/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:28:08,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:28:08,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:28:08,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:28:08,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:28:09,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:28:09,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:28:09,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:28:09,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:28:09,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:28:09,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:28:09,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:28:09,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:28:09,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:28:09,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:28:09,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:28:09,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:28:09,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:28:09,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:28:09,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:28:09,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:28:09,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:28:09,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:28:09,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:28:09,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:28:09,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:28:09,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:28:09,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:28:09,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:28:09,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:28:09,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:28:09,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:28:09,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:28:09,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:28:09,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:28:09,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:28:09,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:28:09,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:28:09,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:28:09,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:28:09,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:28:09,077 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 20:28:09,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:28:09,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:28:09,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:28:09,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:28:09,130 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:28:09,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:28:09,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:28:09,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:28:09,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:28:09,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:28:09,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:28:09,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:28:09,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:28:09,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:28:09,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:28:09,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:28:09,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:28:09,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:28:09,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:28:09,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:28:09,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:28:09,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:28:09,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:28:09,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:28:09,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:28:09,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:28:09,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:28:09,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:28:09,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:28:09,137 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:28:09,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:28:09,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:28:09,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:28:09,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:28:09,641 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:28:09,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-09-24 20:28:09,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b7346664/acbb0be2e98049b19f5d6362d4bdabc2/FLAG6aea9d015 [2020-09-24 20:28:10,249 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:28:10,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-09-24 20:28:10,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b7346664/acbb0be2e98049b19f5d6362d4bdabc2/FLAG6aea9d015 [2020-09-24 20:28:10,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b7346664/acbb0be2e98049b19f5d6362d4bdabc2 [2020-09-24 20:28:10,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:28:10,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:28:10,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:10,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:28:10,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:28:10,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:10,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10, skipping insertion in model container [2020-09-24 20:28:10,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:10,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:28:10,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:28:10,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:10,907 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:28:10,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:10,945 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:28:10,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10 WrapperNode [2020-09-24 20:28:10,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:10,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:28:10,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:28:10,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:28:10,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:10,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:10,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:10,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:10,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:11,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:11,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (1/1) ... [2020-09-24 20:28:11,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:28:11,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:28:11,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:28:11,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:28:11,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (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 20:28:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:28:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:28:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:28:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:28:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:28:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:28:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:28:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:28:11,488 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:28:11,488 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:28:11,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:11 BoogieIcfgContainer [2020-09-24 20:28:11,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:28:11,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:28:11,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:28:11,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:28:11,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:28:10" (1/3) ... [2020-09-24 20:28:11,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a2b874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:11, skipping insertion in model container [2020-09-24 20:28:11,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:10" (2/3) ... [2020-09-24 20:28:11,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a2b874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:11, skipping insertion in model container [2020-09-24 20:28:11,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:11" (3/3) ... [2020-09-24 20:28:11,505 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-09-24 20:28:11,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:28:11,524 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:28:11,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:28:11,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:28:11,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:28:11,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:28:11,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:28:11,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:28:11,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:28:11,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:28:11,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:28:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-09-24 20:28:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:28:11,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:11,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:11,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:11,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:11,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1222569836, now seen corresponding path program 1 times [2020-09-24 20:28:11,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:11,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123649608] [2020-09-24 20:28:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:11,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 20:28:11,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 20:28:11,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:11,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 20:28:11,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:28:11,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:28:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:28:12,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:12,037 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 20:28:12,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123649608] [2020-09-24 20:28:12,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:12,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:12,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859046314] [2020-09-24 20:28:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:12,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:12,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,071 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-09-24 20:28:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,155 INFO L93 Difference]: Finished difference Result 147 states and 198 transitions. [2020-09-24 20:28:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:12,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-09-24 20:28:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,175 INFO L225 Difference]: With dead ends: 147 [2020-09-24 20:28:12,175 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 20:28:12,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 20:28:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-09-24 20:28:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 20:28:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2020-09-24 20:28:12,243 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 43 [2020-09-24 20:28:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,244 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2020-09-24 20:28:12,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2020-09-24 20:28:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 20:28:12,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:12,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:12,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:28:12,247 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:12,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1252462105, now seen corresponding path program 1 times [2020-09-24 20:28:12,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:12,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283254209] [2020-09-24 20:28:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:28:12,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 20:28:12,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:28:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:28:12,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:12,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:12,409 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 20:28:12,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283254209] [2020-09-24 20:28:12,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:12,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:12,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714331903] [2020-09-24 20:28:12,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:12,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:12,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,413 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 3 states. [2020-09-24 20:28:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,437 INFO L93 Difference]: Finished difference Result 116 states and 148 transitions. [2020-09-24 20:28:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:12,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-24 20:28:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,440 INFO L225 Difference]: With dead ends: 116 [2020-09-24 20:28:12,440 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 20:28:12,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 20:28:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2020-09-24 20:28:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 20:28:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2020-09-24 20:28:12,461 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 44 [2020-09-24 20:28:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,462 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2020-09-24 20:28:12,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2020-09-24 20:28:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 20:28:12,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:12,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:12,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:28:12,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:12,465 INFO L82 PathProgramCache]: Analyzing trace with hash 755286414, now seen corresponding path program 1 times [2020-09-24 20:28:12,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:12,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041565220] [2020-09-24 20:28:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:28:12,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:28:12,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:28:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:28:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:28:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:12,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:12,576 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 20:28:12,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041565220] [2020-09-24 20:28:12,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:12,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:12,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833059086] [2020-09-24 20:28:12,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:12,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:12,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,579 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 3 states. [2020-09-24 20:28:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,605 INFO L93 Difference]: Finished difference Result 226 states and 299 transitions. [2020-09-24 20:28:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:12,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-24 20:28:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,608 INFO L225 Difference]: With dead ends: 226 [2020-09-24 20:28:12,608 INFO L226 Difference]: Without dead ends: 157 [2020-09-24 20:28:12,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-24 20:28:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-09-24 20:28:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 20:28:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 200 transitions. [2020-09-24 20:28:12,626 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 200 transitions. Word has length 44 [2020-09-24 20:28:12,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,627 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 200 transitions. [2020-09-24 20:28:12,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 200 transitions. [2020-09-24 20:28:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 20:28:12,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:12,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:12,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:28:12,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:12,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:12,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1863120818, now seen corresponding path program 1 times [2020-09-24 20:28:12,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:12,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350891333] [2020-09-24 20:28:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:28:12,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 20:28:12,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 20:28:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:12,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:12,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:28:12,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:28:12,773 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 20:28:12,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350891333] [2020-09-24 20:28:12,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:12,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:12,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895770105] [2020-09-24 20:28:12,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:12,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:12,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,779 INFO L87 Difference]: Start difference. First operand 155 states and 200 transitions. Second operand 3 states. [2020-09-24 20:28:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,806 INFO L93 Difference]: Finished difference Result 191 states and 246 transitions. [2020-09-24 20:28:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:12,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-09-24 20:28:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,809 INFO L225 Difference]: With dead ends: 191 [2020-09-24 20:28:12,810 INFO L226 Difference]: Without dead ends: 189 [2020-09-24 20:28:12,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-24 20:28:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 155. [2020-09-24 20:28:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 20:28:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions. [2020-09-24 20:28:12,825 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 45 [2020-09-24 20:28:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,826 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 198 transitions. [2020-09-24 20:28:12,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions. [2020-09-24 20:28:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 20:28:12,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:12,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:12,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:28:12,828 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:12,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1939288392, now seen corresponding path program 1 times [2020-09-24 20:28:12,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:12,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456936532] [2020-09-24 20:28:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:28:12,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 20:28:12,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 20:28:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:28:12,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:12,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:12,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:12,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:12,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:12,913 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 20:28:12,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456936532] [2020-09-24 20:28:12,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:12,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:12,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328998069] [2020-09-24 20:28:12,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:12,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:12,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:12,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,916 INFO L87 Difference]: Start difference. First operand 155 states and 198 transitions. Second operand 3 states. [2020-09-24 20:28:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:12,946 INFO L93 Difference]: Finished difference Result 403 states and 528 transitions. [2020-09-24 20:28:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:12,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-09-24 20:28:12,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:12,952 INFO L225 Difference]: With dead ends: 403 [2020-09-24 20:28:12,954 INFO L226 Difference]: Without dead ends: 273 [2020-09-24 20:28:12,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-24 20:28:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2020-09-24 20:28:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 20:28:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 346 transitions. [2020-09-24 20:28:12,992 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 346 transitions. Word has length 45 [2020-09-24 20:28:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:12,993 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 346 transitions. [2020-09-24 20:28:12,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 346 transitions. [2020-09-24 20:28:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:28:13,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:13,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:28:13,004 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,004 INFO L82 PathProgramCache]: Analyzing trace with hash -11355582, now seen corresponding path program 1 times [2020-09-24 20:28:13,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549891270] [2020-09-24 20:28:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 20:28:13,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 20:28:13,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 20:28:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:28:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:13,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:13,150 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 20:28:13,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549891270] [2020-09-24 20:28:13,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426215722] [2020-09-24 20:28:13,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,155 INFO L87 Difference]: Start difference. First operand 271 states and 346 transitions. Second operand 3 states. [2020-09-24 20:28:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,192 INFO L93 Difference]: Finished difference Result 739 states and 956 transitions. [2020-09-24 20:28:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-24 20:28:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,196 INFO L225 Difference]: With dead ends: 739 [2020-09-24 20:28:13,196 INFO L226 Difference]: Without dead ends: 493 [2020-09-24 20:28:13,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-09-24 20:28:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-09-24 20:28:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-24 20:28:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 618 transitions. [2020-09-24 20:28:13,222 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 618 transitions. Word has length 46 [2020-09-24 20:28:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,223 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 618 transitions. [2020-09-24 20:28:13,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 618 transitions. [2020-09-24 20:28:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:28:13,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:13,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:28:13,226 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash 338056749, now seen corresponding path program 1 times [2020-09-24 20:28:13,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393084420] [2020-09-24 20:28:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 20:28:13,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 20:28:13,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 20:28:13,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:13,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:13,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,304 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 20:28:13,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393084420] [2020-09-24 20:28:13,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666894028] [2020-09-24 20:28:13,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,306 INFO L87 Difference]: Start difference. First operand 491 states and 618 transitions. Second operand 3 states. [2020-09-24 20:28:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,334 INFO L93 Difference]: Finished difference Result 599 states and 748 transitions. [2020-09-24 20:28:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-24 20:28:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,338 INFO L225 Difference]: With dead ends: 599 [2020-09-24 20:28:13,338 INFO L226 Difference]: Without dead ends: 597 [2020-09-24 20:28:13,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-09-24 20:28:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 491. [2020-09-24 20:28:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-24 20:28:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 610 transitions. [2020-09-24 20:28:13,359 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 610 transitions. Word has length 46 [2020-09-24 20:28:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,359 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 610 transitions. [2020-09-24 20:28:13,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,360 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 610 transitions. [2020-09-24 20:28:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:28:13,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:13,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:28:13,363 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,364 INFO L82 PathProgramCache]: Analyzing trace with hash -144915038, now seen corresponding path program 1 times [2020-09-24 20:28:13,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392030147] [2020-09-24 20:28:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:28:13,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 20:28:13,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 20:28:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:13,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:13,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,452 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 20:28:13,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392030147] [2020-09-24 20:28:13,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258135860] [2020-09-24 20:28:13,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,455 INFO L87 Difference]: Start difference. First operand 491 states and 610 transitions. Second operand 3 states. [2020-09-24 20:28:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,482 INFO L93 Difference]: Finished difference Result 591 states and 724 transitions. [2020-09-24 20:28:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-09-24 20:28:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,485 INFO L225 Difference]: With dead ends: 591 [2020-09-24 20:28:13,486 INFO L226 Difference]: Without dead ends: 589 [2020-09-24 20:28:13,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-09-24 20:28:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 491. [2020-09-24 20:28:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-24 20:28:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 602 transitions. [2020-09-24 20:28:13,513 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 602 transitions. Word has length 47 [2020-09-24 20:28:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,513 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 602 transitions. [2020-09-24 20:28:13,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 602 transitions. [2020-09-24 20:28:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:28:13,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:13,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:28:13,523 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,524 INFO L82 PathProgramCache]: Analyzing trace with hash -351776260, now seen corresponding path program 1 times [2020-09-24 20:28:13,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329788396] [2020-09-24 20:28:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:28:13,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 20:28:13,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 20:28:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:28:13,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:13,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,628 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 20:28:13,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329788396] [2020-09-24 20:28:13,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963548579] [2020-09-24 20:28:13,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,637 INFO L87 Difference]: Start difference. First operand 491 states and 602 transitions. Second operand 3 states. [2020-09-24 20:28:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,671 INFO L93 Difference]: Finished difference Result 1373 states and 1691 transitions. [2020-09-24 20:28:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-09-24 20:28:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,675 INFO L225 Difference]: With dead ends: 1373 [2020-09-24 20:28:13,675 INFO L226 Difference]: Without dead ends: 491 [2020-09-24 20:28:13,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-09-24 20:28:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2020-09-24 20:28:13,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-24 20:28:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 570 transitions. [2020-09-24 20:28:13,695 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 570 transitions. Word has length 47 [2020-09-24 20:28:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,696 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 570 transitions. [2020-09-24 20:28:13,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 570 transitions. [2020-09-24 20:28:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:28:13,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:13,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:28:13,698 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2062829121, now seen corresponding path program 1 times [2020-09-24 20:28:13,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209873946] [2020-09-24 20:28:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:28:13,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 20:28:13,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 20:28:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:13,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:13,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,811 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 20:28:13,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209873946] [2020-09-24 20:28:13,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:13,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426281929] [2020-09-24 20:28:13,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:13,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:13,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,813 INFO L87 Difference]: Start difference. First operand 491 states and 570 transitions. Second operand 3 states. [2020-09-24 20:28:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,825 INFO L93 Difference]: Finished difference Result 491 states and 570 transitions. [2020-09-24 20:28:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:13,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-24 20:28:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,827 INFO L225 Difference]: With dead ends: 491 [2020-09-24 20:28:13,827 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:28:13,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:13,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:28:13,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:28:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:28:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:28:13,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-09-24 20:28:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,829 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:28:13,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:28:13,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:28:13,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:28:13,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:28:13,857 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 20:28:13,857 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:28:13,857 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:28:13,857 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:28:13,858 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:28:13,858 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:28:13,858 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-09-24 20:28:13,858 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-09-24 20:28:13,858 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:28:13,858 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-09-24 20:28:13,858 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,859 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,859 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 20:28:13,859 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,859 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 20:28:13,859 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 20:28:13,859 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-09-24 20:28:13,859 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 20:28:13,859 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 20:28:13,860 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-24 20:28:13,860 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-24 20:28:13,860 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 20:28:13,860 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 20:28:13,860 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-09-24 20:28:13,860 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-09-24 20:28:13,861 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,861 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-09-24 20:28:13,861 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 20:28:13,861 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-24 20:28:13,861 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 20:28:13,861 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 20:28:13,861 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-24 20:28:13,861 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 20:28:13,862 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-09-24 20:28:13,862 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:28:13,862 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:28:13,862 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 20:28:13,862 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,862 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 20:28:13,863 INFO L268 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2020-09-24 20:28:13,863 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,863 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:28:13,863 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,863 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-24 20:28:13,863 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-24 20:28:13,863 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,863 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 20:28:13,864 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-24 20:28:13,864 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:28:13,864 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 20:28:13,864 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 20:28:13,864 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-24 20:28:13,864 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-09-24 20:28:13,864 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-24 20:28:13,865 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 20:28:13,865 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 20:28:13,865 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 20:28:13,865 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 20:28:13,865 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-24 20:28:13,865 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-09-24 20:28:13,865 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-24 20:28:13,866 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-09-24 20:28:13,866 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 20:28:13,866 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 20:28:13,866 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 20:28:13,866 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 20:28:13,866 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 20:28:13,866 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-09-24 20:28:13,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:28:13 BoogieIcfgContainer [2020-09-24 20:28:13,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:28:13,883 INFO L168 Benchmark]: Toolchain (without parser) took 3259.61 ms. Allocated memory was 140.0 MB in the beginning and 246.4 MB in the end (delta: 106.4 MB). Free memory was 103.5 MB in the beginning and 200.0 MB in the end (delta: -96.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:13,884 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:28:13,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.31 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:13,886 INFO L168 Benchmark]: Boogie Preprocessor took 120.76 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.0 MB in the beginning and 183.0 MB in the end (delta: -90.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:13,887 INFO L168 Benchmark]: RCFGBuilder took 426.88 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 164.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:13,887 INFO L168 Benchmark]: TraceAbstraction took 2383.88 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 164.3 MB in the beginning and 200.0 MB in the end (delta: -35.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:13,891 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.31 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.76 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.0 MB in the beginning and 183.0 MB in the end (delta: -90.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.88 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 164.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2383.88 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 164.3 MB in the beginning and 200.0 MB in the end (delta: -35.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 956 SDtfs, 332 SDslu, 668 SDs, 0 SdLazy, 49 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 266 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 41 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 445 ConstructedInterpolants, 0 QuantifiedInterpolants, 24725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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...