/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 enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/mono-crafted_12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:35:27,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:35:27,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:35:27,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:35:27,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:35:27,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:35:27,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:35:27,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:35:27,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:35:27,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:35:27,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:35:27,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:35:27,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:35:27,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:35:27,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:35:27,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:35:27,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:35:27,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:35:27,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:35:27,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:35:27,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:35:27,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:35:27,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:35:27,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:35:27,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:35:27,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:35:27,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:35:27,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:35:27,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:35:27,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:35:27,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:35:27,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:35:27,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:35:27,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:35:27,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:35:27,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:35:27,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:35:27,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:35:27,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:35:27,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:35:27,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:35:27,512 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 19:35:27,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:35:27,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:35:27,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:35:27,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:35:27,541 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:35:27,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:35:27,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:35:27,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:35:27,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:35:27,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:35:27,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:35:27,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:35:27,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:35:27,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:35:27,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:35:27,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:35:27,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:35:27,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:35:27,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:35:27,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:35:27,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:35:27,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:35:27,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:35:27,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:35:27,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:35:27,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:35:27,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:35:27,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:35:27,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:35:27,546 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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:35:28,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:35:28,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:35:28,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:35:28,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:35:28,041 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:35:28,042 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2020-09-24 19:35:28,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f53937d5e/42854fdbbdfd485097ae1f46e8b9bc6b/FLAG13e3b4a86 [2020-09-24 19:35:28,648 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:35:28,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2020-09-24 19:35:28,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f53937d5e/42854fdbbdfd485097ae1f46e8b9bc6b/FLAG13e3b4a86 [2020-09-24 19:35:28,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f53937d5e/42854fdbbdfd485097ae1f46e8b9bc6b [2020-09-24 19:35:28,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:35:28,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:35:28,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:28,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:35:28,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:35:28,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:28" (1/1) ... [2020-09-24 19:35:28,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582ac9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:28, skipping insertion in model container [2020-09-24 19:35:28,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:28" (1/1) ... [2020-09-24 19:35:29,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:35:29,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:35:29,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:29,341 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:35:29,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:29,376 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:35:29,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29 WrapperNode [2020-09-24 19:35:29,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:29,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:35:29,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:35:29,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:35:29,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (1/1) ... [2020-09-24 19:35:29,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (1/1) ... [2020-09-24 19:35:29,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (1/1) ... [2020-09-24 19:35:29,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (1/1) ... [2020-09-24 19:35:29,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (1/1) ... [2020-09-24 19:35:29,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (1/1) ... [2020-09-24 19:35:29,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (1/1) ... [2020-09-24 19:35:29,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:35:29,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:35:29,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:35:29,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:35:29,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (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 19:35:29,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:35:29,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:35:29,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:35:29,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:35:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:35:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:35:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:35:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:35:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:35:29,766 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:35:29,766 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:35:29,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:29 BoogieIcfgContainer [2020-09-24 19:35:29,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:35:29,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:35:29,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:35:29,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:35:29,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:35:28" (1/3) ... [2020-09-24 19:35:29,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463d7338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:29, skipping insertion in model container [2020-09-24 19:35:29,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:29" (2/3) ... [2020-09-24 19:35:29,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463d7338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:29, skipping insertion in model container [2020-09-24 19:35:29,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:29" (3/3) ... [2020-09-24 19:35:29,781 INFO L109 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2020-09-24 19:35:29,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:35:29,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:35:29,849 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:35:29,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:35:29,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:35:29,905 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:35:29,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:35:29,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:35:29,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:35:29,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:35:29,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:35:29,928 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-24 19:35:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 19:35:29,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:29,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:29,936 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -103545344, now seen corresponding path program 1 times [2020-09-24 19:35:29,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:29,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771282603] [2020-09-24 19:35:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:30,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:30,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:30,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:35:30,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-24 19:35:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:35:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:30,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:35:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:30,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:30,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:30,352 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 19:35:30,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771282603] [2020-09-24 19:35:30,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:30,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 19:35:30,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496285833] [2020-09-24 19:35:30,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 19:35:30,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:30,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 19:35:30,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 19:35:30,385 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-09-24 19:35:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:30,416 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-09-24 19:35:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 19:35:30,418 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-24 19:35:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:30,429 INFO L225 Difference]: With dead ends: 37 [2020-09-24 19:35:30,430 INFO L226 Difference]: Without dead ends: 18 [2020-09-24 19:35:30,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 19:35:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-24 19:35:30,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-24 19:35:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-24 19:35:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-09-24 19:35:30,485 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2020-09-24 19:35:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:30,485 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-09-24 19:35:30,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 19:35:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-09-24 19:35:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 19:35:30,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:30,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:30,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:35:30,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash -116474638, now seen corresponding path program 1 times [2020-09-24 19:35:30,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:30,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370638284] [2020-09-24 19:35:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:30,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:30,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:30,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:35:30,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:30,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-24 19:35:30,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:35:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:35:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:35:30,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:30,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:30,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:30,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:30,950 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 19:35:30,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370638284] [2020-09-24 19:35:30,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:30,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:35:30,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580125203] [2020-09-24 19:35:30,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:35:30,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:30,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:35:30,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:35:30,955 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-09-24 19:35:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:31,045 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-09-24 19:35:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:35:31,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-24 19:35:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:31,048 INFO L225 Difference]: With dead ends: 33 [2020-09-24 19:35:31,048 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 19:35:31,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:35:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 19:35:31,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-24 19:35:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-24 19:35:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-09-24 19:35:31,061 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2020-09-24 19:35:31,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:31,061 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-09-24 19:35:31,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:35:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-09-24 19:35:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 19:35:31,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:31,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:31,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:35:31,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash -992023844, now seen corresponding path program 1 times [2020-09-24 19:35:31,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:31,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306772531] [2020-09-24 19:35:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:31,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 19:35:31,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:35:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-24 19:35:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:35:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 19:35:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:31,822 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2020-09-24 19:35:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:31,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:31,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:35:31,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306772531] [2020-09-24 19:35:31,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:31,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:35:31,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654047453] [2020-09-24 19:35:31,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:35:31,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:31,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:35:31,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:35:31,859 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-09-24 19:35:31,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:31,894 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-09-24 19:35:31,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:35:31,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 19:35:31,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:31,896 INFO L225 Difference]: With dead ends: 20 [2020-09-24 19:35:31,896 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:35:31,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:35:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:35:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:35:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:35:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:35:31,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-24 19:35:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:31,898 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:35:31,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:35:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:35:31,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:35:31,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:35:31,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:35:31,955 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 19:35:31,955 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:35:31,955 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:35:31,955 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:35:31,956 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:35:31,956 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:35:31,956 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 15) no Hoare annotation was computed. [2020-09-24 19:35:31,956 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 19:35:31,956 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 15) no Hoare annotation was computed. [2020-09-24 19:35:31,957 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 19:35:31,957 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-24 19:35:31,957 INFO L268 CegarLoopResult]: For program point L9(lines 9 10) no Hoare annotation was computed. [2020-09-24 19:35:31,957 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 19:35:31,957 INFO L268 CegarLoopResult]: For program point L9-2(lines 9 10) no Hoare annotation was computed. [2020-09-24 19:35:31,957 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 15) the Hoare annotation is: true [2020-09-24 19:35:31,958 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 19:35:31,958 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 19:35:31,958 INFO L264 CegarLoopResult]: At program point L8-2(lines 8 12) the Hoare annotation is: (and (<= main_~z~0 (let ((.cse0 (div main_~z~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ main_~z~0 (* .cse0 (- 2))) 4294967296))))) (<= 0 main_~z~0)) [2020-09-24 19:35:31,958 INFO L264 CegarLoopResult]: At program point L8-3(lines 8 12) the Hoare annotation is: (and (<= main_~z~0 (let ((.cse0 (div main_~z~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ main_~z~0 (* .cse0 (- 2))) 4294967296))))) (<= 0 main_~z~0)) [2020-09-24 19:35:31,959 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-24 19:35:31,959 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-24 19:35:31,959 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-24 19:35:31,959 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-24 19:35:31,959 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-24 19:35:31,959 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-24 19:35:31,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:35:31 BoogieIcfgContainer [2020-09-24 19:35:31,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:35:31,986 INFO L168 Benchmark]: Toolchain (without parser) took 3005.74 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 103.9 MB in the beginning and 159.2 MB in the end (delta: -55.3 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:31,987 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-24 19:35:31,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.39 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:31,989 INFO L168 Benchmark]: Boogie Preprocessor took 114.23 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 93.5 MB in the beginning and 181.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:31,990 INFO L168 Benchmark]: RCFGBuilder took 279.28 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 169.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:31,991 INFO L168 Benchmark]: TraceAbstraction took 2210.76 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 169.4 MB in the beginning and 159.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:31,996 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 391.39 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.23 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 93.5 MB in the beginning and 181.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.28 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 169.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2210.76 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 169.4 MB in the beginning and 159.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 8]: Loop Invariant Derived loop invariant: z <= 2 * (z / 2) + 4294967296 * ((z + z / 2 * -2) / 4294967296) && 0 <= z - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 10 SDslu, 56 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 51 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 3498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...