/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:21:03,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:21:03,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:21:03,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:21:03,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:21:03,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:21:03,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:21:03,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:21:03,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:21:03,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:21:03,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:21:03,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:21:03,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:21:03,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:21:03,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:21:03,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:21:03,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:21:03,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:21:03,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:21:03,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:21:03,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:21:03,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:21:03,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:21:03,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:21:03,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:21:03,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:21:03,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:21:03,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:21:03,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:21:03,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:21:03,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:21:03,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:21:03,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:21:03,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:21:03,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:21:03,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:21:03,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:21:03,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:21:03,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:21:03,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:21:03,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:21:03,815 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 [2020-09-25 02:21:03,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:21:03,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:21:03,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:21:03,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:21:03,863 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:21:03,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:21:03,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:21:03,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:21:03,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:21:03,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:21:03,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:21:03,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:21:03,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:21:03,866 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:21:03,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:21:03,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:21:03,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:21:03,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:21:03,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:21:03,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:21:03,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:21:03,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:21:03,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:21:03,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:21:03,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:21:03,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:21:03,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:21:03,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:21:03,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:21:03,869 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:21:04,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:21:04,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:21:04,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:21:04,384 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:21:04,385 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:21:04,386 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-09-25 02:21:04,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481c1e396/9a7aa416bb574d26ad8acfd9556e56fd/FLAGa5df87bc9 [2020-09-25 02:21:04,991 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:21:04,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-09-25 02:21:05,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481c1e396/9a7aa416bb574d26ad8acfd9556e56fd/FLAGa5df87bc9 [2020-09-25 02:21:05,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481c1e396/9a7aa416bb574d26ad8acfd9556e56fd [2020-09-25 02:21:05,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:21:05,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:21:05,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:21:05,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:21:05,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:21:05,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05, skipping insertion in model container [2020-09-25 02:21:05,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:21:05,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:21:05,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:21:05,689 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:21:05,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:21:05,731 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:21:05,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05 WrapperNode [2020-09-25 02:21:05,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:21:05,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:21:05,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:21:05,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:21:05,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (1/1) ... [2020-09-25 02:21:05,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:21:05,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:21:05,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:21:05,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:21:05,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (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 [2020-09-25 02:21:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:21:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:21:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:21:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:21:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:21:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:21:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:21:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:21:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:21:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:21:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:21:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:21:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:21:06,281 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:21:06,282 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:21:06,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:21:06 BoogieIcfgContainer [2020-09-25 02:21:06,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:21:06,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:21:06,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:21:06,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:21:06,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:21:05" (1/3) ... [2020-09-25 02:21:06,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e887354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:21:06, skipping insertion in model container [2020-09-25 02:21:06,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:21:05" (2/3) ... [2020-09-25 02:21:06,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e887354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:21:06, skipping insertion in model container [2020-09-25 02:21:06,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:21:06" (3/3) ... [2020-09-25 02:21:06,298 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-09-25 02:21:06,312 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:21:06,323 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:21:06,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:21:06,382 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:21:06,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:21:06,383 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:21:06,383 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:21:06,383 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:21:06,383 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:21:06,383 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:21:06,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:21:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-25 02:21:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 02:21:06,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:06,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:06,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:06,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2048298944, now seen corresponding path program 1 times [2020-09-25 02:21:06,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:06,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76959396] [2020-09-25 02:21:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:07,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:07,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:21:07,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:07,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-25 02:21:07,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:07,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:21:07,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:21:07,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:21:07,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:21:07,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:07,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:07,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:07,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:07,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:21:07,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:21:07,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76959396] [2020-09-25 02:21:07,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:21:07,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 02:21:07,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681350824] [2020-09-25 02:21:07,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:21:07,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:21:07,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:21:07,534 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 10 states. [2020-09-25 02:21:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:08,163 INFO L93 Difference]: Finished difference Result 109 states and 147 transitions. [2020-09-25 02:21:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:21:08,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-09-25 02:21:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:08,182 INFO L225 Difference]: With dead ends: 109 [2020-09-25 02:21:08,182 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 02:21:08,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:21:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 02:21:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 31. [2020-09-25 02:21:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 02:21:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-09-25 02:21:08,246 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2020-09-25 02:21:08,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:08,247 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-09-25 02:21:08,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:21:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-09-25 02:21:08,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 02:21:08,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:08,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:08,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:21:08,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:08,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:08,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1303654892, now seen corresponding path program 1 times [2020-09-25 02:21:08,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:08,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172537291] [2020-09-25 02:21:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:08,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:08,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:21:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:08,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-25 02:21:08,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:08,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:21:08,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:21:08,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:21:08,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:21:09,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:09,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:09,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:09,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:21:09,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:21:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:21:09,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172537291] [2020-09-25 02:21:09,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:21:09,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:21:09,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177679250] [2020-09-25 02:21:09,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:21:09,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:09,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:21:09,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:21:09,142 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 12 states. [2020-09-25 02:21:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:09,748 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2020-09-25 02:21:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:21:09,749 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-09-25 02:21:09,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:09,751 INFO L225 Difference]: With dead ends: 76 [2020-09-25 02:21:09,751 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 02:21:09,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:21:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 02:21:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 34. [2020-09-25 02:21:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:21:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-09-25 02:21:09,762 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-09-25 02:21:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:09,763 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-09-25 02:21:09,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:21:09,763 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-09-25 02:21:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 02:21:09,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:09,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:09,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:21:09,765 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:09,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:09,765 INFO L82 PathProgramCache]: Analyzing trace with hash -132325864, now seen corresponding path program 2 times [2020-09-25 02:21:09,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:09,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982123184] [2020-09-25 02:21:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:09,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:09,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:10,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 02:21:10,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:21:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-25 02:21:10,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:21:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:21:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 02:21:10,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:21:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:10,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:10,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:10,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:10,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:10,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:21:10,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:21:10,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982123184] [2020-09-25 02:21:10,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:21:10,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:21:10,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101135362] [2020-09-25 02:21:10,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:21:10,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:10,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:21:10,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:21:10,601 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2020-09-25 02:21:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:18,999 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-09-25 02:21:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:21:19,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 02:21:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:19,073 INFO L225 Difference]: With dead ends: 53 [2020-09-25 02:21:19,073 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 02:21:19,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:21:19,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 02:21:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 02:21:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 02:21:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-25 02:21:19,083 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2020-09-25 02:21:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:19,083 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-25 02:21:19,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:21:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-25 02:21:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 02:21:19,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:19,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:19,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:21:19,085 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1365663380, now seen corresponding path program 1 times [2020-09-25 02:21:19,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:19,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302339570] [2020-09-25 02:21:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:19,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:19,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:19,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:19,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:21:19,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:21:19,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-09-25 02:21:19,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:21:19,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:21:19,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:21:19,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:19,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:19,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:19,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:21:19,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:21:19,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302339570] [2020-09-25 02:21:19,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:21:19,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:21:19,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625017034] [2020-09-25 02:21:19,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:21:19,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:21:19,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:21:19,933 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-09-25 02:21:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:22,166 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-09-25 02:21:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:21:22,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 02:21:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:22,169 INFO L225 Difference]: With dead ends: 57 [2020-09-25 02:21:22,169 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 02:21:22,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:21:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 02:21:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-09-25 02:21:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 02:21:22,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-09-25 02:21:22,177 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 29 [2020-09-25 02:21:22,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:22,177 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-09-25 02:21:22,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:21:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-09-25 02:21:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:21:22,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:22,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:22,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:21:22,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:22,180 INFO L82 PathProgramCache]: Analyzing trace with hash 85634078, now seen corresponding path program 1 times [2020-09-25 02:21:22,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:22,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713478389] [2020-09-25 02:21:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:22,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 02:21:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:21:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-09-25 02:21:22,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:21:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:21:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:21:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:25,082 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2020-09-25 02:21:28,951 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 35 DAG size of output: 13 [2020-09-25 02:21:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:28,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:28,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:21:28,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:28,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:28,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:28,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:21:28,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713478389] [2020-09-25 02:21:28,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:21:28,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:21:28,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689074558] [2020-09-25 02:21:28,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:21:28,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:28,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:21:28,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2020-09-25 02:21:28,986 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-09-25 02:21:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:37,443 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-09-25 02:21:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:21:37,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 02:21:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:37,446 INFO L225 Difference]: With dead ends: 61 [2020-09-25 02:21:37,446 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 02:21:37,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2020-09-25 02:21:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 02:21:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-25 02:21:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 02:21:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-25 02:21:37,455 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2020-09-25 02:21:37,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:37,456 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-25 02:21:37,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:21:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-25 02:21:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:21:37,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:21:37,457 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:21:37,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:21:37,458 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:21:37,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:21:37,458 INFO L82 PathProgramCache]: Analyzing trace with hash -613358466, now seen corresponding path program 1 times [2020-09-25 02:21:37,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:21:37,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355360840] [2020-09-25 02:21:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:21:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:38,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:38,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 02:21:38,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:38,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-09-25 02:21:38,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:38,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:21:38,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:21:38,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:21:38,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:21:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:21:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:21:38,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:21:38,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:21:38,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:21:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:21:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:21:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:21:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:21:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:21:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:21:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:21:38,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355360840] [2020-09-25 02:21:38,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:21:38,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:21:38,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191333050] [2020-09-25 02:21:38,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:21:38,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:21:38,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:21:38,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:21:38,279 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 12 states. [2020-09-25 02:21:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:21:38,823 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 02:21:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 02:21:38,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-09-25 02:21:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:21:38,825 INFO L225 Difference]: With dead ends: 58 [2020-09-25 02:21:38,825 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:21:38,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:21:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:21:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:21:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:21:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:21:38,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-25 02:21:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:21:38,829 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:21:38,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:21:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:21:38,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:21:38,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:21:38,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:21:39,053 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:21:39,054 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-25 02:21:39,054 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:21:39,054 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:21:39,054 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:21:39,055 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:21:39,055 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:21:39,055 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:21:39,055 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:21:39,055 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 02:21:39,055 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 02:21:39,055 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:21:39,056 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 02:21:39,056 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-09-25 02:21:39,056 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 33) no Hoare annotation was computed. [2020-09-25 02:21:39,056 INFO L268 CegarLoopResult]: For program point L23(lines 23 28) no Hoare annotation was computed. [2020-09-25 02:21:39,056 INFO L268 CegarLoopResult]: For program point L25-2(lines 21 28) no Hoare annotation was computed. [2020-09-25 02:21:39,056 INFO L268 CegarLoopResult]: For program point L21(lines 21 28) no Hoare annotation was computed. [2020-09-25 02:21:39,056 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 02:21:39,057 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) [2020-09-25 02:21:39,057 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 02:21:39,057 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (or (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0)) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse1 (+ main_~i~0 main_~k~0))) (and (<= 0 .cse1) (<= 0 .cse2) (<= main_~i~0 0) (<= .cse2 0) (= main_~l~0 0) (<= 0 main_~i~0) (<= .cse0 0) (<= .cse1 0) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296))) (+ (* 4294967296 (div .cse0 4294967296)) main_~l~0)))))) [2020-09-25 02:21:39,057 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 02:21:39,057 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 02:21:39,058 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 02:21:39,058 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 02:21:39,058 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 33) no Hoare annotation was computed. [2020-09-25 02:21:39,058 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 02:21:39,058 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 33) the Hoare annotation is: true [2020-09-25 02:21:39,058 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 02:21:39,058 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 02:21:39,058 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 02:21:39,059 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 02:21:39,059 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 02:21:39,059 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 02:21:39,059 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 02:21:39,059 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 02:21:39,059 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 02:21:39,059 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 02:21:39,060 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 02:21:39,060 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 02:21:39,060 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 02:21:39,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:21:39 BoogieIcfgContainer [2020-09-25 02:21:39,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:21:39,085 INFO L168 Benchmark]: Toolchain (without parser) took 33729.03 ms. Allocated memory was 145.8 MB in the beginning and 294.6 MB in the end (delta: 148.9 MB). Free memory was 102.0 MB in the beginning and 115.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 135.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:39,086 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 02:21:39,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.07 ms. Allocated memory is still 145.8 MB. Free memory was 101.4 MB in the beginning and 91.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:39,088 INFO L168 Benchmark]: Boogie Preprocessor took 123.89 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 179.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:39,089 INFO L168 Benchmark]: RCFGBuilder took 430.44 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 164.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:39,090 INFO L168 Benchmark]: TraceAbstraction took 32793.81 ms. Allocated memory was 201.3 MB in the beginning and 294.6 MB in the end (delta: 93.3 MB). Free memory was 163.9 MB in the beginning and 115.3 MB in the end (delta: 48.6 MB). Peak memory consumption was 141.9 MB. Max. memory is 7.1 GB. [2020-09-25 02:21:39,094 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.07 ms. Allocated memory is still 145.8 MB. Free memory was 101.4 MB in the beginning and 91.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.89 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 179.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.44 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 164.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32793.81 ms. Allocated memory was 201.3 MB in the beginning and 294.6 MB in the end (delta: 93.3 MB). Free memory was 163.9 MB in the beginning and 115.3 MB in the end (delta: 48.6 MB). Peak memory consumption was 141.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: i + j + k + v4 <= l && l <= i + j + k + v4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.4s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 21.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 600 SDslu, 210 SDs, 0 SdLazy, 786 SolverSat, 118 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 19.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 75 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 24 NumberOfFragments, 99 HoareAnnotationTreeSize, 14 FomulaSimplifications, 4751 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 37076 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 17/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...