/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:36:16,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:36:16,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:36:16,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:36:16,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:36:16,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:36:16,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:36:16,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:36:16,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:36:16,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:36:16,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:36:16,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:36:16,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:36:16,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:36:16,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:36:16,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:36:16,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:36:16,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:36:16,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:36:16,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:36:16,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:36:16,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:36:16,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:36:16,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:36:16,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:36:16,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:36:16,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:36:16,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:36:16,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:36:16,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:36:16,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:36:16,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:36:16,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:36:16,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:36:16,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:36:16,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:36:16,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:36:16,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:36:16,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:36:16,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:36:16,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:36:16,852 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 05:36:16,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:36:16,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:36:16,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:36:16,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:36:16,896 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:36:16,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:36:16,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:36:16,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:36:16,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:36:16,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:36:16,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:36:16,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:36:16,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:36:16,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:36:16,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:36:16,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:36:16,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:36:16,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:36:16,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:36:16,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:36:16,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:36:16,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:36:16,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:36:16,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:36:16,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:36:16,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:36:16,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:36:16,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:36:16,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:36:16,902 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:36:17,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:36:17,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:36:17,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:36:17,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:36:17,437 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:36:17,438 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 05:36:17,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6c465eeb/640936ee650a4c2ba6bf31bacf7fec08/FLAG5ddd964d4 [2020-09-25 05:36:18,182 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:36:18,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 05:36:18,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6c465eeb/640936ee650a4c2ba6bf31bacf7fec08/FLAG5ddd964d4 [2020-09-25 05:36:18,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6c465eeb/640936ee650a4c2ba6bf31bacf7fec08 [2020-09-25 05:36:18,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:36:18,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:36:18,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:18,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:36:18,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:36:18,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:18" (1/1) ... [2020-09-25 05:36:18,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:18, skipping insertion in model container [2020-09-25 05:36:18,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:18" (1/1) ... [2020-09-25 05:36:18,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:36:18,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:36:18,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:18,969 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:36:19,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:19,240 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:36:19,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19 WrapperNode [2020-09-25 05:36:19,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:19,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:36:19,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:36:19,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:36:19,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (1/1) ... [2020-09-25 05:36:19,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (1/1) ... [2020-09-25 05:36:19,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (1/1) ... [2020-09-25 05:36:19,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (1/1) ... [2020-09-25 05:36:19,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (1/1) ... [2020-09-25 05:36:19,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (1/1) ... [2020-09-25 05:36:19,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (1/1) ... [2020-09-25 05:36:19,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:36:19,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:36:19,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:36:19,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:36:19,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (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 05:36:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:36:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:36:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:36:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:36:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:36:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:36:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:36:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:36:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:36:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:36:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:36:20,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:36:20,806 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:36:20,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:20 BoogieIcfgContainer [2020-09-25 05:36:20,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:36:20,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:36:20,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:36:20,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:36:20,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:36:18" (1/3) ... [2020-09-25 05:36:20,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:20, skipping insertion in model container [2020-09-25 05:36:20,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:19" (2/3) ... [2020-09-25 05:36:20,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:20, skipping insertion in model container [2020-09-25 05:36:20,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:20" (3/3) ... [2020-09-25 05:36:20,825 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-09-25 05:36:20,836 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:36:20,847 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:36:20,869 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:36:20,902 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:36:20,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:36:20,903 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:36:20,903 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:36:20,903 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:36:20,903 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:36:20,903 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:36:20,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:36:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:36:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 05:36:20,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:20,960 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] [2020-09-25 05:36:20,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:20,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1835465527, now seen corresponding path program 1 times [2020-09-25 05:36:20,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:20,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606475125] [2020-09-25 05:36:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:21,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:21,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:26,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:26,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:26,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 05:36:26,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:36:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:36:26,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:26,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:36:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 05:36:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:36:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:26,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:26,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:26,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:26,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:36:26,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:26,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:36:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:26,496 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 05:36:26,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606475125] [2020-09-25 05:36:26,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:26,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:36:26,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928983661] [2020-09-25 05:36:26,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:36:26,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:26,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:36:26,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:36:26,536 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:36:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:28,737 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 05:36:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:36:28,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-09-25 05:36:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:28,776 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 05:36:28,776 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 05:36:28,786 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 05:36:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 05:36:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 05:36:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 05:36:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 05:36:28,895 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 128 [2020-09-25 05:36:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:28,896 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 05:36:28,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:36:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 05:36:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 05:36:28,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:28,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:28,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:36:28,913 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:28,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:28,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1758478109, now seen corresponding path program 1 times [2020-09-25 05:36:28,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:28,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746202060] [2020-09-25 05:36:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:29,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:31,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:33,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:33,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 05:36:33,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:36:33,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:36:33,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:33,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:36:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 05:36:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:34,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:34,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:34,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:34,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:36:34,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:34,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:34,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:36:34,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:36:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:34,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:36:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:34,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746202060] [2020-09-25 05:36:34,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:34,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:34,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500313584] [2020-09-25 05:36:34,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:34,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:34,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:34,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:34,213 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 05:36:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:36,083 INFO L93 Difference]: Finished difference Result 1608 states and 2068 transitions. [2020-09-25 05:36:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:36,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 05:36:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:36,091 INFO L225 Difference]: With dead ends: 1608 [2020-09-25 05:36:36,091 INFO L226 Difference]: Without dead ends: 971 [2020-09-25 05:36:36,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-25 05:36:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 961. [2020-09-25 05:36:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-25 05:36:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-25 05:36:36,134 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 146 [2020-09-25 05:36:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:36,135 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-25 05:36:36,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-25 05:36:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 05:36:36,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:36,141 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] [2020-09-25 05:36:36,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:36:36,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:36,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1227074990, now seen corresponding path program 1 times [2020-09-25 05:36:36,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:36,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352672077] [2020-09-25 05:36:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:36,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:41,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 05:36:41,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:36:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:36:41,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:41,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:36:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 05:36:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:41,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:41,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:36:41,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:41,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:36:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:41,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:41,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:36:41,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 05:36:41,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:41,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:36:41,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:41,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352672077] [2020-09-25 05:36:41,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:41,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:36:41,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888231269] [2020-09-25 05:36:41,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:41,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:41,524 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 7 states. [2020-09-25 05:36:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:43,780 INFO L93 Difference]: Finished difference Result 2761 states and 3633 transitions. [2020-09-25 05:36:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:36:43,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 05:36:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:43,801 INFO L225 Difference]: With dead ends: 2761 [2020-09-25 05:36:43,802 INFO L226 Difference]: Without dead ends: 1822 [2020-09-25 05:36:43,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:36:43,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-09-25 05:36:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1719. [2020-09-25 05:36:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1719 states. [2020-09-25 05:36:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2191 transitions. [2020-09-25 05:36:43,894 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2191 transitions. Word has length 172 [2020-09-25 05:36:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:43,894 INFO L479 AbstractCegarLoop]: Abstraction has 1719 states and 2191 transitions. [2020-09-25 05:36:43,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:36:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2191 transitions. [2020-09-25 05:36:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 05:36:43,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:43,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:43,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:36:43,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:43,914 INFO L82 PathProgramCache]: Analyzing trace with hash -285157092, now seen corresponding path program 1 times [2020-09-25 05:36:43,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:43,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676201146] [2020-09-25 05:36:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:44,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:48,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:48,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 05:36:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:36:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:36:48,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:48,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:36:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:36:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:49,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:49,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:49,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:36:49,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:49,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:49,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:49,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:49,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:49,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:36:49,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:49,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:36:49,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:49,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:36:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:36:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:49,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:49,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:49,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:36:49,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:49,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:36:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:36:49,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676201146] [2020-09-25 05:36:49,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:49,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:36:49,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288041251] [2020-09-25 05:36:49,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:49,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:49,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:49,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:49,422 INFO L87 Difference]: Start difference. First operand 1719 states and 2191 transitions. Second operand 7 states. [2020-09-25 05:36:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:51,723 INFO L93 Difference]: Finished difference Result 4696 states and 6327 transitions. [2020-09-25 05:36:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:36:51,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-09-25 05:36:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:51,745 INFO L225 Difference]: With dead ends: 4696 [2020-09-25 05:36:51,745 INFO L226 Difference]: Without dead ends: 2999 [2020-09-25 05:36:51,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:36:51,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-09-25 05:36:51,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2979. [2020-09-25 05:36:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2979 states. [2020-09-25 05:36:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3918 transitions. [2020-09-25 05:36:51,855 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3918 transitions. Word has length 184 [2020-09-25 05:36:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:51,855 INFO L479 AbstractCegarLoop]: Abstraction has 2979 states and 3918 transitions. [2020-09-25 05:36:51,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:36:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3918 transitions. [2020-09-25 05:36:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 05:36:51,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:51,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:51,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:36:51,870 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1852469802, now seen corresponding path program 1 times [2020-09-25 05:36:51,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:51,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497699254] [2020-09-25 05:36:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:56,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:56,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 05:36:56,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:36:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:36:56,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:56,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 05:36:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 05:36:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:57,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:57,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:57,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:36:57,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:57,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:36:57,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:57,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:36:57,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:57,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:36:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:57,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:36:57,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:36:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 05:36:57,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497699254] [2020-09-25 05:36:57,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:57,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:57,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735789164] [2020-09-25 05:36:57,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:57,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:57,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:57,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:57,221 INFO L87 Difference]: Start difference. First operand 2979 states and 3918 transitions. Second operand 5 states. [2020-09-25 05:36:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:58,978 INFO L93 Difference]: Finished difference Result 7306 states and 9708 transitions. [2020-09-25 05:36:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:58,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-09-25 05:36:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:59,004 INFO L225 Difference]: With dead ends: 7306 [2020-09-25 05:36:59,004 INFO L226 Difference]: Without dead ends: 4349 [2020-09-25 05:36:59,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:59,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2020-09-25 05:36:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4184. [2020-09-25 05:36:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4184 states. [2020-09-25 05:36:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 5557 transitions. [2020-09-25 05:36:59,149 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 5557 transitions. Word has length 188 [2020-09-25 05:36:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:59,149 INFO L479 AbstractCegarLoop]: Abstraction has 4184 states and 5557 transitions. [2020-09-25 05:36:59,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 5557 transitions. [2020-09-25 05:36:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 05:36:59,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:59,168 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] [2020-09-25 05:36:59,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:36:59,169 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:59,169 INFO L82 PathProgramCache]: Analyzing trace with hash 381318114, now seen corresponding path program 1 times [2020-09-25 05:36:59,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:59,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346285329] [2020-09-25 05:36:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:04,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 05:37:04,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:37:04,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:04,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-25 05:37:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 05:37:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:04,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:04,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:04,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:04,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:04,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:04,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:37:04,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:04,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 05:37:04,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:04,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:37:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:04,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346285329] [2020-09-25 05:37:04,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:04,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:04,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516490952] [2020-09-25 05:37:04,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:04,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:04,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:04,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:04,761 INFO L87 Difference]: Start difference. First operand 4184 states and 5557 transitions. Second operand 5 states.