:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:12:10,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-09-24 16:12:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:10,892 INFO L225 Difference]: With dead ends: 129 [2020-09-24 16:12:10,892 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 16:12:10,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-09-24 16:12:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 16:12:10,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2020-09-24 16:12:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 16:12:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-24 16:12:10,903 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 43 [2020-09-24 16:12:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:10,903 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-24 16:12:10,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:12:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-24 16:12:10,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 16:12:10,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:10,905 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:10,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:12:10,906 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:10,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:10,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2041431791, now seen corresponding path program 6 times [2020-09-24 16:12:10,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:10,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561192625] [2020-09-24 16:12:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:11,000 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:11,000 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:11,000 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:11,001 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:11,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 16:12:11,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 16:12:11,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:12:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:12:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:11,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:11,245 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:11,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:11,246 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:11,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:11,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561192625] [2020-09-24 16:12:11,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:11,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 16:12:11,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827994882] [2020-09-24 16:12:11,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 16:12:11,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:11,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 16:12:11,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:12:11,267 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 15 states. [2020-09-24 16:12:11,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:11,663 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2020-09-24 16:12:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 16:12:11,664 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-24 16:12:11,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:11,665 INFO L225 Difference]: With dead ends: 137 [2020-09-24 16:12:11,665 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 16:12:11,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:12:11,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 16:12:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2020-09-24 16:12:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 16:12:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-09-24 16:12:11,686 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 47 [2020-09-24 16:12:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:11,687 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-09-24 16:12:11,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 16:12:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-09-24 16:12:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 16:12:11,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:11,688 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:11,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:12:11,689 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash 90008364, now seen corresponding path program 7 times [2020-09-24 16:12:11,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:11,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582086206] [2020-09-24 16:12:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:11,797 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:11,797 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:11,798 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 16:12:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 16:12:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:12:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 16:12:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:12,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:12,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:12,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:12,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:12,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:12,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:12,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:12,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582086206] [2020-09-24 16:12:12,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:12,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 16:12:12,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569015519] [2020-09-24 16:12:12,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 16:12:12,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:12,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 16:12:12,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:12:12,088 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 17 states. [2020-09-24 16:12:12,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:12,665 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2020-09-24 16:12:12,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 16:12:12,666 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-09-24 16:12:12,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:12,667 INFO L225 Difference]: With dead ends: 145 [2020-09-24 16:12:12,667 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 16:12:12,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2020-09-24 16:12:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 16:12:12,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2020-09-24 16:12:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 16:12:12,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 16:12:12,675 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 51 [2020-09-24 16:12:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:12,675 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 16:12:12,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 16:12:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 16:12:12,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 16:12:12,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:12,676 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:12,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:12:12,677 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:12,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:12,677 INFO L82 PathProgramCache]: Analyzing trace with hash 737585385, now seen corresponding path program 8 times [2020-09-24 16:12:12,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:12,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745739744] [2020-09-24 16:12:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:12,765 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:12,765 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:12,765 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:12,765 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:12,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 16:12:12,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 16:12:12,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:12:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:12:12,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:13,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:13,108 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:13,108 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:13,109 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:13,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:13,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:13,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:13,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745739744] [2020-09-24 16:12:13,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:13,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 16:12:13,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956244272] [2020-09-24 16:12:13,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 16:12:13,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:13,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 16:12:13,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:12:13,118 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 19 states. [2020-09-24 16:12:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:13,887 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-09-24 16:12:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 16:12:13,888 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-09-24 16:12:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:13,888 INFO L225 Difference]: With dead ends: 153 [2020-09-24 16:12:13,889 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 16:12:13,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 16:12:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 16:12:13,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-09-24 16:12:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 16:12:13,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-24 16:12:13,900 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 55 [2020-09-24 16:12:13,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:13,900 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-24 16:12:13,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 16:12:13,900 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-24 16:12:13,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 16:12:13,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:13,901 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:13,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:12:13,902 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:13,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:13,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1005535194, now seen corresponding path program 9 times [2020-09-24 16:12:13,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:13,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583860982] [2020-09-24 16:12:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:13,997 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:13,997 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:13,997 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:13,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:13,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 16:12:13,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 16:12:13,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 16:12:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 16:12:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:14,397 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:14,397 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:14,397 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:14,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:14,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:14,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:14,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:14,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583860982] [2020-09-24 16:12:14,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:14,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 16:12:14,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854294023] [2020-09-24 16:12:14,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 16:12:14,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:14,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 16:12:14,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-09-24 16:12:14,411 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 21 states. [2020-09-24 16:12:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:15,116 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2020-09-24 16:12:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 16:12:15,117 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-09-24 16:12:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:15,118 INFO L225 Difference]: With dead ends: 161 [2020-09-24 16:12:15,118 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 16:12:15,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 16:12:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 16:12:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 78. [2020-09-24 16:12:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 16:12:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-09-24 16:12:15,125 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 59 [2020-09-24 16:12:15,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:15,126 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-09-24 16:12:15,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 16:12:15,126 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-09-24 16:12:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 16:12:15,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:15,127 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:15,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:12:15,128 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:15,128 INFO L82 PathProgramCache]: Analyzing trace with hash 111341795, now seen corresponding path program 10 times [2020-09-24 16:12:15,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:15,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741395410] [2020-09-24 16:12:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:15,444 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:12:15,444 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:15,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:15,445 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:15,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 16:12:15,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-24 16:12:15,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:15,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 16:12:15,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:12:15,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 16:12:15,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:16,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:16,146 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:16,147 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:16,149 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:16,149 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:16,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:12:16,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:16,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:12:16,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:12:16,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741395410] [2020-09-24 16:12:16,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:16,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 16:12:16,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370393161] [2020-09-24 16:12:16,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 16:12:16,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:16,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 16:12:16,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 16:12:16,164 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 25 states. [2020-09-24 16:12:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:17,432 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2020-09-24 16:12:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 16:12:17,432 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2020-09-24 16:12:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:17,433 INFO L225 Difference]: With dead ends: 161 [2020-09-24 16:12:17,433 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:12:17,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 16:12:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:12:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:12:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:12:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:12:17,439 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-24 16:12:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:17,440 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:12:17,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 16:12:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:12:17,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:12:17,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:12:17,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:12:17,759 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-09-24 16:12:17,766 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:12:17,766 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:12:17,766 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:12:17,766 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:12:17,766 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:12:17,766 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:12:17,767 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-09-24 16:12:17,767 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 16:12:17,767 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-09-24 16:12:17,767 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 16:12:17,767 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-24 16:12:17,767 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-24 16:12:17,768 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 23) the Hoare annotation is: (or (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= 0 main_~v~0) (<= main_~v~0 0))) [2020-09-24 16:12:17,768 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 16:12:17,768 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-24 16:12:17,768 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:12:17,768 INFO L268 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-09-24 16:12:17,768 INFO L264 CegarLoopResult]: At program point L20-5(lines 20 23) the Hoare annotation is: (or (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= 0 main_~v~0) (<= main_~v~0 0))) [2020-09-24 16:12:17,769 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 16:12:17,769 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-24 16:12:17,769 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 16:12:17,769 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-24 16:12:17,769 INFO L268 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-09-24 16:12:17,771 INFO L264 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: (or (and (<= main_~v~0 9) (<= 9 main_~v~0)) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= main_~v~0 8) (< 0 (+ (div main_~v~0 4294967296) 1)))) [2020-09-24 16:12:17,771 INFO L264 CegarLoopResult]: At program point L21-7(line 21) the Hoare annotation is: (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) [2020-09-24 16:12:17,771 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2020-09-24 16:12:17,771 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 16:12:17,771 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-24 16:12:17,772 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-09-24 16:12:17,772 INFO L268 CegarLoopResult]: For program point L17-5(line 17) no Hoare annotation was computed. [2020-09-24 16:12:17,772 INFO L264 CegarLoopResult]: At program point L17-6(lines 17 23) the Hoare annotation is: (or (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= 0 main_~v~0) (<= main_~v~0 0))) [2020-09-24 16:12:17,772 INFO L268 CegarLoopResult]: For program point L17-7(lines 17 23) no Hoare annotation was computed. [2020-09-24 16:12:17,772 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-09-24 16:12:17,772 INFO L268 CegarLoopResult]: For program point L22(lines 20 23) no Hoare annotation was computed. [2020-09-24 16:12:17,773 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:12:17,773 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 23) no Hoare annotation was computed. [2020-09-24 16:12:17,773 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 16:12:17,773 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 16:12:17,773 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 16:12:17,773 INFO L264 CegarLoopResult]: At program point L18-6(lines 18 23) the Hoare annotation is: (or (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= 0 main_~v~0) (<= main_~v~0 0))) [2020-09-24 16:12:17,774 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-24 16:12:17,774 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-24 16:12:17,774 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 16:12:17,774 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-24 16:12:17,774 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-24 16:12:17,774 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-24 16:12:17,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:12:17 BoogieIcfgContainer [2020-09-24 16:12:17,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:12:17,803 INFO L168 Benchmark]: Toolchain (without parser) took 10780.29 ms. Allocated memory was 141.6 MB in the beginning and 315.6 MB in the end (delta: 174.1 MB). Free memory was 103.9 MB in the beginning and 219.0 MB in the end (delta: -115.1 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:17,803 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:12:17,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.62 ms. Allocated memory is still 141.6 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:17,805 INFO L168 Benchmark]: Boogie Preprocessor took 120.84 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 182.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:17,806 INFO L168 Benchmark]: RCFGBuilder took 400.09 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 168.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:17,807 INFO L168 Benchmark]: TraceAbstraction took 9917.57 ms. Allocated memory was 204.5 MB in the beginning and 315.6 MB in the end (delta: 111.1 MB). Free memory was 167.6 MB in the beginning and 219.0 MB in the end (delta: -51.4 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:17,811 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.62 ms. Allocated memory is still 141.6 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.84 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 182.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 400.09 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 168.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9917.57 ms. Allocated memory was 204.5 MB in the beginning and 315.6 MB in the end (delta: 111.1 MB). Free memory was 167.6 MB in the beginning and 219.0 MB in the end (delta: -51.4 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 17]: Loop Invariant Derived loop invariant: (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) || (0 <= v && v <= 0) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) || (0 <= v && v <= 0) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) || (0 <= v && v <= 0) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((v <= 9 && 9 <= v) || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v)) || (v <= 8 && 0 < v / 4294967296 + 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) || (0 <= v && v <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.4s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 527 SDtfs, 434 SDslu, 5358 SDs, 0 SdLazy, 2963 SolverSat, 124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 190 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 22 PreInvPairs, 42 NumberOfFragments, 182 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 95600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 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...