/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options 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/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:36:15,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:36:15,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:36:15,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:36:15,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:36:15,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:36:15,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:36:15,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:36:15,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:36:15,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:36:15,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:36:15,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:36:15,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:36:15,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:36:15,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:36:15,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:36:15,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:36:15,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:36:15,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:36:15,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:36:15,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:36:15,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:36:15,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:36:15,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:36:15,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:36:15,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:36:15,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:36:15,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:36:15,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:36:15,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:36:15,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:36:15,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:36:16,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:36:16,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:36:16,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:36:16,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:36:16,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:36:16,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:36:16,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:36:16,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:36:16,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:36:16,007 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 [2020-09-21 12:36:16,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:36:16,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:36:16,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:36:16,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:36:16,034 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:36:16,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:36:16,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:36:16,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:36:16,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:36:16,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:36:16,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:36:16,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:36:16,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:36:16,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:36:16,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:36:16,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:36:16,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:36:16,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:36:16,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:36:16,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:36:16,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:36:16,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:36:16,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:36:16,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:36:16,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:36:16,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:36:16,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:36:16,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:36:16,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:36:16,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> 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; [2020-09-21 12:36:16,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:36:16,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:36:16,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:36:16,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:36:16,539 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:36:16,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-21 12:36:16,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7b3250a/0ab16a3431654103835e46b53a0845d8/FLAGd32852842 [2020-09-21 12:36:17,153 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:36:17,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-21 12:36:17,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7b3250a/0ab16a3431654103835e46b53a0845d8/FLAGd32852842 [2020-09-21 12:36:17,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7b3250a/0ab16a3431654103835e46b53a0845d8 [2020-09-21 12:36:17,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:36:17,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:36:17,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:17,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:36:17,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:36:17,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87e4b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17, skipping insertion in model container [2020-09-21 12:36:17,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:36:17,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:36:17,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:17,844 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:36:17,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:17,881 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:36:17,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17 WrapperNode [2020-09-21 12:36:17,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:17,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:36:17,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:36:17,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:36:17,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (1/1) ... [2020-09-21 12:36:17,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:36:17,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:36:17,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:36:17,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:36:18,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (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 [2020-09-21 12:36:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:36:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:36:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:36:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:36:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:36:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:36:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:36:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:36:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:36:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:36:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:36:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:36:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:36:18,351 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:36:18,351 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 12:36:18,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:18 BoogieIcfgContainer [2020-09-21 12:36:18,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:36:18,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:36:18,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:36:18,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:36:18,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:36:17" (1/3) ... [2020-09-21 12:36:18,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b34c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:18, skipping insertion in model container [2020-09-21 12:36:18,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:17" (2/3) ... [2020-09-21 12:36:18,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b34c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:18, skipping insertion in model container [2020-09-21 12:36:18,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:18" (3/3) ... [2020-09-21 12:36:18,366 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-09-21 12:36:18,379 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:36:18,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:36:18,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:36:18,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:36:18,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:36:18,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:36:18,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:36:18,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:36:18,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:36:18,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:36:18,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:36:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-21 12:36:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:36:18,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:18,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:18,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:18,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:18,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1671060194, now seen corresponding path program 1 times [2020-09-21 12:36:18,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:18,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269346671] [2020-09-21 12:36:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:18,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:19,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:36:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:36:19,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-09-21 12:36:19,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:36:19,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:36:19,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:36:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:36:19,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:19,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:19,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:36:19,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:19,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:19,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269346671] [2020-09-21 12:36:19,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:19,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:19,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615734026] [2020-09-21 12:36:19,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:19,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:19,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:19,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:19,491 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-09-21 12:36:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:19,674 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2020-09-21 12:36:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:36:19,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-21 12:36:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:19,688 INFO L225 Difference]: With dead ends: 55 [2020-09-21 12:36:19,688 INFO L226 Difference]: Without dead ends: 29 [2020-09-21 12:36:19,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:36:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-21 12:36:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-09-21 12:36:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-21 12:36:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-09-21 12:36:19,746 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2020-09-21 12:36:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:19,747 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-09-21 12:36:19,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-09-21 12:36:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:36:19,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:19,749 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:19,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:36:19,750 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:19,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:19,750 INFO L82 PathProgramCache]: Analyzing trace with hash 514965223, now seen corresponding path program 1 times [2020-09-21 12:36:19,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:19,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837543776] [2020-09-21 12:36:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:19,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:20,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:36:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:36:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-09-21 12:36:20,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:36:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:36:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:36:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:20,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:20,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:20,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:20,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:36:20,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837543776] [2020-09-21 12:36:20,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:20,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:36:20,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053126948] [2020-09-21 12:36:20,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:36:20,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:20,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:36:20,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:36:20,541 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-09-21 12:36:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:20,728 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2020-09-21 12:36:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:36:20,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-21 12:36:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:20,731 INFO L225 Difference]: With dead ends: 41 [2020-09-21 12:36:20,731 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 12:36:20,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:36:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 12:36:20,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-09-21 12:36:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-21 12:36:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-21 12:36:20,743 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 21 [2020-09-21 12:36:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:20,744 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-21 12:36:20,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:36:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-21 12:36:20,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 12:36:20,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:20,745 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] [2020-09-21 12:36:20,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:36:20,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:20,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:20,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1134636734, now seen corresponding path program 1 times [2020-09-21 12:36:20,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:20,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378194342] [2020-09-21 12:36:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:20,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:21,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 12:36:21,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-21 12:36:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:36:21,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:36:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:36:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:36:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:21,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:21,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 12:36:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:21,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:21,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:21,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:21,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:21,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:36:21,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:21,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:36:21,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:21,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378194342] [2020-09-21 12:36:21,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:21,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:36:21,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444366708] [2020-09-21 12:36:21,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:36:21,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:21,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:36:21,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:36:21,865 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-21 12:36:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:22,158 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-09-21 12:36:22,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:36:22,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-21 12:36:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:22,164 INFO L225 Difference]: With dead ends: 70 [2020-09-21 12:36:22,164 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 12:36:22,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:36:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 12:36:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-09-21 12:36:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 12:36:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-21 12:36:22,181 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 28 [2020-09-21 12:36:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:22,184 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-21 12:36:22,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:36:22,184 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-21 12:36:22,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 12:36:22,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:22,187 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:22,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:36:22,187 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:22,188 INFO L82 PathProgramCache]: Analyzing trace with hash 83931911, now seen corresponding path program 2 times [2020-09-21 12:36:22,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:22,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708825277] [2020-09-21 12:36:22,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:36:23,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-21 12:36:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:36:23,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:36:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:36:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:36:23,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:23,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:23,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:36:23,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:36:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:23,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:23,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:36:23,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:36:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:36:23,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708825277] [2020-09-21 12:36:23,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:23,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:36:23,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207373469] [2020-09-21 12:36:23,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:36:23,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:23,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:36:23,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:36:23,259 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-21 12:36:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:23,382 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-21 12:36:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:36:23,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-21 12:36:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:23,384 INFO L225 Difference]: With dead ends: 63 [2020-09-21 12:36:23,384 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:36:23,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:36:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:36:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-21 12:36:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:36:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-21 12:36:23,396 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-09-21 12:36:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:23,397 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-21 12:36:23,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:36:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-21 12:36:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-21 12:36:23,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:23,399 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:23,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:36:23,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:23,400 INFO L82 PathProgramCache]: Analyzing trace with hash 848296232, now seen corresponding path program 1 times [2020-09-21 12:36:23,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:23,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983938025] [2020-09-21 12:36:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:36:24,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-21 12:36:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-21 12:36:24,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:36:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:36:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:36:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:24,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:24,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:36:24,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:24,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:24,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:36:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:24,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:36:24,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:36:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 12:36:24,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983938025] [2020-09-21 12:36:24,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:24,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:24,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106146321] [2020-09-21 12:36:24,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:24,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:24,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:24,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:24,469 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2020-09-21 12:36:24,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:24,562 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-09-21 12:36:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:36:24,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-21 12:36:24,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:24,564 INFO L225 Difference]: With dead ends: 75 [2020-09-21 12:36:24,564 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 12:36:24,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:36:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 12:36:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-21 12:36:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 12:36:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-21 12:36:24,573 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-09-21 12:36:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:24,574 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-21 12:36:24,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-21 12:36:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 12:36:24,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:24,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:24,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:36:24,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash -670641491, now seen corresponding path program 2 times [2020-09-21 12:36:24,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:24,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244665110] [2020-09-21 12:36:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-21 12:36:25,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:36:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:36:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:36:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-21 12:36:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:36:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:25,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:25,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:25,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:36:25,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 12:36:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:25,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:25,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:25,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:25,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:36:25,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:25,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:36:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:25,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:25,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:36:25,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:25,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:36:25,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:36:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:36:25,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244665110] [2020-09-21 12:36:25,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:25,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:36:25,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255604786] [2020-09-21 12:36:25,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:36:25,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:36:25,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:36:25,695 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 8 states. [2020-09-21 12:36:25,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:25,847 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-09-21 12:36:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:36:25,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-21 12:36:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:25,848 INFO L225 Difference]: With dead ends: 42 [2020-09-21 12:36:25,848 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:36:25,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:36:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:36:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:36:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:36:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:36:25,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-09-21 12:36:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:25,850 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:36:25,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:36:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:36:25,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:36:25,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:36:25,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:36:26,115 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:36:26,115 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2020-09-21 12:36:26,115 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:36:26,115 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:36:26,116 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:36:26,116 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:36:26,116 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:36:26,116 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:26,117 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-21 12:36:26,118 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:26,118 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:26,118 INFO L271 CegarLoopResult]: At program point L27(lines 14 29) the Hoare annotation is: true [2020-09-21 12:36:26,118 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-09-21 12:36:26,119 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-09-21 12:36:26,119 INFO L264 CegarLoopResult]: At program point L23-3(lines 23 26) the Hoare annotation is: (<= 0 main_~i~0) [2020-09-21 12:36:26,119 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-21 12:36:26,119 INFO L268 CegarLoopResult]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2020-09-21 12:36:26,119 INFO L264 CegarLoopResult]: At program point L24-3(lines 24 26) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~n~0)) [2020-09-21 12:36:26,119 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-21 12:36:26,120 INFO L264 CegarLoopResult]: At program point L25-2(lines 25 26) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-09-21 12:36:26,120 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-21 12:36:26,120 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-09-21 12:36:26,124 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: true [2020-09-21 12:36:26,124 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-09-21 12:36:26,124 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 26) no Hoare annotation was computed. [2020-09-21 12:36:26,124 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-21 12:36:26,125 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-21 12:36:26,125 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-21 12:36:26,125 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-21 12:36:26,125 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-21 12:36:26,125 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-21 12:36:26,125 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-21 12:36:26,126 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-21 12:36:26,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:36:26 BoogieIcfgContainer [2020-09-21 12:36:26,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:36:26,169 INFO L168 Benchmark]: Toolchain (without parser) took 8661.61 ms. Allocated memory was 138.9 MB in the beginning and 286.8 MB in the end (delta: 147.8 MB). Free memory was 102.2 MB in the beginning and 138.9 MB in the end (delta: -36.7 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:26,170 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:36:26,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.67 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:26,178 INFO L168 Benchmark]: Boogie Preprocessor took 115.14 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 180.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:26,179 INFO L168 Benchmark]: RCFGBuilder took 358.67 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 165.1 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:26,180 INFO L168 Benchmark]: TraceAbstraction took 7801.44 ms. Allocated memory was 201.9 MB in the beginning and 286.8 MB in the end (delta: 84.9 MB). Free memory was 164.4 MB in the beginning and 138.9 MB in the end (delta: 25.5 MB). Peak memory consumption was 110.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:26,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.67 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.14 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 180.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.67 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 165.1 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7801.44 ms. Allocated memory was 201.9 MB in the beginning and 286.8 MB in the end (delta: 84.9 MB). Free memory was 164.4 MB in the beginning and 138.9 MB in the end (delta: 25.5 MB). Peak memory consumption was 110.4 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (2 * i <= j && j + 1 <= 3 * i) && i + 1 <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (2 * i <= j && 0 <= i) && i + 1 <= n - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 193 SDslu, 125 SDs, 0 SdLazy, 420 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=4, 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, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 20 PreInvPairs, 38 NumberOfFragments, 66 HoareAnnotationTreeSize, 20 FomulaSimplifications, 817 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 180 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 9209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 59/63 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...