/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=5000 --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/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:31:19,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:31:19,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:31:19,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:31:19,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:31:19,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:31:19,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:31:19,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:31:19,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:31:19,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:31:19,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:31:19,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:31:19,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:31:19,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:31:19,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:31:19,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:31:19,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:31:19,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:31:19,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:31:19,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:31:19,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:31:19,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:31:19,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:31:19,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:31:19,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:31:19,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:31:19,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:31:19,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:31:19,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:31:19,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:31:19,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:31:19,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:31:19,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:31:19,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:31:19,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:31:19,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:31:19,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:31:19,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:31:19,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:31:19,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:31:19,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:31:19,454 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 18:31:19,482 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:31:19,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:31:19,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:31:19,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:31:19,484 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:31:19,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:31:19,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:31:19,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:31:19,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:31:19,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:31:19,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:31:19,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:31:19,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:31:19,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:31:19,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:31:19,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:31:19,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:31:19,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:31:19,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:31:19,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:31:19,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:31:19,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:31:19,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:31:19,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:31:19,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:31:19,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:31:19,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:31:19,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:31:19,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:31:19,490 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=5000;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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:31:19,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:31:20,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:31:20,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:31:20,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:31:20,016 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:31:20,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-09-24 18:31:20,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a883721/0ef1a7f929764fcb895aa08402d8b68f/FLAG16b25c650 [2020-09-24 18:31:20,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:31:20,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-09-24 18:31:20,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a883721/0ef1a7f929764fcb895aa08402d8b68f/FLAG16b25c650 [2020-09-24 18:31:20,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a883721/0ef1a7f929764fcb895aa08402d8b68f [2020-09-24 18:31:21,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:31:21,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:31:21,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:21,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:31:21,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:31:21,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:20" (1/1) ... [2020-09-24 18:31:21,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba61646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21, skipping insertion in model container [2020-09-24 18:31:21,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:20" (1/1) ... [2020-09-24 18:31:21,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:31:21,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:31:21,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:21,308 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:31:21,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:21,344 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:31:21,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21 WrapperNode [2020-09-24 18:31:21,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:21,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:31:21,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:31:21,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:31:21,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (1/1) ... [2020-09-24 18:31:21,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (1/1) ... [2020-09-24 18:31:21,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (1/1) ... [2020-09-24 18:31:21,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (1/1) ... [2020-09-24 18:31:21,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (1/1) ... [2020-09-24 18:31:21,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (1/1) ... [2020-09-24 18:31:21,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (1/1) ... [2020-09-24 18:31:21,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:31:21,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:31:21,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:31:21,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:31:21,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (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 18:31:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:31:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:31:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:31:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:31:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:31:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:31:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:31:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:31:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:31:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:31:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:31:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:31:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:31:21,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:31:21,875 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:31:21,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:21 BoogieIcfgContainer [2020-09-24 18:31:21,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:31:21,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:31:21,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:31:21,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:31:21,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:31:20" (1/3) ... [2020-09-24 18:31:21,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7924110e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:21, skipping insertion in model container [2020-09-24 18:31:21,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:21" (2/3) ... [2020-09-24 18:31:21,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7924110e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:21, skipping insertion in model container [2020-09-24 18:31:21,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:21" (3/3) ... [2020-09-24 18:31:21,902 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-09-24 18:31:21,914 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:31:21,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:31:21,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:31:21,975 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:31:21,975 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:31:21,975 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:31:21,975 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:31:21,975 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:31:21,975 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:31:21,976 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:31:21,976 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:31:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-24 18:31:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 18:31:22,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:22,007 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] [2020-09-24 18:31:22,008 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:22,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2048298944, now seen corresponding path program 1 times [2020-09-24 18:31:22,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:22,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105360778] [2020-09-24 18:31:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:22,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:22,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:31:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-24 18:31:22,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:31:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:31:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:31:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:31:23,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:23,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:31:23,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:23,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,109 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 18:31:23,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105360778] [2020-09-24 18:31:23,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:23,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 18:31:23,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327366396] [2020-09-24 18:31:23,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:31:23,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:23,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:31:23,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:31:23,147 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 10 states. [2020-09-24 18:31:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:23,778 INFO L93 Difference]: Finished difference Result 109 states and 147 transitions. [2020-09-24 18:31:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:31:23,780 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-09-24 18:31:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:23,794 INFO L225 Difference]: With dead ends: 109 [2020-09-24 18:31:23,794 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 18:31:23,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:31:23,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 18:31:23,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 31. [2020-09-24 18:31:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 18:31:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-09-24 18:31:23,854 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2020-09-24 18:31:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:23,855 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-09-24 18:31:23,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:31:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-09-24 18:31:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 18:31:23,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:23,856 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] [2020-09-24 18:31:23,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:31:23,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:23,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:23,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1303654892, now seen corresponding path program 1 times [2020-09-24 18:31:23,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:23,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420625599] [2020-09-24 18:31:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:24,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:31:24,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-09-24 18:31:24,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:31:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:31:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:31:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:24,813 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 25 [2020-09-24 18:31:24,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:24,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:24,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:24,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:31:24,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:24,889 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 18:31:24,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420625599] [2020-09-24 18:31:24,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:24,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:31:24,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006698055] [2020-09-24 18:31:24,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:31:24,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:24,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:31:24,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:31:24,894 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 12 states. [2020-09-24 18:31:25,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:25,538 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2020-09-24 18:31:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:31:25,539 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-09-24 18:31:25,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:25,541 INFO L225 Difference]: With dead ends: 76 [2020-09-24 18:31:25,542 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 18:31:25,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:31:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 18:31:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 34. [2020-09-24 18:31:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 18:31:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-09-24 18:31:25,553 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-09-24 18:31:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:25,553 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-09-24 18:31:25,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:31:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-09-24 18:31:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 18:31:25,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:25,555 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] [2020-09-24 18:31:25,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:31:25,555 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:25,556 INFO L82 PathProgramCache]: Analyzing trace with hash -132325864, now seen corresponding path program 2 times [2020-09-24 18:31:25,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:25,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131066155] [2020-09-24 18:31:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:26,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:31:26,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:31:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-09-24 18:31:26,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:31:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:31:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:31:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:31:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:26,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:26,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:31:26,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:31:26,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131066155] [2020-09-24 18:31:26,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:26,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:31:26,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114811904] [2020-09-24 18:31:26,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:31:26,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:26,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:31:26,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:31:26,424 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2020-09-24 18:31:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:26,541 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-24 18:31:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:31:26,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-24 18:31:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:26,543 INFO L225 Difference]: With dead ends: 55 [2020-09-24 18:31:26,543 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 18:31:26,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:31:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 18:31:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-09-24 18:31:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 18:31:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-09-24 18:31:26,551 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 28 [2020-09-24 18:31:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:26,551 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-09-24 18:31:26,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:31:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-09-24 18:31:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 18:31:26,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:26,553 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:26,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:31:26,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:26,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:26,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1365663380, now seen corresponding path program 1 times [2020-09-24 18:31:26,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:26,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214326158] [2020-09-24 18:31:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:26,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:27,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:27,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:31:27,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:31:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-09-24 18:31:27,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:31:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:31:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:31:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:27,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:27,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:27,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:27,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:27,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:31:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214326158] [2020-09-24 18:31:27,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:27,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:31:27,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024790259] [2020-09-24 18:31:27,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:31:27,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:27,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:31:27,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:31:27,346 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2020-09-24 18:31:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:29,561 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-09-24 18:31:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:31:29,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-24 18:31:29,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:29,562 INFO L225 Difference]: With dead ends: 51 [2020-09-24 18:31:29,562 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 18:31:29,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:31:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 18:31:29,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-09-24 18:31:29,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 18:31:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-09-24 18:31:29,576 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 29 [2020-09-24 18:31:29,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:29,577 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-09-24 18:31:29,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:31:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-09-24 18:31:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 18:31:29,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:29,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:29,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:31:29,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:29,580 INFO L82 PathProgramCache]: Analyzing trace with hash 85634078, now seen corresponding path program 1 times [2020-09-24 18:31:29,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:29,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8636799] [2020-09-24 18:31:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:30,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:30,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:31:30,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:31:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-09-24 18:31:30,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:31:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:31:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:31:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:32,524 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2020-09-24 18:31:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:32,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:32,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:31:32,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:31:32,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8636799] [2020-09-24 18:31:32,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:32,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:31:32,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49251253] [2020-09-24 18:31:32,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:31:32,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:32,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:31:32,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:31:32,623 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2020-09-24 18:31:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:41,116 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-24 18:31:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:31:41,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 18:31:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:41,118 INFO L225 Difference]: With dead ends: 59 [2020-09-24 18:31:41,119 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 18:31:41,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:31:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 18:31:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-24 18:31:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 18:31:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-09-24 18:31:41,127 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-09-24 18:31:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:41,127 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-09-24 18:31:41,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:31:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-09-24 18:31:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 18:31:41,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:41,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:41,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:31:41,129 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:41,130 INFO L82 PathProgramCache]: Analyzing trace with hash -613358466, now seen corresponding path program 1 times [2020-09-24 18:31:41,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:41,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116330684] [2020-09-24 18:31:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:41,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:41,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:31:41,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-24 18:31:41,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:31:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:31:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:31:41,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:41,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:41,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:41,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:41,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:41,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 18:31:41,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116330684] [2020-09-24 18:31:41,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:41,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:31:41,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789995429] [2020-09-24 18:31:41,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:31:41,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:41,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:31:41,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:31:41,978 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 12 states. [2020-09-24 18:31:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:42,542 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2020-09-24 18:31:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 18:31:42,543 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-09-24 18:31:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:42,543 INFO L225 Difference]: With dead ends: 58 [2020-09-24 18:31:42,543 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:31:42,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-09-24 18:31:42,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:31:42,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:31:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:31:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:31:42,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-24 18:31:42,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:42,550 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:31:42,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:31:42,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:31:42,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:31:42,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:31:42,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:31:42,814 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:31:42,815 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-24 18:31:42,815 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:31:42,815 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:31:42,815 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:31:42,815 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:31:42,816 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:31:42,816 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:42,816 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:42,816 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 18:31:42,816 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 18:31:42,817 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:42,817 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 18:31:42,817 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-09-24 18:31:42,817 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 33) no Hoare annotation was computed. [2020-09-24 18:31:42,817 INFO L268 CegarLoopResult]: For program point L23(lines 23 28) no Hoare annotation was computed. [2020-09-24 18:31:42,817 INFO L268 CegarLoopResult]: For program point L25-2(lines 21 28) no Hoare annotation was computed. [2020-09-24 18:31:42,818 INFO L268 CegarLoopResult]: For program point L21(lines 21 28) no Hoare annotation was computed. [2020-09-24 18:31:42,818 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 18:31:42,819 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) [2020-09-24 18:31:42,819 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 18:31:42,820 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (or (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0)) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse1 (+ main_~i~0 main_~k~0))) (and (<= 0 .cse1) (<= 0 .cse2) (<= main_~i~0 0) (<= .cse2 0) (= main_~l~0 0) (<= 0 main_~i~0) (<= .cse0 0) (<= .cse1 0) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296))) (+ (* 4294967296 (div .cse0 4294967296)) main_~l~0)))))) [2020-09-24 18:31:42,820 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 18:31:42,820 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 18:31:42,820 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 18:31:42,821 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 18:31:42,821 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 33) no Hoare annotation was computed. [2020-09-24 18:31:42,821 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 18:31:42,821 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 33) the Hoare annotation is: true [2020-09-24 18:31:42,821 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 18:31:42,822 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 18:31:42,822 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:31:42,822 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 18:31:42,822 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 18:31:42,822 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 18:31:42,822 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 18:31:42,822 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 18:31:42,822 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:31:42,823 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 18:31:42,823 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 18:31:42,823 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:31:42,823 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 18:31:42,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:31:42 BoogieIcfgContainer [2020-09-24 18:31:42,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:31:42,873 INFO L168 Benchmark]: Toolchain (without parser) took 21863.00 ms. Allocated memory was 136.3 MB in the beginning and 318.8 MB in the end (delta: 182.5 MB). Free memory was 98.7 MB in the beginning and 229.2 MB in the end (delta: -130.5 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:42,875 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 136.3 MB. Free memory was 116.6 MB in the beginning and 116.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 18:31:42,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.71 ms. Allocated memory is still 136.3 MB. Free memory was 98.0 MB in the beginning and 88.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:42,879 INFO L168 Benchmark]: Boogie Preprocessor took 114.14 ms. Allocated memory was 136.3 MB in the beginning and 198.2 MB in the end (delta: 61.9 MB). Free memory was 88.3 MB in the beginning and 177.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:42,880 INFO L168 Benchmark]: RCFGBuilder took 427.76 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 161.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:42,881 INFO L168 Benchmark]: TraceAbstraction took 20980.27 ms. Allocated memory was 198.2 MB in the beginning and 318.8 MB in the end (delta: 120.6 MB). Free memory was 161.1 MB in the beginning and 229.2 MB in the end (delta: -68.1 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:42,890 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 136.3 MB. Free memory was 116.6 MB in the beginning and 116.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.71 ms. Allocated memory is still 136.3 MB. Free memory was 98.0 MB in the beginning and 88.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.14 ms. Allocated memory was 136.3 MB in the beginning and 198.2 MB in the end (delta: 61.9 MB). Free memory was 88.3 MB in the beginning and 177.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.76 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 161.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20980.27 ms. Allocated memory was 198.2 MB in the beginning and 318.8 MB in the end (delta: 120.6 MB). Free memory was 161.1 MB in the beginning and 229.2 MB in the end (delta: -68.1 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: i + j + k + v4 <= l && l <= i + j + k + v4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 607 SDslu, 206 SDs, 0 SdLazy, 801 SolverSat, 116 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, 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, 6 MinimizatonAttempts, 80 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 24 NumberOfFragments, 99 HoareAnnotationTreeSize, 14 FomulaSimplifications, 3259 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 36968 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 15/22 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...