/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gr2006.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:08:19,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:08:19,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:08:19,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:08:19,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:08:19,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:08:19,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:08:19,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:08:19,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:08:19,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:08:19,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:08:19,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:08:19,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:08:19,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:08:19,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:08:19,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:08:19,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:08:19,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:08:19,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:08:19,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:08:19,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:08:19,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:08:19,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:08:19,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:08:19,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:08:19,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:08:19,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:08:19,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:08:19,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:08:19,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:08:19,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:08:19,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:08:19,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:08:19,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:08:19,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:08:19,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:08:19,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:08:19,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:08:19,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:08:19,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:08:19,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:08:19,893 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 [2020-10-12 16:08:19,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:08:19,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:08:19,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:08:19,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:08:19,918 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:08:19,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:08:19,918 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:08:19,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:08:19,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:08:19,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:08:19,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:08:19,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:08:19,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:08:19,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:08:19,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:08:19,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:08:19,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:08:19,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:08:19,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:08:19,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:08:19,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:08:19,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:08:19,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:08:19,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:08:19,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:08:19,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:08:19,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:08:19,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:08:19,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:08:19,923 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-12 16:08:20,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:08:20,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:08:20,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:08:20,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:08:20,251 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:08:20,252 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gr2006.i [2020-10-12 16:08:20,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bf7ce9f1/df8c4cea99bd4cd783ba0188fe23f4a1/FLAGdee8c7091 [2020-10-12 16:08:20,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:08:20,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gr2006.i [2020-10-12 16:08:20,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bf7ce9f1/df8c4cea99bd4cd783ba0188fe23f4a1/FLAGdee8c7091 [2020-10-12 16:08:21,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bf7ce9f1/df8c4cea99bd4cd783ba0188fe23f4a1 [2020-10-12 16:08:21,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:08:21,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:08:21,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:08:21,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:08:21,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:08:21,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c46e88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21, skipping insertion in model container [2020-10-12 16:08:21,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:08:21,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:08:21,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:08:21,493 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:08:21,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:08:21,520 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:08:21,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21 WrapperNode [2020-10-12 16:08:21,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:08:21,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:08:21,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:08:21,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:08:21,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (1/1) ... [2020-10-12 16:08:21,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:08:21,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:08:21,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:08:21,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:08:21,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (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 [2020-10-12 16:08:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:08:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:08:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:08:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:08:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:08:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:08:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:08:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:08:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:08:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:08:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:08:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:08:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:08:21,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:08:21,891 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:08:21,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:08:21 BoogieIcfgContainer [2020-10-12 16:08:21,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:08:21,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:08:21,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:08:21,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:08:21,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:08:21" (1/3) ... [2020-10-12 16:08:21,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aed4867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:08:21, skipping insertion in model container [2020-10-12 16:08:21,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:21" (2/3) ... [2020-10-12 16:08:21,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aed4867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:08:21, skipping insertion in model container [2020-10-12 16:08:21,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:08:21" (3/3) ... [2020-10-12 16:08:21,905 INFO L109 eAbstractionObserver]: Analyzing ICFG gr2006.i [2020-10-12 16:08:21,916 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:08:21,923 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:08:21,938 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:08:21,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:08:21,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:08:21,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:08:21,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:08:21,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:08:21,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:08:21,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:08:21,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:08:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-12 16:08:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 16:08:21,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:21,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:21,985 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:21,991 INFO L82 PathProgramCache]: Analyzing trace with hash -766562631, now seen corresponding path program 1 times [2020-10-12 16:08:21,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:21,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33493385] [2020-10-12 16:08:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:22,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:08:22,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:22,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 16:08:22,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:22,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:08:22,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:08:22,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:22,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:22,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:08:22,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:08:22,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33493385] [2020-10-12 16:08:22,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:08:22,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-12 16:08:22,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680141719] [2020-10-12 16:08:22,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-12 16:08:22,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:22,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-12 16:08:22,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 16:08:22,187 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-12 16:08:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:22,207 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-10-12 16:08:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-12 16:08:22,208 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-12 16:08:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:22,215 INFO L225 Difference]: With dead ends: 32 [2020-10-12 16:08:22,215 INFO L226 Difference]: Without dead ends: 13 [2020-10-12 16:08:22,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 16:08:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-12 16:08:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-12 16:08:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-12 16:08:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-10-12 16:08:22,252 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-10-12 16:08:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:22,252 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-10-12 16:08:22,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-12 16:08:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-10-12 16:08:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:08:22,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:22,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:22,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:08:22,255 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:22,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:22,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1746758926, now seen corresponding path program 1 times [2020-10-12 16:08:22,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:22,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569004642] [2020-10-12 16:08:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:08:22,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 16:08:22,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:08:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:22,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 16:08:22,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:22,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:22,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:08:22,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:22,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:08:22,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569004642] [2020-10-12 16:08:22,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:08:22,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 16:08:22,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891563235] [2020-10-12 16:08:22,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 16:08:22,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:22,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 16:08:22,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:08:22,399 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2020-10-12 16:08:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:22,448 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-12 16:08:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 16:08:22,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-12 16:08:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:22,450 INFO L225 Difference]: With dead ends: 22 [2020-10-12 16:08:22,450 INFO L226 Difference]: Without dead ends: 17 [2020-10-12 16:08:22,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:08:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-12 16:08:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-12 16:08:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-12 16:08:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-12 16:08:22,459 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-10-12 16:08:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:22,460 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-12 16:08:22,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 16:08:22,461 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-12 16:08:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:08:22,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:22,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:22,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:08:22,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:22,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1689500624, now seen corresponding path program 1 times [2020-10-12 16:08:22,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:22,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408270548] [2020-10-12 16:08:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:22,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:08:22,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 16:08:22,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:08:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:08:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:22,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:22,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:22,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:08:22,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:08:22,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408270548] [2020-10-12 16:08:22,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:08:22,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 16:08:22,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114312334] [2020-10-12 16:08:22,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 16:08:22,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:22,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 16:08:22,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:08:22,549 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-10-12 16:08:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:22,568 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-10-12 16:08:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 16:08:22,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-12 16:08:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:22,570 INFO L225 Difference]: With dead ends: 32 [2020-10-12 16:08:22,570 INFO L226 Difference]: Without dead ends: 20 [2020-10-12 16:08:22,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:08:22,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-12 16:08:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-12 16:08:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-12 16:08:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-12 16:08:22,578 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2020-10-12 16:08:22,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:22,578 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-12 16:08:22,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 16:08:22,578 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-12 16:08:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 16:08:22,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:22,580 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:22,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:08:22,580 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:22,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2035029074, now seen corresponding path program 1 times [2020-10-12 16:08:22,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:22,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163155598] [2020-10-12 16:08:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:22,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 16:08:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:08:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 16:08:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:08:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:08:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:22,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:22,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:22,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:08:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:08:22,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163155598] [2020-10-12 16:08:22,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:22,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:08:22,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881031135] [2020-10-12 16:08:22,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:08:22,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:22,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:08:22,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:08:22,864 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-10-12 16:08:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:22,903 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-10-12 16:08:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:08:22,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-12 16:08:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:22,905 INFO L225 Difference]: With dead ends: 38 [2020-10-12 16:08:22,906 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 16:08:22,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:08:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 16:08:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-12 16:08:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-12 16:08:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-12 16:08:22,913 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 18 [2020-10-12 16:08:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:22,914 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-12 16:08:22,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:08:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-12 16:08:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 16:08:22,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:22,918 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:22,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:08:22,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:22,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash -15929742, now seen corresponding path program 2 times [2020-10-12 16:08:22,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:22,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676534288] [2020-10-12 16:08:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:22,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:23,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:23,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 16:08:23,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:08:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-12 16:08:23,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:08:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:08:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:23,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:23,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:08:23,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 16:08:23,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676534288] [2020-10-12 16:08:23,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:23,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 16:08:23,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959643193] [2020-10-12 16:08:23,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:08:23,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:23,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:08:23,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:08:23,438 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-10-12 16:08:23,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:23,485 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-12 16:08:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:08:23,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-12 16:08:23,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:23,489 INFO L225 Difference]: With dead ends: 44 [2020-10-12 16:08:23,490 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 16:08:23,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:08:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 16:08:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-10-12 16:08:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 16:08:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 16:08:23,504 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2020-10-12 16:08:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:23,504 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 16:08:23,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:08:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 16:08:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 16:08:23,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:23,506 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:23,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:08:23,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:23,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1557934126, now seen corresponding path program 3 times [2020-10-12 16:08:23,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:23,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616899783] [2020-10-12 16:08:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:23,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:23,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:08:23,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:08:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-12 16:08:23,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:08:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 16:08:23,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:24,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:24,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:24,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:24,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:08:24,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:24,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:24,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:08:24,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616899783] [2020-10-12 16:08:24,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:24,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 16:08:24,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846313333] [2020-10-12 16:08:24,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:08:24,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:24,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:08:24,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:08:24,010 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 9 states. [2020-10-12 16:08:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:24,075 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-10-12 16:08:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:08:24,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-12 16:08:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:24,077 INFO L225 Difference]: With dead ends: 62 [2020-10-12 16:08:24,078 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 16:08:24,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:08:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 16:08:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 16:08:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 16:08:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 16:08:24,087 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 30 [2020-10-12 16:08:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:24,087 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 16:08:24,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:08:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 16:08:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 16:08:24,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:24,089 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:24,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:08:24,090 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:24,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1327041554, now seen corresponding path program 4 times [2020-10-12 16:08:24,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:24,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520081367] [2020-10-12 16:08:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:24,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 16:08:26,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:08:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2639 [2020-10-12 16:08:26,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 16:08:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:08:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:26,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:26,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:26,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:26,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:26,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:26,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:08:26,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:26,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:26,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:26,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 121 proven. 34 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 16:08:26,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520081367] [2020-10-12 16:08:26,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:26,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 16:08:26,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138361797] [2020-10-12 16:08:26,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:08:26,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:26,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:08:26,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:08:26,854 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 10 states. [2020-10-12 16:08:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:26,939 INFO L93 Difference]: Finished difference Result 100 states and 123 transitions. [2020-10-12 16:08:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:08:26,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-12 16:08:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:26,941 INFO L225 Difference]: With dead ends: 100 [2020-10-12 16:08:26,941 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 16:08:26,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:08:26,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 16:08:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 55. [2020-10-12 16:08:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 16:08:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-12 16:08:26,953 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 42 [2020-10-12 16:08:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:26,953 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-12 16:08:26,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:08:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-12 16:08:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 16:08:26,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:26,955 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:26,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:08:26,956 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:26,956 INFO L82 PathProgramCache]: Analyzing trace with hash 382785234, now seen corresponding path program 5 times [2020-10-12 16:08:26,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:26,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826996112] [2020-10-12 16:08:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:27,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:27,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:29,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:29,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 16:08:29,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:08:29,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2889 [2020-10-12 16:08:29,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 16:08:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 16:08:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:30,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:30,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:30,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:30,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:08:30,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 14 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:08:30,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826996112] [2020-10-12 16:08:30,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:30,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 16:08:30,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186581472] [2020-10-12 16:08:30,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 16:08:30,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:30,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 16:08:30,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:08:30,102 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 17 states. [2020-10-12 16:08:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:30,186 INFO L93 Difference]: Finished difference Result 110 states and 134 transitions. [2020-10-12 16:08:30,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 16:08:30,187 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-12 16:08:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:30,188 INFO L225 Difference]: With dead ends: 110 [2020-10-12 16:08:30,188 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 16:08:30,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:08:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 16:08:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 16:08:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 16:08:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2020-10-12 16:08:30,200 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 54 [2020-10-12 16:08:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:30,200 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2020-10-12 16:08:30,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 16:08:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2020-10-12 16:08:30,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 16:08:30,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:30,203 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 15, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:30,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:08:30,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:30,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:30,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1495175342, now seen corresponding path program 6 times [2020-10-12 16:08:30,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:30,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212413135] [2020-10-12 16:08:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:30,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:30,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:30,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:32,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:35,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 16:08:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 16:08:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 16:08:35,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 16:08:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 16:08:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:35,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:35,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:08:35,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 575 proven. 162 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 16:08:35,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212413135] [2020-10-12 16:08:35,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:35,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 16:08:35,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357013380] [2020-10-12 16:08:35,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 16:08:35,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:35,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 16:08:35,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-12 16:08:35,490 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 18 states. [2020-10-12 16:08:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:35,670 INFO L93 Difference]: Finished difference Result 284 states and 363 transitions. [2020-10-12 16:08:35,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 16:08:35,671 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-10-12 16:08:35,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:35,674 INFO L225 Difference]: With dead ends: 284 [2020-10-12 16:08:35,674 INFO L226 Difference]: Without dead ends: 279 [2020-10-12 16:08:35,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-12 16:08:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-12 16:08:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 103. [2020-10-12 16:08:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 16:08:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2020-10-12 16:08:35,689 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 78 [2020-10-12 16:08:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:35,690 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2020-10-12 16:08:35,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 16:08:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2020-10-12 16:08:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 16:08:35,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:35,692 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:35,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:08:35,692 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:35,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:35,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2096028462, now seen corresponding path program 7 times [2020-10-12 16:08:35,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:35,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703253958] [2020-10-12 16:08:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:35,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:35,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:36,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:38,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:40,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 16:08:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 16:08:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 16:08:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 16:08:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 16:08:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:08:41,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:41,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:41,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:41,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:41,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:41,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:08:41,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:41,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:41,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:41,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:41,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 200 proven. 1190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 16:08:41,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703253958] [2020-10-12 16:08:41,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:41,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 16:08:41,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016547054] [2020-10-12 16:08:41,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 16:08:41,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:41,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 16:08:41,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-12 16:08:41,372 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 31 states. [2020-10-12 16:08:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:41,507 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-10-12 16:08:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 16:08:41,508 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 102 [2020-10-12 16:08:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:41,509 INFO L225 Difference]: With dead ends: 200 [2020-10-12 16:08:41,509 INFO L226 Difference]: Without dead ends: 146 [2020-10-12 16:08:41,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-12 16:08:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-12 16:08:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-12 16:08:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-12 16:08:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2020-10-12 16:08:41,524 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 102 [2020-10-12 16:08:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:41,524 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2020-10-12 16:08:41,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 16:08:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2020-10-12 16:08:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 16:08:41,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:41,527 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 29, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:41,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 16:08:41,527 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:41,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:41,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1549530034, now seen corresponding path program 8 times [2020-10-12 16:08:41,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:41,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610386826] [2020-10-12 16:08:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:43,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:45,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:46,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:46,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 16:08:46,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 16:08:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 16:08:46,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-12 16:08:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 16:08:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:47,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:47,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:47,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:08:47,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 416 proven. 2542 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 16:08:47,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610386826] [2020-10-12 16:08:47,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:47,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-12 16:08:47,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2362889] [2020-10-12 16:08:47,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-12 16:08:47,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:47,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-12 16:08:47,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 16:08:47,704 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 44 states. [2020-10-12 16:08:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:47,939 INFO L93 Difference]: Finished difference Result 239 states and 284 transitions. [2020-10-12 16:08:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-12 16:08:47,949 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 144 [2020-10-12 16:08:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:47,950 INFO L225 Difference]: With dead ends: 239 [2020-10-12 16:08:47,950 INFO L226 Difference]: Without dead ends: 185 [2020-10-12 16:08:47,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 16:08:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-12 16:08:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2020-10-12 16:08:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-12 16:08:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 200 transitions. [2020-10-12 16:08:47,973 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 200 transitions. Word has length 144 [2020-10-12 16:08:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:47,973 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 200 transitions. [2020-10-12 16:08:47,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-12 16:08:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 200 transitions. [2020-10-12 16:08:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-12 16:08:47,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:47,976 INFO L422 BasicCegarLoop]: trace histogram [58, 57, 42, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:47,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 16:08:47,977 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:47,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1655291053, now seen corresponding path program 9 times [2020-10-12 16:08:47,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:47,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933083267] [2020-10-12 16:08:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:48,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:49,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:51,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:53,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:53,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 16:08:53,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:08:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 16:08:53,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-12 16:08:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:08:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 16:08:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:54,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:54,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:08:54,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:54,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:08:54,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:54,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:08:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 1241 proven. 3626 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-12 16:08:54,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933083267] [2020-10-12 16:08:54,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:08:54,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-12 16:08:54,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675838646] [2020-10-12 16:08:54,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-12 16:08:54,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:54,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-12 16:08:54,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-12 16:08:54,729 INFO L87 Difference]: Start difference. First operand 184 states and 200 transitions. Second operand 52 states. [2020-10-12 16:08:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:55,059 INFO L93 Difference]: Finished difference Result 276 states and 316 transitions. [2020-10-12 16:08:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-12 16:08:55,060 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 183 [2020-10-12 16:08:55,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:55,062 INFO L225 Difference]: With dead ends: 276 [2020-10-12 16:08:55,062 INFO L226 Difference]: Without dead ends: 222 [2020-10-12 16:08:55,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-12 16:08:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-12 16:08:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 208. [2020-10-12 16:08:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-12 16:08:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 224 transitions. [2020-10-12 16:08:55,080 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 224 transitions. Word has length 183 [2020-10-12 16:08:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:55,081 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 224 transitions. [2020-10-12 16:08:55,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-12 16:08:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 224 transitions. [2020-10-12 16:08:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-12 16:08:55,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:55,086 INFO L422 BasicCegarLoop]: trace histogram [66, 65, 50, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:55,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 16:08:55,087 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1437873197, now seen corresponding path program 10 times [2020-10-12 16:08:55,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:55,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552303780] [2020-10-12 16:08:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:55,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:09:00,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:09:00,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 16:09:00,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-12 16:09:00,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 16:09:00,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:09:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-12 16:09:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:09:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 16:09:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:09:01,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:09:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:09:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:09:01,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:09:01,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:09:01,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:09:01,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:09:01,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:09:01,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:09:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:09:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:09:01,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:09:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6435 backedges. 5683 proven. 706 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-12 16:09:01,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552303780] [2020-10-12 16:09:01,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:09:01,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-12 16:09:01,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098590832] [2020-10-12 16:09:01,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-12 16:09:01,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:09:01,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-12 16:09:01,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 16:09:01,908 INFO L87 Difference]: Start difference. First operand 208 states and 224 transitions. Second operand 53 states. [2020-10-12 16:09:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:09:02,906 INFO L93 Difference]: Finished difference Result 1928 states and 2538 transitions. [2020-10-12 16:09:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-12 16:09:02,906 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 207 [2020-10-12 16:09:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:09:02,919 INFO L225 Difference]: With dead ends: 1928 [2020-10-12 16:09:02,919 INFO L226 Difference]: Without dead ends: 1923 [2020-10-12 16:09:02,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 16:09:02,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2020-10-12 16:09:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 313. [2020-10-12 16:09:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 16:09:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 364 transitions. [2020-10-12 16:09:02,983 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 364 transitions. Word has length 207 [2020-10-12 16:09:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:09:02,984 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 364 transitions. [2020-10-12 16:09:02,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-12 16:09:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 364 transitions. [2020-10-12 16:09:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 16:09:02,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:09:02,990 INFO L422 BasicCegarLoop]: trace histogram [101, 100, 51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:09:02,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 16:09:02,991 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:09:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:09:02,992 INFO L82 PathProgramCache]: Analyzing trace with hash 639234352, now seen corresponding path program 11 times [2020-10-12 16:09:02,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:09:02,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936419465] [2020-10-12 16:09:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:09:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:09:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:09:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:09:08,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:09:08,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 16:09:08,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:09:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 16:09:08,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:09:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 104 [2020-10-12 16:09:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:09:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-12 16:09:08,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:09:15,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:09:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:09:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:09:15,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:09:15,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:09:15,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:09:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:09:15,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:09:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:09:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:09:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:09:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:09:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:09:15,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936419465] [2020-10-12 16:09:15,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:09:15,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2020-10-12 16:09:15,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923468465] [2020-10-12 16:09:15,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-10-12 16:09:15,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:09:15,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-10-12 16:09:15,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2020-10-12 16:09:15,691 INFO L87 Difference]: Start difference. First operand 313 states and 364 transitions. Second operand 105 states. [2020-10-12 16:09:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:09:28,058 INFO L93 Difference]: Finished difference Result 629 states and 783 transitions. [2020-10-12 16:09:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-12 16:09:28,058 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 312 [2020-10-12 16:09:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:09:28,061 INFO L225 Difference]: With dead ends: 629 [2020-10-12 16:09:28,061 INFO L226 Difference]: Without dead ends: 467 [2020-10-12 16:09:28,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=211, Invalid=10919, Unknown=0, NotChecked=0, Total=11130 [2020-10-12 16:09:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-12 16:09:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 466. [2020-10-12 16:09:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-12 16:09:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 517 transitions. [2020-10-12 16:09:28,114 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 517 transitions. Word has length 312 [2020-10-12 16:09:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:09:28,114 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 517 transitions. [2020-10-12 16:09:28,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-10-12 16:09:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 517 transitions. [2020-10-12 16:09:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-12 16:09:28,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:09:28,119 INFO L422 BasicCegarLoop]: trace histogram [102, 101, 52, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:09:28,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 16:09:28,119 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:09:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:09:28,120 INFO L82 PathProgramCache]: Analyzing trace with hash -869531539, now seen corresponding path program 12 times [2020-10-12 16:09:28,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:09:28,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545715620] [2020-10-12 16:09:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:09:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:09:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:09:33,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:09:33,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-12 16:09:33,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:09:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 16:09:33,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:09:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 103 [2020-10-12 16:09:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:09:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-12 16:09:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:09:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:09:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:09:34,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:09:34,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:09:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:09:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:09:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:09:34,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:09:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:09:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:09:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:09:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:09:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-12 16:09:34,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545715620] [2020-10-12 16:09:34,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:09:34,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-12 16:09:34,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149516857] [2020-10-12 16:09:34,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-12 16:09:34,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:09:34,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-12 16:09:34,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-12 16:09:34,968 INFO L87 Difference]: Start difference. First operand 466 states and 517 transitions. Second operand 54 states. [2020-10-12 16:09:35,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:09:35,818 INFO L93 Difference]: Finished difference Result 467 states and 518 transitions. [2020-10-12 16:09:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-12 16:09:35,821 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 315 [2020-10-12 16:09:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:09:35,823 INFO L225 Difference]: With dead ends: 467 [2020-10-12 16:09:35,823 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:09:35,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-12 16:09:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:09:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:09:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:09:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:09:35,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 315 [2020-10-12 16:09:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:09:35,827 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:09:35,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-12 16:09:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:09:35,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:09:35,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 16:09:35,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:09:38,674 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 1231 DAG size of output: 907 [2020-10-12 16:09:45,339 WARN L193 SmtUtils]: Spent 6.64 s on a formula simplification. DAG size of input: 906 DAG size of output: 509 [2020-10-12 16:09:45,345 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 16:09:45,345 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:09:45,345 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:09:45,345 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:09:45,345 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:09:45,346 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 28) the Hoare annotation is: true [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 28) no Hoare annotation was computed. [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-10-12 16:09:45,346 INFO L268 CegarLoopResult]: For program point L18-2(lines 17 25) no Hoare annotation was computed. [2020-10-12 16:09:45,347 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 25) the Hoare annotation is: (let ((.cse32 (<= 1 main_~y~0)) (.cse33 (<= main_~y~0 1)) (.cse28 (<= 45 main_~y~0)) (.cse29 (<= main_~y~0 45)) (.cse2 (<= 23 main_~y~0)) (.cse3 (<= main_~y~0 23)) (.cse0 (<= 11 main_~y~0)) (.cse1 (<= main_~y~0 11)) (.cse16 (<= main_~y~0 19)) (.cse17 (<= 19 main_~y~0)) (.cse54 (<= 25 main_~y~0)) (.cse55 (<= main_~y~0 25)) (.cse34 (<= main_~y~0 27)) (.cse35 (<= 27 main_~y~0)) (.cse14 (<= 28 main_~y~0)) (.cse15 (<= main_~y~0 28)) (.cse58 (<= main_~y~0 20)) (.cse59 (<= 20 main_~y~0)) (.cse50 (<= 16 main_~y~0)) (.cse51 (<= main_~y~0 16)) (.cse46 (<= main_~y~0 22)) (.cse47 (<= 22 main_~y~0)) (.cse30 (<= 2 main_~y~0)) (.cse31 (<= main_~y~0 2)) (.cse26 (<= 17 main_~y~0)) (.cse27 (<= main_~y~0 17)) (.cse18 (<= main_~y~0 10)) (.cse19 (<= 10 main_~y~0)) (.cse62 (<= main_~y~0 3)) (.cse63 (<= 3 main_~y~0)) (.cse70 (<= 35 main_~y~0)) (.cse71 (<= main_~y~0 35)) (.cse36 (<= 26 main_~y~0)) (.cse37 (<= main_~y~0 26)) (.cse22 (<= 38 main_~y~0)) (.cse23 (<= main_~y~0 38)) (.cse72 (<= 7 main_~y~0)) (.cse73 (<= main_~y~0 7)) (.cse6 (<= main_~y~0 39)) (.cse7 (<= 39 main_~y~0)) (.cse20 (<= main_~y~0 48)) (.cse21 (<= 48 main_~y~0)) (.cse48 (<= 32 main_~y~0)) (.cse49 (<= main_~y~0 32)) (.cse64 (<= 42 main_~y~0)) (.cse65 (<= main_~y~0 42)) (.cse56 (<= main_~y~0 44)) (.cse57 (<= 44 main_~y~0)) (.cse44 (<= main_~y~0 24)) (.cse45 (<= 24 main_~y~0)) (.cse86 (<= 5 main_~y~0)) (.cse87 (<= main_~y~0 5)) (.cse69 (<= 33 main_~y~0)) (.cse68 (<= main_~y~0 33)) (.cse78 (<= main_~y~0 34)) (.cse79 (<= 34 main_~y~0)) (.cse94 (<= 9 main_~y~0)) (.cse95 (<= main_~y~0 9)) (.cse76 (<= main_~y~0 15)) (.cse77 (<= 15 main_~y~0)) (.cse42 (<= main_~y~0 31)) (.cse43 (<= 31 main_~y~0)) (.cse92 (<= 13 main_~y~0)) (.cse93 (<= main_~y~0 13)) (.cse40 (<= main_~y~0 0)) (.cse41 (<= 0 main_~y~0)) (.cse74 (<= 14 main_~y~0)) (.cse75 (<= main_~y~0 14)) (.cse84 (<= main_~y~0 6)) (.cse85 (<= 6 main_~y~0)) (.cse12 (<= 49 main_~y~0)) (.cse13 (<= main_~y~0 49)) (.cse88 (<= 43 main_~y~0)) (.cse89 (<= main_~y~0 43)) (.cse60 (<= 40 main_~y~0)) (.cse61 (<= main_~y~0 40)) (.cse24 (<= 41 main_~y~0)) (.cse25 (<= main_~y~0 41)) (.cse90 (<= 8 main_~y~0)) (.cse91 (<= main_~y~0 8)) (.cse82 (<= 29 main_~y~0)) (.cse83 (<= main_~y~0 29)) (.cse96 (<= main_~y~0 37)) (.cse97 (<= 37 main_~y~0)) (.cse52 (<= main_~y~0 18)) (.cse53 (<= 18 main_~y~0)) (.cse80 (<= main_~y~0 12)) (.cse81 (<= 12 main_~y~0)) (.cse10 (<= main_~y~0 4)) (.cse11 (<= 4 main_~y~0)) (.cse4 (<= main_~y~0 46)) (.cse5 (<= 46 main_~y~0)) (.cse66 (<= main_~y~0 21)) (.cse67 (<= 21 main_~y~0)) (.cse98 (<= 47 main_~y~0)) (.cse99 (<= main_~y~0 47)) (.cse8 (<= 36 main_~y~0)) (.cse9 (<= main_~y~0 36)) (.cse38 (<= 30 main_~y~0)) (.cse39 (<= main_~y~0 30))) (or (and .cse0 .cse1 (<= 89 main_~x~0) (<= main_~x~0 89)) (and (<= main_~x~0 23) .cse2 (<= 23 main_~x~0) .cse3) (and .cse4 (<= 54 main_~x~0) .cse5 (<= main_~x~0 54)) (and (<= main_~x~0 61) .cse6 .cse7 (<= 61 main_~x~0)) (and (<= main_~x~0 36) (<= 36 main_~x~0) .cse8 .cse9) (and .cse10 (<= 4 main_~x~0) .cse11 (<= main_~x~0 4)) (and .cse12 (<= main_~x~0 49) .cse13 (<= 49 main_~x~0)) (and .cse14 (<= main_~x~0 28) (<= 28 main_~x~0) .cse15) (and (<= main_~x~0 81) .cse16 .cse17 (<= 81 main_~x~0)) (and .cse18 (<= 10 main_~x~0) (<= main_~x~0 10) .cse19) (and .cse20 .cse21 (<= 48 main_~x~0) (<= main_~x~0 48)) (and (<= 38 main_~x~0) (<= main_~x~0 38) .cse22 .cse23) (and .cse24 (<= 41 main_~x~0) (<= main_~x~0 41) .cse25) (and (<= main_~x~0 83) .cse26 (<= 83 main_~x~0) .cse27) (and .cse28 .cse29 (<= 45 main_~x~0) (<= main_~x~0 45)) (and (<= 98 main_~x~0) .cse30 (<= main_~x~0 98) .cse31) (and (<= 1 main_~x~0) .cse32 (<= main_~x~0 1) .cse33) (and (<= 73 main_~x~0) .cse34 (<= main_~x~0 73) .cse35) (and (<= main_~x~0 26) .cse36 (<= 26 main_~x~0) .cse37) (and .cse38 (<= main_~x~0 30) .cse39 (<= 30 main_~x~0)) (and .cse32 (<= main_~x~0 99) (<= 99 main_~x~0) .cse33) (and (<= 55 main_~x~0) .cse28 .cse29 (<= main_~x~0 55)) (and .cse40 (< 99 main_~x~0) .cse41 (<= main_~x~0 100)) (and (<= 31 main_~x~0) .cse42 .cse43 (<= main_~x~0 31)) (and (<= 76 main_~x~0) .cse44 .cse45 (<= main_~x~0 76)) (and (<= main_~x~0 22) (<= 22 main_~x~0) .cse46 .cse47) (and (<= main_~x~0 77) .cse2 (<= 77 main_~x~0) .cse3) (and (<= 68 main_~x~0) .cse48 .cse49 (<= main_~x~0 68)) (and .cse0 (<= main_~x~0 11) .cse1 (<= 11 main_~x~0)) (and .cse50 .cse51 (<= 16 main_~x~0) (<= main_~x~0 16)) (and (<= 18 main_~x~0) .cse52 .cse53 (<= main_~x~0 18)) (and (<= main_~x~0 50) (<= 50 main_~y~0) (<= 50 main_~x~0) (<= main_~y~0 50)) (and (<= 25 main_~x~0) .cse54 (<= main_~x~0 25) .cse55) (and (<= main_~x~0 44) .cse56 .cse57 (<= 44 main_~x~0)) (and (<= 19 main_~x~0) .cse16 (<= main_~x~0 19) .cse17) (and .cse58 .cse59 (<= 80 main_~x~0) (<= main_~x~0 80)) (and (<= 40 main_~x~0) .cse60 (<= main_~x~0 40) .cse61) (and (<= main_~x~0 97) .cse62 .cse63 (<= 97 main_~x~0)) (and (<= 75 main_~x~0) .cse54 .cse55 (<= main_~x~0 75)) (and (<= main_~x~0 27) .cse34 .cse35 (<= 27 main_~x~0)) (and (<= main_~x~0 72) .cse14 (<= 72 main_~x~0) .cse15) (and (<= main_~x~0 20) .cse58 (<= 20 main_~x~0) .cse59) (and .cse50 .cse51 (<= 84 main_~x~0) (<= main_~x~0 84)) (and .cse64 (<= 58 main_~x~0) .cse65 (<= main_~x~0 58)) (and (<= 78 main_~x~0) (<= main_~x~0 78) .cse46 .cse47) (and (<= main_~x~0 79) .cse66 .cse67 (<= 79 main_~x~0)) (and (<= 2 main_~x~0) (<= main_~x~0 2) .cse30 .cse31) (and (<= main_~x~0 17) .cse26 .cse27 (<= 17 main_~x~0)) (and .cse68 .cse69 (<= main_~x~0 33) (<= 33 main_~x~0)) (and .cse18 (<= main_~x~0 90) (<= 90 main_~x~0) .cse19) (and (<= main_~x~0 35) (<= 35 main_~x~0) .cse70 .cse71) (and (<= main_~x~0 93) .cse72 .cse73 (<= 93 main_~x~0)) (and .cse62 (<= main_~x~0 3) (<= 3 main_~x~0) .cse63) (and (<= 65 main_~x~0) .cse70 .cse71 (<= main_~x~0 65)) (and .cse74 (<= 86 main_~x~0) (<= main_~x~0 86) .cse75) (and .cse76 .cse77 (<= main_~x~0 85) (<= 85 main_~x~0)) (and .cse78 (<= main_~x~0 34) .cse79 (<= 34 main_~x~0)) (and .cse36 (<= main_~x~0 74) (<= 74 main_~x~0) .cse37) (and (<= main_~x~0 62) (<= 62 main_~x~0) .cse22 .cse23) (and (<= 7 main_~x~0) (<= main_~x~0 7) .cse72 .cse73) (and (<= 39 main_~x~0) .cse6 (<= main_~x~0 39) .cse7) (and (<= 52 main_~x~0) .cse20 (<= main_~x~0 52) .cse21) (and (<= 32 main_~x~0) (<= main_~x~0 32) .cse48 .cse49) (and (<= 42 main_~x~0) .cse64 .cse65 (<= main_~x~0 42)) (and (<= 12 main_~x~0) (<= main_~x~0 12) .cse80 .cse81) (and (<= 71 main_~x~0) (<= main_~x~0 71) .cse82 .cse83) (and .cse84 (<= 6 main_~x~0) (<= main_~x~0 6) .cse85) (and .cse56 (<= 56 main_~x~0) .cse57 (<= main_~x~0 56)) (and .cse86 .cse87 (<= 95 main_~x~0) (<= main_~x~0 95)) (and .cse44 (<= 24 main_~x~0) (<= main_~x~0 24) .cse45) (and .cse88 (<= 57 main_~x~0) .cse89 (<= main_~x~0 57)) (and (<= 8 main_~x~0) .cse90 (<= main_~x~0 8) .cse91) (and .cse92 .cse93 (<= 13 main_~x~0) (<= main_~x~0 13)) (and .cse86 (<= main_~x~0 5) .cse87 (<= 5 main_~x~0)) (and .cse69 .cse68 (<= main_~x~0 67) (<= 67 main_~x~0)) (and .cse94 (<= 91 main_~x~0) (<= main_~x~0 91) .cse95) (and .cse78 .cse79 (<= 66 main_~x~0) (<= main_~x~0 66)) (and (<= main_~x~0 9) (<= 9 main_~x~0) .cse94 .cse95) (and (<= 15 main_~x~0) .cse76 .cse77 (<= main_~x~0 15)) (and .cse42 .cse43 (<= 69 main_~x~0) (<= main_~x~0 69)) (and .cse92 .cse93 (<= 87 main_~x~0) (<= main_~x~0 87)) (and (<= 0 main_~x~0) (<= main_~x~0 0) .cse40 .cse41) (and .cse74 (<= 14 main_~x~0) (<= main_~x~0 14) .cse75) (and .cse96 .cse97 (<= 37 main_~x~0) (<= main_~x~0 37)) (and .cse84 (<= main_~x~0 94) (<= 94 main_~x~0) .cse85) (and (<= main_~x~0 51) .cse12 (<= 51 main_~x~0) .cse13) (and .cse88 .cse89 (<= 43 main_~x~0) (<= main_~x~0 43)) (and (<= 60 main_~x~0) .cse60 .cse61 (<= main_~x~0 60)) (and (<= main_~x~0 59) (<= 59 main_~x~0) .cse24 .cse25) (and .cse90 .cse91 (<= 92 main_~x~0) (<= main_~x~0 92)) (and (<= 29 main_~x~0) .cse82 .cse83 (<= main_~x~0 29)) (and .cse96 (<= main_~x~0 63) .cse97 (<= 63 main_~x~0)) (and (<= main_~x~0 82) (<= 82 main_~x~0) .cse52 .cse53) (and (<= main_~x~0 88) .cse80 .cse81 (<= 88 main_~x~0)) (and .cse10 (<= 96 main_~x~0) .cse11 (<= main_~x~0 96)) (and (<= main_~x~0 46) .cse4 .cse5 (<= 46 main_~x~0)) (and (<= main_~x~0 47) .cse98 .cse99 (<= 47 main_~x~0)) (and (<= main_~x~0 21) (<= 21 main_~x~0) .cse66 .cse67) (and .cse98 .cse99 (<= 53 main_~x~0) (<= main_~x~0 53)) (and (<= 64 main_~x~0) .cse8 .cse9 (<= main_~x~0 64)) (and .cse38 (<= 70 main_~x~0) .cse39 (<= main_~x~0 70)))) [2020-10-12 16:09:45,348 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 25) the Hoare annotation is: (and (< 99 main_~x~0) (<= main_~x~0 100)) [2020-10-12 16:09:45,348 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 28) no Hoare annotation was computed. [2020-10-12 16:09:45,348 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-12 16:09:45,348 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:09:45,348 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-12 16:09:45,348 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-12 16:09:45,348 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:09:45,348 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-12 16:09:45,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:09:45 BoogieIcfgContainer [2020-10-12 16:09:45,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:09:45,399 INFO L168 Benchmark]: Toolchain (without parser) took 84153.56 ms. Allocated memory was 138.9 MB in the beginning and 926.9 MB in the end (delta: 788.0 MB). Free memory was 102.7 MB in the beginning and 219.7 MB in the end (delta: -116.9 MB). Peak memory consumption was 786.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:09:45,400 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 16:09:45,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.37 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 93.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:09:45,401 INFO L168 Benchmark]: Boogie Preprocessor took 114.07 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 93.1 MB in the beginning and 178.8 MB in the end (delta: -85.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:09:45,402 INFO L168 Benchmark]: RCFGBuilder took 259.88 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 166.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:09:45,402 INFO L168 Benchmark]: TraceAbstraction took 83500.42 ms. Allocated memory was 200.8 MB in the beginning and 926.9 MB in the end (delta: 726.1 MB). Free memory was 165.6 MB in the beginning and 219.7 MB in the end (delta: -54.0 MB). Peak memory consumption was 787.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:09:45,405 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.37 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 93.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.07 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 93.1 MB in the beginning and 178.8 MB in the end (delta: -85.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 259.88 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 166.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 83500.42 ms. Allocated memory was 200.8 MB in the beginning and 926.9 MB in the end (delta: 726.1 MB). Free memory was 165.6 MB in the beginning and 219.7 MB in the end (delta: -54.0 MB). Peak memory consumption was 787.2 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: 17]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((11 <= y && y <= 11) && 89 <= x) && x <= 89) || (((x <= 23 && 23 <= y) && 23 <= x) && y <= 23)) || (((y <= 46 && 54 <= x) && 46 <= y) && x <= 54)) || (((x <= 61 && y <= 39) && 39 <= y) && 61 <= x)) || (((x <= 36 && 36 <= x) && 36 <= y) && y <= 36)) || (((y <= 4 && 4 <= x) && 4 <= y) && x <= 4)) || (((49 <= y && x <= 49) && y <= 49) && 49 <= x)) || (((28 <= y && x <= 28) && 28 <= x) && y <= 28)) || (((x <= 81 && y <= 19) && 19 <= y) && 81 <= x)) || (((y <= 10 && 10 <= x) && x <= 10) && 10 <= y)) || (((y <= 48 && 48 <= y) && 48 <= x) && x <= 48)) || (((38 <= x && x <= 38) && 38 <= y) && y <= 38)) || (((41 <= y && 41 <= x) && x <= 41) && y <= 41)) || (((x <= 83 && 17 <= y) && 83 <= x) && y <= 17)) || (((45 <= y && y <= 45) && 45 <= x) && x <= 45)) || (((98 <= x && 2 <= y) && x <= 98) && y <= 2)) || (((1 <= x && 1 <= y) && x <= 1) && y <= 1)) || (((73 <= x && y <= 27) && x <= 73) && 27 <= y)) || (((x <= 26 && 26 <= y) && 26 <= x) && y <= 26)) || (((30 <= y && x <= 30) && y <= 30) && 30 <= x)) || (((1 <= y && x <= 99) && 99 <= x) && y <= 1)) || (((55 <= x && 45 <= y) && y <= 45) && x <= 55)) || (((y <= 0 && 99 < x) && 0 <= y) && x <= 100)) || (((31 <= x && y <= 31) && 31 <= y) && x <= 31)) || (((76 <= x && y <= 24) && 24 <= y) && x <= 76)) || (((x <= 22 && 22 <= x) && y <= 22) && 22 <= y)) || (((x <= 77 && 23 <= y) && 77 <= x) && y <= 23)) || (((68 <= x && 32 <= y) && y <= 32) && x <= 68)) || (((11 <= y && x <= 11) && y <= 11) && 11 <= x)) || (((16 <= y && y <= 16) && 16 <= x) && x <= 16)) || (((18 <= x && y <= 18) && 18 <= y) && x <= 18)) || (((x <= 50 && 50 <= y) && 50 <= x) && y <= 50)) || (((25 <= x && 25 <= y) && x <= 25) && y <= 25)) || (((x <= 44 && y <= 44) && 44 <= y) && 44 <= x)) || (((19 <= x && y <= 19) && x <= 19) && 19 <= y)) || (((y <= 20 && 20 <= y) && 80 <= x) && x <= 80)) || (((40 <= x && 40 <= y) && x <= 40) && y <= 40)) || (((x <= 97 && y <= 3) && 3 <= y) && 97 <= x)) || (((75 <= x && 25 <= y) && y <= 25) && x <= 75)) || (((x <= 27 && y <= 27) && 27 <= y) && 27 <= x)) || (((x <= 72 && 28 <= y) && 72 <= x) && y <= 28)) || (((x <= 20 && y <= 20) && 20 <= x) && 20 <= y)) || (((16 <= y && y <= 16) && 84 <= x) && x <= 84)) || (((42 <= y && 58 <= x) && y <= 42) && x <= 58)) || (((78 <= x && x <= 78) && y <= 22) && 22 <= y)) || (((x <= 79 && y <= 21) && 21 <= y) && 79 <= x)) || (((2 <= x && x <= 2) && 2 <= y) && y <= 2)) || (((x <= 17 && 17 <= y) && y <= 17) && 17 <= x)) || (((y <= 33 && 33 <= y) && x <= 33) && 33 <= x)) || (((y <= 10 && x <= 90) && 90 <= x) && 10 <= y)) || (((x <= 35 && 35 <= x) && 35 <= y) && y <= 35)) || (((x <= 93 && 7 <= y) && y <= 7) && 93 <= x)) || (((y <= 3 && x <= 3) && 3 <= x) && 3 <= y)) || (((65 <= x && 35 <= y) && y <= 35) && x <= 65)) || (((14 <= y && 86 <= x) && x <= 86) && y <= 14)) || (((y <= 15 && 15 <= y) && x <= 85) && 85 <= x)) || (((y <= 34 && x <= 34) && 34 <= y) && 34 <= x)) || (((26 <= y && x <= 74) && 74 <= x) && y <= 26)) || (((x <= 62 && 62 <= x) && 38 <= y) && y <= 38)) || (((7 <= x && x <= 7) && 7 <= y) && y <= 7)) || (((39 <= x && y <= 39) && x <= 39) && 39 <= y)) || (((52 <= x && y <= 48) && x <= 52) && 48 <= y)) || (((32 <= x && x <= 32) && 32 <= y) && y <= 32)) || (((42 <= x && 42 <= y) && y <= 42) && x <= 42)) || (((12 <= x && x <= 12) && y <= 12) && 12 <= y)) || (((71 <= x && x <= 71) && 29 <= y) && y <= 29)) || (((y <= 6 && 6 <= x) && x <= 6) && 6 <= y)) || (((y <= 44 && 56 <= x) && 44 <= y) && x <= 56)) || (((5 <= y && y <= 5) && 95 <= x) && x <= 95)) || (((y <= 24 && 24 <= x) && x <= 24) && 24 <= y)) || (((43 <= y && 57 <= x) && y <= 43) && x <= 57)) || (((8 <= x && 8 <= y) && x <= 8) && y <= 8)) || (((13 <= y && y <= 13) && 13 <= x) && x <= 13)) || (((5 <= y && x <= 5) && y <= 5) && 5 <= x)) || (((33 <= y && y <= 33) && x <= 67) && 67 <= x)) || (((9 <= y && 91 <= x) && x <= 91) && y <= 9)) || (((y <= 34 && 34 <= y) && 66 <= x) && x <= 66)) || (((x <= 9 && 9 <= x) && 9 <= y) && y <= 9)) || (((15 <= x && y <= 15) && 15 <= y) && x <= 15)) || (((y <= 31 && 31 <= y) && 69 <= x) && x <= 69)) || (((13 <= y && y <= 13) && 87 <= x) && x <= 87)) || (((0 <= x && x <= 0) && y <= 0) && 0 <= y)) || (((14 <= y && 14 <= x) && x <= 14) && y <= 14)) || (((y <= 37 && 37 <= y) && 37 <= x) && x <= 37)) || (((y <= 6 && x <= 94) && 94 <= x) && 6 <= y)) || (((x <= 51 && 49 <= y) && 51 <= x) && y <= 49)) || (((43 <= y && y <= 43) && 43 <= x) && x <= 43)) || (((60 <= x && 40 <= y) && y <= 40) && x <= 60)) || (((x <= 59 && 59 <= x) && 41 <= y) && y <= 41)) || (((8 <= y && y <= 8) && 92 <= x) && x <= 92)) || (((29 <= x && 29 <= y) && y <= 29) && x <= 29)) || (((y <= 37 && x <= 63) && 37 <= y) && 63 <= x)) || (((x <= 82 && 82 <= x) && y <= 18) && 18 <= y)) || (((x <= 88 && y <= 12) && 12 <= y) && 88 <= x)) || (((y <= 4 && 96 <= x) && 4 <= y) && x <= 96)) || (((x <= 46 && y <= 46) && 46 <= y) && 46 <= x)) || (((x <= 47 && 47 <= y) && y <= 47) && 47 <= x)) || (((x <= 21 && 21 <= x) && y <= 21) && 21 <= y)) || (((47 <= y && y <= 47) && 53 <= x) && x <= 53)) || (((64 <= x && 36 <= y) && y <= 36) && x <= 64)) || (((30 <= y && 70 <= x) && y <= 30) && x <= 70) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 73.8s, OverallIterations: 15, TraceHistogramMax: 102, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 204 SDslu, 12564 SDs, 0 SdLazy, 23085 SolverSat, 1064 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 524 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=466occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 1855 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 22 PreInvPairs, 124 NumberOfFragments, 1326 HoareAnnotationTreeSize, 22 FomulaSimplifications, 77404 FormulaSimplificationTreeSizeReduction, 2.8s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17854 FormulaSimplificationTreeSizeReductionInter, 6.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 56.8s InterpolantComputationTime, 1543 NumberOfCodeBlocks, 1543 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1528 ConstructedInterpolants, 0 QuantifiedInterpolants, 1283132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 16521/47703 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...