/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:38:37,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:38:37,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:38:37,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:38:37,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:38:37,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:38:37,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:38:37,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:38:37,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:38:37,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:38:37,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:38:37,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:38:37,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:38:37,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:38:37,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:38:37,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:38:37,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:38:37,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:38:37,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:38:37,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:38:37,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:38:37,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:38:37,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:38:37,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:38:37,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:38:37,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:38:37,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:38:37,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:38:37,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:38:37,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:38:37,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:38:37,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:38:37,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:38:37,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:38:37,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:38:37,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:38:37,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:38:37,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:38:37,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:38:37,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:38:37,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:38:37,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:38:37,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:38:37,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:38:37,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:38:37,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:38:37,899 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:38:37,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:38:37,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:38:37,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:38:37,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:38:37,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:38:37,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:38:37,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:38:37,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:38:37,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:38:37,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:38:37,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:38:37,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:38:37,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:38:37,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:38:37,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:38:37,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:38:37,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:38:37,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:38:37,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:38:37,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:38:37,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:38:37,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:38:37,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:38:37,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:38:37,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:38:38,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:38:38,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:38:38,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:38:38,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:38:38,403 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:38:38,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 14:38:38,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f3bb6e20/869cfbca90854758bf99c494cc7e67a7/FLAG8a4bc13a6 [2020-09-25 14:38:39,197 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:38:39,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 14:38:39,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f3bb6e20/869cfbca90854758bf99c494cc7e67a7/FLAG8a4bc13a6 [2020-09-25 14:38:39,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f3bb6e20/869cfbca90854758bf99c494cc7e67a7 [2020-09-25 14:38:39,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:38:39,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:38:39,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:38:39,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:38:39,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:38:39,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:38:39" (1/1) ... [2020-09-25 14:38:39,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4f649f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:39, skipping insertion in model container [2020-09-25 14:38:39,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:38:39" (1/1) ... [2020-09-25 14:38:39,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:38:39,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:38:39,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:38:39,991 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:38:40,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:38:40,242 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:38:40,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40 WrapperNode [2020-09-25 14:38:40,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:38:40,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:38:40,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:38:40,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:38:40,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (1/1) ... [2020-09-25 14:38:40,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (1/1) ... [2020-09-25 14:38:40,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (1/1) ... [2020-09-25 14:38:40,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (1/1) ... [2020-09-25 14:38:40,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (1/1) ... [2020-09-25 14:38:40,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (1/1) ... [2020-09-25 14:38:40,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (1/1) ... [2020-09-25 14:38:40,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:38:40,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:38:40,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:38:40,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:38:40,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:38:40,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:38:40,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:38:40,452 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:38:40,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:38:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:38:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:38:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:38:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:38:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:38:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:38:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:38:41,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:38:41,846 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:38:41,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:38:41 BoogieIcfgContainer [2020-09-25 14:38:41,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:38:41,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:38:41,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:38:41,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:38:41,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:38:39" (1/3) ... [2020-09-25 14:38:41,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17df8718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:38:41, skipping insertion in model container [2020-09-25 14:38:41,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:40" (2/3) ... [2020-09-25 14:38:41,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17df8718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:38:41, skipping insertion in model container [2020-09-25 14:38:41,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:38:41" (3/3) ... [2020-09-25 14:38:41,867 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2020-09-25 14:38:41,879 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:38:41,891 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:38:41,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:38:41,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:38:41,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:38:41,952 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:38:41,953 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:38:41,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:38:41,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:38:41,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:38:41,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:38:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:38:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 14:38:42,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:42,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:42,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:42,029 INFO L82 PathProgramCache]: Analyzing trace with hash -260189822, now seen corresponding path program 1 times [2020-09-25 14:38:42,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:42,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296318050] [2020-09-25 14:38:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:42,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:44,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:45,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 14:38:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:38:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 14:38:47,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:47,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:38:47,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 14:38:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:38:47,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 14:38:47,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:38:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:47,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296318050] [2020-09-25 14:38:47,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:38:47,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:38:47,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876046646] [2020-09-25 14:38:47,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:38:47,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:47,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:38:47,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:38:47,816 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:38:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:50,014 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 14:38:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:38:50,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-09-25 14:38:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:50,043 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 14:38:50,043 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 14:38:50,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:50,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 14:38:50,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 14:38:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 14:38:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 14:38:50,173 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 147 [2020-09-25 14:38:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:50,175 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 14:38:50,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:38:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 14:38:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 14:38:50,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:50,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:50,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:38:50,191 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1869570329, now seen corresponding path program 1 times [2020-09-25 14:38:50,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:50,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931928432] [2020-09-25 14:38:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:50,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:54,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:55,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:55,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 14:38:55,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 14:38:55,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:55,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 14:38:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 14:38:55,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:55,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:55,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:55,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:38:55,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:55,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 14:38:55,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:38:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:55,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:55,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:38:55,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:38:55,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:55,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:38:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:55,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931928432] [2020-09-25 14:38:55,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:55,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:55,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126620382] [2020-09-25 14:38:55,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:55,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:55,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:55,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:55,587 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 14:38:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:57,417 INFO L93 Difference]: Finished difference Result 1536 states and 1967 transitions. [2020-09-25 14:38:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:57,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 14:38:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:57,426 INFO L225 Difference]: With dead ends: 1536 [2020-09-25 14:38:57,426 INFO L226 Difference]: Without dead ends: 943 [2020-09-25 14:38:57,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-09-25 14:38:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 921. [2020-09-25 14:38:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-09-25 14:38:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1109 transitions. [2020-09-25 14:38:57,479 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1109 transitions. Word has length 181 [2020-09-25 14:38:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:57,480 INFO L479 AbstractCegarLoop]: Abstraction has 921 states and 1109 transitions. [2020-09-25 14:38:57,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1109 transitions. [2020-09-25 14:38:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 14:38:57,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:57,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:57,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:57,486 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:57,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1660657117, now seen corresponding path program 1 times [2020-09-25 14:38:57,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:57,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70932432] [2020-09-25 14:38:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:02,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:02,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 14:39:02,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:39:02,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 14:39:02,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:02,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:39:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 14:39:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:39:02,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:39:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:02,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:02,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:02,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:39:02,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:02,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:02,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:02,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:39:02,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 14:39:02,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:02,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:39:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:39:02,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:39:03,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70932432] [2020-09-25 14:39:03,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:03,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:39:03,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347969782] [2020-09-25 14:39:03,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:39:03,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:03,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:39:03,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:39:03,125 INFO L87 Difference]: Start difference. First operand 921 states and 1109 transitions. Second operand 8 states. [2020-09-25 14:39:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:07,241 INFO L93 Difference]: Finished difference Result 2629 states and 3421 transitions. [2020-09-25 14:39:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:39:07,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2020-09-25 14:39:07,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:07,267 INFO L225 Difference]: With dead ends: 2629 [2020-09-25 14:39:07,271 INFO L226 Difference]: Without dead ends: 1637 [2020-09-25 14:39:07,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:39:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-09-25 14:39:07,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1565. [2020-09-25 14:39:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-09-25 14:39:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1879 transitions. [2020-09-25 14:39:07,358 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1879 transitions. Word has length 185 [2020-09-25 14:39:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:07,359 INFO L479 AbstractCegarLoop]: Abstraction has 1565 states and 1879 transitions. [2020-09-25 14:39:07,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:39:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1879 transitions. [2020-09-25 14:39:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 14:39:07,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:07,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:39:07,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:39:07,369 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:07,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:07,372 INFO L82 PathProgramCache]: Analyzing trace with hash 175185241, now seen corresponding path program 1 times [2020-09-25 14:39:07,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:07,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661442998] [2020-09-25 14:39:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:07,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:07,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:10,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:12,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:12,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 14:39:12,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:39:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:39:12,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:12,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:39:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:39:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 14:39:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:13,025 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-25 14:39:13,165 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-09-25 14:39:13,399 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-09-25 14:39:13,546 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-09-25 14:39:13,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:13,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:13,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:13,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:39:13,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:13,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:39:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:39:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:13,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 14:39:13,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:39:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 14:39:13,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:13,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:39:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 14:39:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:39:14,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661442998] [2020-09-25 14:39:14,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:14,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:39:14,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674400646] [2020-09-25 14:39:14,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:39:14,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:14,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:39:14,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:39:14,185 INFO L87 Difference]: Start difference. First operand 1565 states and 1879 transitions. Second operand 16 states. [2020-09-25 14:39:18,887 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-25 14:39:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:19,000 INFO L93 Difference]: Finished difference Result 5175 states and 6434 transitions. [2020-09-25 14:39:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:39:19,003 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 191 [2020-09-25 14:39:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:19,026 INFO L225 Difference]: With dead ends: 5175 [2020-09-25 14:39:19,027 INFO L226 Difference]: Without dead ends: 3632 [2020-09-25 14:39:19,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:39:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2020-09-25 14:39:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3392. [2020-09-25 14:39:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3392 states. [2020-09-25 14:39:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 4123 transitions. [2020-09-25 14:39:19,162 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 4123 transitions. Word has length 191 [2020-09-25 14:39:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:19,163 INFO L479 AbstractCegarLoop]: Abstraction has 3392 states and 4123 transitions. [2020-09-25 14:39:19,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:39:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 4123 transitions. [2020-09-25 14:39:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 14:39:19,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:19,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:39:19,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:39:19,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1139808123, now seen corresponding path program 1 times [2020-09-25 14:39:19,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:19,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985635867] [2020-09-25 14:39:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:19,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:24,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:24,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 14:39:24,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:39:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:39:24,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:24,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 14:39:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 14:39:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:24,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:24,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:24,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:24,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:39:24,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:24,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:24,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:24,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:24,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:39:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:39:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:24,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:24,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:39:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:24,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:24,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 14:39:24,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 14:39:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:24,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:39:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:39:24,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985635867] [2020-09-25 14:39:24,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:24,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:39:24,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59681742] [2020-09-25 14:39:24,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:39:24,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:39:24,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:39:24,527 INFO L87 Difference]: Start difference. First operand 3392 states and 4123 transitions. Second operand 5 states. [2020-09-25 14:39:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:26,058 INFO L93 Difference]: Finished difference Result 7710 states and 9613 transitions. [2020-09-25 14:39:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:39:26,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-09-25 14:39:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:26,086 INFO L225 Difference]: With dead ends: 7710 [2020-09-25 14:39:26,086 INFO L226 Difference]: Without dead ends: 4340 [2020-09-25 14:39:26,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:39:26,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2020-09-25 14:39:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3992. [2020-09-25 14:39:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2020-09-25 14:39:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 4976 transitions. [2020-09-25 14:39:26,223 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 4976 transitions. Word has length 209 [2020-09-25 14:39:26,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:26,223 INFO L479 AbstractCegarLoop]: Abstraction has 3992 states and 4976 transitions. [2020-09-25 14:39:26,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:39:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 4976 transitions. [2020-09-25 14:39:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 14:39:26,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:26,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:39:26,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:39:26,238 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:26,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:26,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1501426121, now seen corresponding path program 1 times [2020-09-25 14:39:26,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:26,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859836787] [2020-09-25 14:39:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking...