/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:27:58,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:27:58,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:27:58,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:27:58,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:27:58,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:27:58,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:27:58,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:27:58,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:27:58,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:27:58,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:27:58,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:27:58,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:27:58,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:27:58,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:27:58,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:27:58,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:27:58,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:27:58,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:27:58,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:27:58,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:27:58,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:27:58,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:27:58,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:27:58,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:27:58,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:27:58,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:27:58,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:27:58,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:27:58,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:27:58,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:27:58,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:27:58,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:27:58,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:27:58,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:27:58,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:27:58,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:27:58,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:27:58,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:27:58,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:27:58,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:27:58,736 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 03:27:58,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:27:58,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:27:58,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:27:58,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:27:58,782 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:27:58,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:27:58,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:27:58,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:27:58,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:27:58,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:27:58,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:27:58,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:27:58,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:27:58,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:27:58,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:27:58,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:27:58,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:27:58,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:27:58,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:27:58,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:27:58,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:27:58,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:27:58,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:27:58,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:27:58,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:27:58,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:27:58,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:27:58,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:27:58,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:27:58,790 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:27:59,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:27:59,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:27:59,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:27:59,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:27:59,313 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:27:59,314 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 03:27:59,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a365031d/694451d145954ec6b5e60adf841a1be8/FLAGfbce5db93 [2020-09-25 03:27:59,937 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:27:59,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 03:27:59,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a365031d/694451d145954ec6b5e60adf841a1be8/FLAGfbce5db93 [2020-09-25 03:28:00,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a365031d/694451d145954ec6b5e60adf841a1be8 [2020-09-25 03:28:00,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:28:00,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:28:00,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:28:00,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:28:00,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:28:00,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00, skipping insertion in model container [2020-09-25 03:28:00,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:28:00,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:28:00,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:28:00,572 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:28:00,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:28:00,609 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:28:00,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00 WrapperNode [2020-09-25 03:28:00,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:28:00,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:28:00,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:28:00,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:28:00,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (1/1) ... [2020-09-25 03:28:00,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:28:00,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:28:00,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:28:00,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:28:00,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (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 03:28:00,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:28:00,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:28:00,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:28:00,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:28:00,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:28:00,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:28:00,812 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:28:00,812 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:28:00,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:28:00,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:28:00,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:28:00,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:28:00,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:28:01,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:28:01,082 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 03:28:01,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:28:01 BoogieIcfgContainer [2020-09-25 03:28:01,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:28:01,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:28:01,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:28:01,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:28:01,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:28:00" (1/3) ... [2020-09-25 03:28:01,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f439ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:28:01, skipping insertion in model container [2020-09-25 03:28:01,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:00" (2/3) ... [2020-09-25 03:28:01,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f439ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:28:01, skipping insertion in model container [2020-09-25 03:28:01,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:28:01" (3/3) ... [2020-09-25 03:28:01,101 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-25 03:28:01,116 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:28:01,127 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:28:01,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:28:01,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:28:01,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:28:01,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:28:01,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:28:01,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:28:01,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:28:01,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:28:01,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:28:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-25 03:28:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 03:28:01,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:01,227 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] [2020-09-25 03:28:01,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:01,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-25 03:28:01,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:01,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314997675] [2020-09-25 03:28:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:01,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:01,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 03:28:01,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 03:28:01,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:28:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:28:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 03:28:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:28:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:01,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:01,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:01,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:01,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:28:01,770 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 03:28:01,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314997675] [2020-09-25 03:28:01,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:28:01,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:28:01,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230722057] [2020-09-25 03:28:01,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:28:01,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:01,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:28:01,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:28:01,804 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-25 03:28:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:01,950 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-25 03:28:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:28:01,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 03:28:01,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:01,966 INFO L225 Difference]: With dead ends: 89 [2020-09-25 03:28:01,966 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 03:28:01,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:28:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 03:28:02,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 03:28:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:28:02,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-25 03:28:02,022 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-25 03:28:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:02,022 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-25 03:28:02,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:28:02,023 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-25 03:28:02,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 03:28:02,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:02,024 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] [2020-09-25 03:28:02,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:28:02,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:02,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:02,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-25 03:28:02,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:02,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104770192] [2020-09-25 03:28:02,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:02,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 03:28:02,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:02,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 03:28:02,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:28:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 03:28:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:28:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:02,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:02,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:28:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:02,247 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 03:28:02,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104770192] [2020-09-25 03:28:02,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:28:02,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:28:02,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420625599] [2020-09-25 03:28:02,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:28:02,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:02,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:28:02,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:28:02,252 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-25 03:28:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:02,435 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-25 03:28:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:28:02,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 03:28:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:02,438 INFO L225 Difference]: With dead ends: 90 [2020-09-25 03:28:02,438 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 03:28:02,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:28:02,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 03:28:02,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-25 03:28:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 03:28:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-25 03:28:02,456 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-25 03:28:02,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:02,457 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-25 03:28:02,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:28:02,457 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-25 03:28:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 03:28:02,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:02,459 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:02,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:28:02,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:02,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:02,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-25 03:28:02,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:02,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364279949] [2020-09-25 03:28:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:02,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:28:02,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 03:28:02,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:28:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:28:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:28:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:02,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:02,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:02,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:28:02,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:02,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 03:28:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:02,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:02,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:28:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:02,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364279949] [2020-09-25 03:28:02,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:28:02,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:28:02,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194112481] [2020-09-25 03:28:02,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:28:02,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:02,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:28:02,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:28:02,632 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-25 03:28:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:02,710 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-25 03:28:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:28:02,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-25 03:28:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:02,715 INFO L225 Difference]: With dead ends: 90 [2020-09-25 03:28:02,715 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 03:28:02,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:28:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 03:28:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 03:28:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 03:28:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-25 03:28:02,731 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-25 03:28:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:02,732 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-25 03:28:02,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:28:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-25 03:28:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:28:02,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:02,734 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:02,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:28:02,734 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:02,735 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-25 03:28:02,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:02,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895404228] [2020-09-25 03:28:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:03,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:28:03,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:28:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 03:28:03,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:28:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 03:28:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:28:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:03,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:03,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:03,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:28:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:28:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:03,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:28:03,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:03,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 03:28:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:03,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895404228] [2020-09-25 03:28:03,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:03,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:28:03,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309365708] [2020-09-25 03:28:03,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:28:03,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:03,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:28:03,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:28:03,587 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 8 states. [2020-09-25 03:28:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:03,881 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2020-09-25 03:28:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:28:03,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 03:28:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:03,892 INFO L225 Difference]: With dead ends: 146 [2020-09-25 03:28:03,892 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 03:28:03,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:28:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 03:28:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2020-09-25 03:28:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 03:28:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-09-25 03:28:03,925 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 38 [2020-09-25 03:28:03,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:03,926 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-09-25 03:28:03,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:28:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-09-25 03:28:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:28:03,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:03,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1] [2020-09-25 03:28:03,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:28:03,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:03,931 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-25 03:28:03,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:03,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025598305] [2020-09-25 03:28:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:28:05,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:28:05,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-09-25 03:28:05,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:05,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:28:05,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:28:05,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:05,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:05,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:05,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:05,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025598305] [2020-09-25 03:28:05,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:05,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:05,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703066633] [2020-09-25 03:28:05,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:05,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:05,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:05,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:05,157 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 11 states. [2020-09-25 03:28:05,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:05,684 INFO L93 Difference]: Finished difference Result 185 states and 226 transitions. [2020-09-25 03:28:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:28:05,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-25 03:28:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:05,687 INFO L225 Difference]: With dead ends: 185 [2020-09-25 03:28:05,688 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 03:28:05,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:28:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 03:28:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 155. [2020-09-25 03:28:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 03:28:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 191 transitions. [2020-09-25 03:28:05,713 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 191 transitions. Word has length 38 [2020-09-25 03:28:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:05,714 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 191 transitions. [2020-09-25 03:28:05,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 191 transitions. [2020-09-25 03:28:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 03:28:05,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:05,717 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:05,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:28:05,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:05,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:05,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2102022651, now seen corresponding path program 1 times [2020-09-25 03:28:05,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:05,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708825277] [2020-09-25 03:28:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 03:28:07,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:28:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2025 [2020-09-25 03:28:07,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:28:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:28:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:28:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:07,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:07,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 03:28:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:07,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:07,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:07,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708825277] [2020-09-25 03:28:07,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:07,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:28:07,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238792475] [2020-09-25 03:28:07,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:28:07,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:07,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:28:07,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:28:07,850 INFO L87 Difference]: Start difference. First operand 155 states and 191 transitions. Second operand 8 states. [2020-09-25 03:28:08,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:08,109 INFO L93 Difference]: Finished difference Result 276 states and 335 transitions. [2020-09-25 03:28:08,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:08,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-25 03:28:08,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:08,112 INFO L225 Difference]: With dead ends: 276 [2020-09-25 03:28:08,112 INFO L226 Difference]: Without dead ends: 200 [2020-09-25 03:28:08,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:28:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-25 03:28:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 186. [2020-09-25 03:28:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-25 03:28:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 231 transitions. [2020-09-25 03:28:08,134 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 231 transitions. Word has length 41 [2020-09-25 03:28:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:08,135 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 231 transitions. [2020-09-25 03:28:08,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:28:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 231 transitions. [2020-09-25 03:28:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 03:28:08,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:08,137 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:08,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:28:08,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:08,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:08,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-09-25 03:28:08,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:08,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060921210] [2020-09-25 03:28:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:28:08,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 03:28:08,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:28:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 03:28:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 03:28:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:08,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:08,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:08,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 03:28:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:08,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:28:08,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:28:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:08,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:28:08,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:08,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:28:08,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060921210] [2020-09-25 03:28:08,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:08,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:28:08,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120022310] [2020-09-25 03:28:08,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:28:08,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:08,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:28:08,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:28:08,375 INFO L87 Difference]: Start difference. First operand 186 states and 231 transitions. Second operand 8 states. [2020-09-25 03:28:08,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:08,616 INFO L93 Difference]: Finished difference Result 359 states and 458 transitions. [2020-09-25 03:28:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:28:08,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-25 03:28:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:08,620 INFO L225 Difference]: With dead ends: 359 [2020-09-25 03:28:08,620 INFO L226 Difference]: Without dead ends: 357 [2020-09-25 03:28:08,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:28:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-09-25 03:28:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 250. [2020-09-25 03:28:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-09-25 03:28:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 320 transitions. [2020-09-25 03:28:08,648 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 320 transitions. Word has length 46 [2020-09-25 03:28:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:08,649 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 320 transitions. [2020-09-25 03:28:08,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:28:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 320 transitions. [2020-09-25 03:28:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:28:08,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:08,651 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:08,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:28:08,651 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:08,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1446982975, now seen corresponding path program 2 times [2020-09-25 03:28:08,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:08,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622487726] [2020-09-25 03:28:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:10,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:10,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:28:10,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:28:10,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1952 [2020-09-25 03:28:10,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 03:28:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:28:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:10,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:10,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:10,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:10,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:10,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:28:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:10,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:10,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:10,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:10,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 03:28:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:10,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:10,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:10,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:10,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:10,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:28:10,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622487726] [2020-09-25 03:28:10,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:10,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:28:10,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915380290] [2020-09-25 03:28:10,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:10,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:10,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:10,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:10,732 INFO L87 Difference]: Start difference. First operand 250 states and 320 transitions. Second operand 10 states. [2020-09-25 03:28:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:11,133 INFO L93 Difference]: Finished difference Result 374 states and 475 transitions. [2020-09-25 03:28:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:28:11,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 03:28:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:11,137 INFO L225 Difference]: With dead ends: 374 [2020-09-25 03:28:11,137 INFO L226 Difference]: Without dead ends: 372 [2020-09-25 03:28:11,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:28:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-09-25 03:28:11,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 234. [2020-09-25 03:28:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 03:28:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 299 transitions. [2020-09-25 03:28:11,160 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 299 transitions. Word has length 47 [2020-09-25 03:28:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:11,161 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 299 transitions. [2020-09-25 03:28:11,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 299 transitions. [2020-09-25 03:28:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:28:11,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:11,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:11,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:28:11,163 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1915994087, now seen corresponding path program 1 times [2020-09-25 03:28:11,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:11,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188030621] [2020-09-25 03:28:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:11,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:15,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:15,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 03:28:15,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:28:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4513 [2020-09-25 03:28:15,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:28:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:28:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:28:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:15,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:15,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 03:28:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:15,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:15,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:15,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188030621] [2020-09-25 03:28:15,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:15,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:28:15,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345608151] [2020-09-25 03:28:15,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:28:15,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:15,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:28:15,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:28:15,832 INFO L87 Difference]: Start difference. First operand 234 states and 299 transitions. Second operand 13 states. [2020-09-25 03:28:16,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:16,606 INFO L93 Difference]: Finished difference Result 275 states and 345 transitions. [2020-09-25 03:28:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:28:16,607 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-09-25 03:28:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:16,610 INFO L225 Difference]: With dead ends: 275 [2020-09-25 03:28:16,610 INFO L226 Difference]: Without dead ends: 273 [2020-09-25 03:28:16,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-09-25 03:28:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-25 03:28:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 233. [2020-09-25 03:28:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-25 03:28:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 297 transitions. [2020-09-25 03:28:16,632 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 297 transitions. Word has length 47 [2020-09-25 03:28:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:16,633 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 297 transitions. [2020-09-25 03:28:16,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:28:16,634 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 297 transitions. [2020-09-25 03:28:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 03:28:16,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:16,636 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:16,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:28:16,636 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-25 03:28:16,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:16,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419269806] [2020-09-25 03:28:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 03:28:19,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:28:19,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2591 [2020-09-25 03:28:19,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:28:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 03:28:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:19,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:19,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:28:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:19,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:19,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:28:19,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 03:28:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:19,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:19,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:28:19,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419269806] [2020-09-25 03:28:19,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:19,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:28:19,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636248456] [2020-09-25 03:28:19,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:19,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:19,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:19,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:19,397 INFO L87 Difference]: Start difference. First operand 233 states and 297 transitions. Second operand 10 states. [2020-09-25 03:28:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:19,693 INFO L93 Difference]: Finished difference Result 305 states and 383 transitions. [2020-09-25 03:28:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:28:19,696 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-09-25 03:28:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:19,698 INFO L225 Difference]: With dead ends: 305 [2020-09-25 03:28:19,698 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 03:28:19,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:28:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 03:28:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 88. [2020-09-25 03:28:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 03:28:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-09-25 03:28:19,716 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 50 [2020-09-25 03:28:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:19,717 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-09-25 03:28:19,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-09-25 03:28:19,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:28:19,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:19,719 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:19,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:28:19,720 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:19,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2033926999, now seen corresponding path program 1 times [2020-09-25 03:28:19,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:19,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798234292] [2020-09-25 03:28:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:20,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:28:20,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:28:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-09-25 03:28:20,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:28:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 03:28:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:28:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:20,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:20,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:20,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:20,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:20,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:20,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:20,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 03:28:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:20,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:20,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:20,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:20,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:28:20,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:28:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:20,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:28:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:20,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 03:28:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:20,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:20,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:20,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:20,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:28:20,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:28:20,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798234292] [2020-09-25 03:28:20,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:28:20,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 03:28:20,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961327932] [2020-09-25 03:28:20,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:28:20,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:28:20,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:28:20,686 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 10 states. [2020-09-25 03:28:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:21,009 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-09-25 03:28:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:28:21,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-09-25 03:28:21,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:21,010 INFO L225 Difference]: With dead ends: 106 [2020-09-25 03:28:21,011 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:28:21,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:28:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:28:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:28:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:28:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:28:21,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-25 03:28:21,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:21,015 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:28:21,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:28:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:28:21,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:28:21,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:28:21,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:28:21,792 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-09-25 03:28:21,797 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 03:28:21,798 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:28:21,798 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:28:21,798 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:28:21,798 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:28:21,799 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:28:21,799 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:28:21,799 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:28:21,799 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 03:28:21,799 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 03:28:21,799 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:28:21,799 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-25 03:28:21,800 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-25 03:28:21,800 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 03:28:21,800 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 03:28:21,800 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 03:28:21,801 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-25 03:28:21,802 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 03:28:21,802 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 03:28:21,803 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 03:28:21,803 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 03:28:21,803 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-25 03:28:21,803 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 03:28:21,804 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 03:28:21,804 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 03:28:21,804 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 03:28:21,804 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 03:28:21,804 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 03:28:21,804 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 03:28:21,804 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 03:28:21,805 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse0 (* main_~i~0 2)) (.cse3 (+ (* 2 main_~i~0) 1))) (let ((.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse4 (<= .cse3 main_~k~0)) (.cse5 (<= main_~k~0 main_~n~0)) (.cse2 (= .cse0 main_~j~0))) (or (and (= .cse0 main_~k~0) .cse1 .cse2) (and (<= .cse3 main_~j~0) .cse1 .cse4 .cse5) (and .cse4 .cse5 .cse2)))) [2020-09-25 03:28:21,805 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 03:28:21,805 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 03:28:21,805 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-25 03:28:21,805 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-25 03:28:21,805 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-25 03:28:21,806 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-25 03:28:21,807 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~i~0) 1))) (let ((.cse2 (<= .cse0 main_~k~0)) (.cse1 (<= (+ main_~k~0 1) main_~n~0))) (or (and (<= .cse0 main_~j~0) .cse1 (<= (+ main_~j~0 1) main_~n~0) .cse2) (and (let ((.cse4 (* main_~i~0 2))) (let ((.cse3 (= .cse4 main_~j~0))) (or (and .cse2 .cse3) (and (= .cse4 main_~k~0) .cse3)))) .cse1)))) [2020-09-25 03:28:21,807 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-25 03:28:21,807 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-25 03:28:21,807 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 03:28:21,807 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-25 03:28:21,807 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 03:28:21,807 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-25 03:28:21,808 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-09-25 03:28:21,808 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 03:28:21,808 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 03:28:21,808 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 03:28:21,809 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-25 03:28:21,809 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 03:28:21,809 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 03:28:21,809 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 03:28:21,809 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 03:28:21,809 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 03:28:21,810 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 03:28:21,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:28:21 BoogieIcfgContainer [2020-09-25 03:28:21,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:28:21,845 INFO L168 Benchmark]: Toolchain (without parser) took 21542.92 ms. Allocated memory was 140.5 MB in the beginning and 373.8 MB in the end (delta: 233.3 MB). Free memory was 104.1 MB in the beginning and 143.2 MB in the end (delta: -39.1 MB). Peak memory consumption was 194.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:21,846 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:28:21,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.99 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 94.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:21,854 INFO L168 Benchmark]: Boogie Preprocessor took 107.49 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 182.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:21,856 INFO L168 Benchmark]: RCFGBuilder took 370.14 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 165.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:21,857 INFO L168 Benchmark]: TraceAbstraction took 20752.48 ms. Allocated memory was 202.9 MB in the beginning and 373.8 MB in the end (delta: 170.9 MB). Free memory was 165.0 MB in the beginning and 143.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 192.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:21,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.99 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 94.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.49 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 182.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.14 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 165.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20752.48 ms. Allocated memory was 202.9 MB in the beginning and 373.8 MB in the end (delta: 170.9 MB). Free memory was 165.0 MB in the beginning and 143.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 192.7 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: 22]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((i * 2 == k && j + 1 <= n) && i * 2 == j) || (((2 * i + 1 <= j && j + 1 <= n) && 2 * i + 1 <= k) && k <= n)) || ((2 * i + 1 <= k && k <= n) && i * 2 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.8s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 693 SDtfs, 697 SDslu, 3259 SDs, 0 SdLazy, 1951 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=7, 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, 11 MinimizatonAttempts, 504 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 47 PreInvPairs, 71 NumberOfFragments, 227 HoareAnnotationTreeSize, 47 FomulaSimplifications, 10494 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 12 FomulaSimplificationsInter, 520 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 450 NumberOfCodeBlocks, 450 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 439 ConstructedInterpolants, 0 QuantifiedInterpolants, 53307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 60/91 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...