/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:43:11,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:43:11,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:43:11,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:43:11,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:43:11,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:43:11,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:43:11,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:43:11,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:43:11,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:43:11,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:43:11,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:43:11,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:43:11,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:43:11,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:43:11,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:43:11,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:43:11,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:43:11,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:43:11,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:43:11,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:43:11,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:43:11,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:43:11,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:43:11,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:43:11,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:43:11,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:43:11,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:43:11,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:43:11,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:43:11,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:43:11,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:43:11,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:43:11,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:43:11,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:43:11,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:43:11,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:43:11,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:43:11,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:43:11,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:43:11,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:43:11,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:43:11,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:43:11,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:43:11,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:43:11,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:43:11,933 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:43:11,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:43:11,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:43:11,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:43:11,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:43:11,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:43:11,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:43:11,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:43:11,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:43:11,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:43:11,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:43:11,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:43:11,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:43:11,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:43:11,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:43:11,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:43:11,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:43:11,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:43:11,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:43:11,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:43:11,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:43:11,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:43:11,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:43:11,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:43:11,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:43:11,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:43:12,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:43:12,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:43:12,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:43:12,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:43:12,420 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:43:12,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-24 20:43:12,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/babb3c03e/52271cf0df6d41d6a06094809696d8a7/FLAG06b5be962 [2020-09-24 20:43:13,078 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:43:13,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-24 20:43:13,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/babb3c03e/52271cf0df6d41d6a06094809696d8a7/FLAG06b5be962 [2020-09-24 20:43:13,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/babb3c03e/52271cf0df6d41d6a06094809696d8a7 [2020-09-24 20:43:13,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:43:13,436 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:43:13,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:43:13,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:43:13,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:43:13,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13, skipping insertion in model container [2020-09-24 20:43:13,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:43:13,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:43:13,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:43:13,728 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:43:13,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:43:13,764 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:43:13,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13 WrapperNode [2020-09-24 20:43:13,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:43:13,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:43:13,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:43:13,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:43:13,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (1/1) ... [2020-09-24 20:43:13,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:43:13,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:43:13,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:43:13,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:43:13,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:43:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:43:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:43:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:43:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:43:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:43:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:43:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:43:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:43:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:43:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:43:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:43:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:43:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:43:14,323 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:43:14,323 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 20:43:14,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:43:14 BoogieIcfgContainer [2020-09-24 20:43:14,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:43:14,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:43:14,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:43:14,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:43:14,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:43:13" (1/3) ... [2020-09-24 20:43:14,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5020fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:43:14, skipping insertion in model container [2020-09-24 20:43:14,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:13" (2/3) ... [2020-09-24 20:43:14,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5020fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:43:14, skipping insertion in model container [2020-09-24 20:43:14,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:43:14" (3/3) ... [2020-09-24 20:43:14,339 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-09-24 20:43:14,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:43:14,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:43:14,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:43:14,412 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:43:14,413 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:43:14,413 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:43:14,413 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:43:14,413 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:43:14,413 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:43:14,414 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:43:14,414 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:43:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-09-24 20:43:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:43:14,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:14,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:14,450 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:14,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:14,456 INFO L82 PathProgramCache]: Analyzing trace with hash -980226087, now seen corresponding path program 1 times [2020-09-24 20:43:14,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:14,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862788822] [2020-09-24 20:43:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:15,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:43:15,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:43:15,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-24 20:43:15,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:43:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 20:43:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:43:15,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:43:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:15,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:15,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:43:15,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:15,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:15,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-24 20:43:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:15,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862788822] [2020-09-24 20:43:15,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:15,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:43:15,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463720090] [2020-09-24 20:43:15,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:43:15,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:15,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:43:15,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:43:15,881 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 9 states. [2020-09-24 20:43:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:16,481 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-09-24 20:43:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:43:16,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 20:43:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:16,498 INFO L225 Difference]: With dead ends: 112 [2020-09-24 20:43:16,499 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 20:43:16,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:43:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 20:43:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2020-09-24 20:43:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 20:43:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 20:43:16,566 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 34 [2020-09-24 20:43:16,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:16,567 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 20:43:16,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:43:16,567 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 20:43:16,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 20:43:16,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:16,569 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:16,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:43:16,570 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:16,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1377800797, now seen corresponding path program 1 times [2020-09-24 20:43:16,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:16,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555571170] [2020-09-24 20:43:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:16,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:18,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:43:18,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:43:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1779 [2020-09-24 20:43:18,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:43:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:43:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:43:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:18,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:18,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:43:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:18,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:18,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555571170] [2020-09-24 20:43:18,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:18,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:43:18,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788447903] [2020-09-24 20:43:18,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:43:18,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:18,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:43:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:43:18,500 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 11 states. [2020-09-24 20:43:19,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:19,123 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2020-09-24 20:43:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:43:19,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-24 20:43:19,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:19,126 INFO L225 Difference]: With dead ends: 105 [2020-09-24 20:43:19,126 INFO L226 Difference]: Without dead ends: 103 [2020-09-24 20:43:19,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:43:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-24 20:43:19,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 65. [2020-09-24 20:43:19,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 20:43:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-09-24 20:43:19,141 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 40 [2020-09-24 20:43:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:19,141 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-09-24 20:43:19,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:43:19,142 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-09-24 20:43:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 20:43:19,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:19,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:19,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:43:19,144 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:19,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1348236411, now seen corresponding path program 1 times [2020-09-24 20:43:19,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:19,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725040134] [2020-09-24 20:43:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:19,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:20,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:22,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:24,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:24,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:43:24,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-24 20:43:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:43:24,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:43:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 20:43:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:43:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:24,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:24,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:24,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:43:24,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:24,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:24,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:24,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 20:43:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:24,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:24,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:24,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:24,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:43:24,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:43:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:43:24,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:24,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725040134] [2020-09-24 20:43:24,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:24,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:43:24,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78644568] [2020-09-24 20:43:24,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:43:24,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:43:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:43:24,405 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 14 states. [2020-09-24 20:43:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:25,516 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2020-09-24 20:43:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 20:43:25,516 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-09-24 20:43:25,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:25,521 INFO L225 Difference]: With dead ends: 128 [2020-09-24 20:43:25,521 INFO L226 Difference]: Without dead ends: 126 [2020-09-24 20:43:25,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=1186, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 20:43:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-24 20:43:25,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2020-09-24 20:43:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-24 20:43:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2020-09-24 20:43:25,541 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 49 [2020-09-24 20:43:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:25,541 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2020-09-24 20:43:25,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:43:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2020-09-24 20:43:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 20:43:25,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:25,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:25,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:43:25,547 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:25,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1117939410, now seen corresponding path program 1 times [2020-09-24 20:43:25,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:25,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838962574] [2020-09-24 20:43:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:26,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:26,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:27,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:27,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:27,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:27,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:29,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:30,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:30,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:30,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 20:43:30,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-09-24 20:43:30,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 20:43:30,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:43:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 20:43:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 20:43:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:30,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:30,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:43:30,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:43:30,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:30,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 20:43:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:30,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:30,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:30,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:30,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:30,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:43:30,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:30,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 20:43:30,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838962574] [2020-09-24 20:43:30,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:30,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:43:30,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330166987] [2020-09-24 20:43:30,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:43:30,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:30,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:43:30,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:43:30,785 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand 15 states. [2020-09-24 20:43:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:32,131 INFO L93 Difference]: Finished difference Result 186 states and 223 transitions. [2020-09-24 20:43:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 20:43:32,132 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-09-24 20:43:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:32,137 INFO L225 Difference]: With dead ends: 186 [2020-09-24 20:43:32,137 INFO L226 Difference]: Without dead ends: 184 [2020-09-24 20:43:32,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 20:43:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-09-24 20:43:32,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 150. [2020-09-24 20:43:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-24 20:43:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2020-09-24 20:43:32,181 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 61 [2020-09-24 20:43:32,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:32,181 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2020-09-24 20:43:32,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:43:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2020-09-24 20:43:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 20:43:32,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:32,184 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 20:43:32,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:43:32,185 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:32,185 INFO L82 PathProgramCache]: Analyzing trace with hash -812628281, now seen corresponding path program 2 times [2020-09-24 20:43:32,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:32,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712420837] [2020-09-24 20:43:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:32,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:37,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 20:43:37,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 20:43:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:43:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:43:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 20:43:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:43:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:37,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:37,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:37,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:43:37,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:37,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:43:37,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 20:43:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:37,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:37,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:43:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 20:43:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:37,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:37,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:37,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:43:37,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:43:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:43:37,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712420837] [2020-09-24 20:43:37,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:37,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:43:37,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721284981] [2020-09-24 20:43:37,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:43:37,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:37,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:43:37,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:43:37,452 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand 14 states. [2020-09-24 20:43:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:38,647 INFO L93 Difference]: Finished difference Result 353 states and 441 transitions. [2020-09-24 20:43:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-24 20:43:38,647 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 76 [2020-09-24 20:43:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:38,650 INFO L225 Difference]: With dead ends: 353 [2020-09-24 20:43:38,650 INFO L226 Difference]: Without dead ends: 232 [2020-09-24 20:43:38,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=498, Invalid=1854, Unknown=0, NotChecked=0, Total=2352 [2020-09-24 20:43:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-24 20:43:38,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 177. [2020-09-24 20:43:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-24 20:43:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 212 transitions. [2020-09-24 20:43:38,676 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 212 transitions. Word has length 76 [2020-09-24 20:43:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:38,676 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 212 transitions. [2020-09-24 20:43:38,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:43:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 212 transitions. [2020-09-24 20:43:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 20:43:38,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:38,679 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-09-24 20:43:38,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:43:38,679 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:38,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1807734983, now seen corresponding path program 3 times [2020-09-24 20:43:38,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:38,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841943206] [2020-09-24 20:43:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:43,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:43,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 20:43:43,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:43:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 20:43:43,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:43:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 20:43:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 20:43:43,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:43,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:43,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:43,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:43:43,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:43,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:43,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 20:43:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:43,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:43,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:43,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:43,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:43:43,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:43,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 20:43:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:43,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:43,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:43,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:43,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:43:43,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:43,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 20:43:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:43,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:43,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:43,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:43,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:43:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:43,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 20:43:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:43,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:43,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:43,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:43,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:43,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:43:43,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-24 20:43:43,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841943206] [2020-09-24 20:43:43,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:43,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:43:43,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267131729] [2020-09-24 20:43:43,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:43:43,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:43,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:43:43,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:43:43,920 INFO L87 Difference]: Start difference. First operand 177 states and 212 transitions. Second operand 14 states. [2020-09-24 20:43:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:44,774 INFO L93 Difference]: Finished difference Result 259 states and 310 transitions. [2020-09-24 20:43:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:43:44,775 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-09-24 20:43:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:44,777 INFO L225 Difference]: With dead ends: 259 [2020-09-24 20:43:44,778 INFO L226 Difference]: Without dead ends: 257 [2020-09-24 20:43:44,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:43:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-24 20:43:44,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 215. [2020-09-24 20:43:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-24 20:43:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 260 transitions. [2020-09-24 20:43:44,806 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 260 transitions. Word has length 94 [2020-09-24 20:43:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:44,807 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 260 transitions. [2020-09-24 20:43:44,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:43:44,807 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 260 transitions. [2020-09-24 20:43:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-24 20:43:44,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:44,809 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2020-09-24 20:43:44,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:43:44,810 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash 906407465, now seen corresponding path program 4 times [2020-09-24 20:43:44,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:44,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785014121] [2020-09-24 20:43:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:44,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:45,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:45,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:49,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:49,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 20:43:49,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 20:43:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:43:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:43:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:43:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 20:43:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:50,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:50,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:43:50,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:50,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:50,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 20:43:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:50,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:50,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:50,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:50,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:43:50,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:50,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 20:43:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:50,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:43:50,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 20:43:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:50,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:50,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:50,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:50,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:43:50,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 20:43:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:50,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:50,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:50,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:50,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:43:50,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 20:43:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:50,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:50,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:43:50,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:50,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:43:50,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:50,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:50,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:43:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 79 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-24 20:43:50,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785014121] [2020-09-24 20:43:50,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:50,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:43:50,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861580646] [2020-09-24 20:43:50,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:43:50,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:50,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:43:50,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:43:50,155 INFO L87 Difference]: Start difference. First operand 215 states and 260 transitions. Second operand 17 states. [2020-09-24 20:43:52,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:52,513 INFO L93 Difference]: Finished difference Result 431 states and 536 transitions. [2020-09-24 20:43:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-24 20:43:52,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2020-09-24 20:43:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:52,515 INFO L225 Difference]: With dead ends: 431 [2020-09-24 20:43:52,515 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:43:52,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=819, Invalid=2373, Unknown=0, NotChecked=0, Total=3192 [2020-09-24 20:43:52,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:43:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:43:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:43:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:43:52,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2020-09-24 20:43:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:52,521 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:43:52,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:43:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:43:52,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:43:52,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:43:52,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:43:52,922 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2020-09-24 20:43:53,430 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 97 [2020-09-24 20:43:53,625 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2020-09-24 20:43:54,008 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 36 [2020-09-24 20:43:54,358 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-09-24 20:43:54,470 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 27 [2020-09-24 20:43:54,475 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:43:54,475 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2020-09-24 20:43:54,475 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:43:54,475 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:43:54,476 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:43:54,476 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:43:54,476 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:43:54,476 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:54,476 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:54,476 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 20:43:54,476 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 20:43:54,476 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:54,477 INFO L271 CegarLoopResult]: At program point L27(lines 14 29) the Hoare annotation is: true [2020-09-24 20:43:54,477 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-09-24 20:43:54,477 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-09-24 20:43:54,477 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 20:43:54,477 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:43:54,477 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 20:43:54,478 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 20:43:54,479 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 26) the Hoare annotation is: (or (= main_~i~0 0) (and (<= 1 main_~i~0) (<= main_~i~0 main_~n~0))) [2020-09-24 20:43:54,479 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:43:54,479 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:43:54,479 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 20:43:54,480 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 20:43:54,480 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-24 20:43:54,480 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 20:43:54,480 INFO L268 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-09-24 20:43:54,480 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 20:43:54,480 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-24 20:43:54,481 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 20:43:54,481 INFO L268 CegarLoopResult]: For program point L24-5(line 24) no Hoare annotation was computed. [2020-09-24 20:43:54,481 INFO L264 CegarLoopResult]: At program point L24-6(lines 24 26) the Hoare annotation is: (let ((.cse2 (<= (* 3 main_~i~0) (+ main_~j~0 main_~n~0))) (.cse6 (+ main_~i~0 1))) (let ((.cse1 (<= main_~j~0 (* 2 main_~i~0))) (.cse0 (= main_~i~0 0)) (.cse4 (let ((.cse7 (<= .cse6 main_~n~0))) (or (and (<= 1 main_~n~0) .cse7) (and .cse2 .cse7)))) (.cse5 (<= 1 main_~i~0)) (.cse3 (* 2 main_~n~0))) (or (and .cse0 .cse1 .cse2 (<= (+ main_~i~0 2) .cse3)) (and .cse4 .cse5 .cse1) (and .cse4 .cse0 (<= main_~j~0 .cse6) (<= main_~k~0 main_~i~0)) (and .cse4 .cse5 (<= (+ main_~k~0 3) (+ main_~i~0 .cse3)))))) [2020-09-24 20:43:54,481 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:43:54,481 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 20:43:54,481 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 20:43:54,482 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:43:54,482 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 20:43:54,482 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 20:43:54,482 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-24 20:43:54,482 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 20:43:54,482 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 26) the Hoare annotation is: (let ((.cse7 (+ main_~i~0 (* 2 main_~n~0)))) (let ((.cse0 (<= 1 main_~i~0)) (.cse2 (<= main_~j~0 main_~k~0)) (.cse4 (<= (+ main_~j~0 1) (* 3 main_~i~0))) (.cse3 (<= (+ main_~i~0 main_~k~0 1) (+ main_~j~0 main_~n~0))) (.cse6 (<= 2 main_~i~0)) (.cse5 (<= (+ main_~i~0 1) main_~n~0)) (.cse8 (<= (+ main_~j~0 3) .cse7)) (.cse1 (<= main_~k~0 main_~i~0))) (or (and (<= main_~j~0 (+ main_~k~0 1)) .cse0 (<= 2 main_~n~0) .cse1 (<= main_~i~0 1)) (and .cse0 .cse2 .cse3 .cse4) (and (= main_~i~0 0) .cse2 .cse4 .cse5 .cse1) (and .cse6 .cse3 .cse5 (<= (+ main_~k~0 3) .cse7) .cse8) (and .cse6 .cse5 .cse8 .cse1)))) [2020-09-24 20:43:54,482 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 20:43:54,483 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 20:43:54,483 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 20:43:54,483 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-09-24 20:43:54,483 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: true [2020-09-24 20:43:54,483 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse1 (<= (+ main_~i~0 main_~k~0 2) (+ main_~j~0 main_~n~0)))) (or (let ((.cse0 (+ main_~i~0 (* 2 main_~n~0)))) (and (<= (+ main_~k~0 4) .cse0) (<= 2 main_~i~0) .cse1 (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) .cse0))) (and (<= main_~j~0 (+ main_~k~0 1)) (<= 1 main_~i~0) .cse1 (<= main_~k~0 main_~i~0)))) [2020-09-24 20:43:54,483 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 26) no Hoare annotation was computed. [2020-09-24 20:43:54,484 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 20:43:54,484 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 20:43:54,484 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 20:43:54,484 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 20:43:54,484 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 20:43:54,484 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 20:43:54,485 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 20:43:54,485 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 20:43:54,485 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 20:43:54,485 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 20:43:54,486 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 20:43:54,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:43:54 BoogieIcfgContainer [2020-09-24 20:43:54,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:43:54,541 INFO L168 Benchmark]: Toolchain (without parser) took 41104.93 ms. Allocated memory was 140.0 MB in the beginning and 413.1 MB in the end (delta: 273.2 MB). Free memory was 103.3 MB in the beginning and 143.3 MB in the end (delta: -39.9 MB). Peak memory consumption was 233.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:54,543 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 20:43:54,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.89 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:54,546 INFO L168 Benchmark]: Boogie Preprocessor took 115.83 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 181.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:54,546 INFO L168 Benchmark]: RCFGBuilder took 447.65 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 164.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:54,550 INFO L168 Benchmark]: TraceAbstraction took 40203.34 ms. Allocated memory was 202.4 MB in the beginning and 413.1 MB in the end (delta: 210.8 MB). Free memory was 163.4 MB in the beginning and 143.3 MB in the end (delta: 20.1 MB). Peak memory consumption was 230.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:54,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.89 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.83 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 181.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.65 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 164.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40203.34 ms. Allocated memory was 202.4 MB in the beginning and 413.1 MB in the end (delta: 210.8 MB). Free memory was 163.4 MB in the beginning and 143.3 MB in the end (delta: 20.1 MB). Peak memory consumption was 230.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((i == 0 && j <= 2 * i) && 3 * i <= j + n) && i + 2 <= 2 * n) || ((((1 <= n && i + 1 <= n) || (3 * i <= j + n && i + 1 <= n)) && 1 <= i) && j <= 2 * i)) || (((((1 <= n && i + 1 <= n) || (3 * i <= j + n && i + 1 <= n)) && i == 0) && j <= i + 1) && k <= i)) || ((((1 <= n && i + 1 <= n) || (3 * i <= j + n && i + 1 <= n)) && 1 <= i) && k + 3 <= i + 2 * n) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: i == 0 || (1 <= i && i <= n) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((j <= k + 1 && 1 <= i) && 2 <= n) && k <= i) && i <= 1) || (((1 <= i && j <= k) && i + k + 1 <= j + n) && j + 1 <= 3 * i)) || ((((i == 0 && j <= k) && j + 1 <= 3 * i) && i + 1 <= n) && k <= i)) || ((((2 <= i && i + k + 1 <= j + n) && i + 1 <= n) && k + 3 <= i + 2 * n) && j + 3 <= i + 2 * n)) || (((2 <= i && i + 1 <= n) && j + 3 <= i + 2 * n) && k <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 38.1s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 293 SDtfs, 1178 SDslu, 482 SDs, 0 SdLazy, 4129 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 302 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2086 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 213 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 68 PreInvPairs, 160 NumberOfFragments, 321 HoareAnnotationTreeSize, 68 FomulaSimplifications, 33682 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 5402 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 29.3s InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 98550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 173/335 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...