/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=0.2 --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/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:18,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:18,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:18,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:18,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:18,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:18,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:18,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:18,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:18,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:18,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:18,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:18,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:18,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:18,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:18,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:18,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:18,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:18,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:18,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:18,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:18,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:18,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:18,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:18,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:18,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:18,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:18,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:18,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:18,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:18,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:18,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:18,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:18,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:18,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:18,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:18,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:18,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:18,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:18,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:18,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:18,859 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 04:31:18,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:18,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:18,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:18,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:18,916 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:18,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:18,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:18,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:18,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:18,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:18,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:18,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:18,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:18,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:18,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:18,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:18,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:18,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:18,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:18,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:18,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:18,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:18,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:18,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:18,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:18,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:18,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:18,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:18,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:18,925 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:31:19,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:19,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:19,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:19,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:19,416 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:19,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 04:31:19,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/991b52c5f/fae106487d894ed8a7395fc7c6bfb3f6/FLAG1302f73df [2020-09-25 04:31:20,186 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:20,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 04:31:20,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/991b52c5f/fae106487d894ed8a7395fc7c6bfb3f6/FLAG1302f73df [2020-09-25 04:31:20,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/991b52c5f/fae106487d894ed8a7395fc7c6bfb3f6 [2020-09-25 04:31:20,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:20,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:20,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:20,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:20,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:20,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:20" (1/1) ... [2020-09-25 04:31:20,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:20, skipping insertion in model container [2020-09-25 04:31:20,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:20" (1/1) ... [2020-09-25 04:31:20,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:20,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:21,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:21,059 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:21,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:21,455 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:21,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21 WrapperNode [2020-09-25 04:31:21,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:21,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:21,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:21,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:21,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (1/1) ... [2020-09-25 04:31:21,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (1/1) ... [2020-09-25 04:31:21,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (1/1) ... [2020-09-25 04:31:21,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (1/1) ... [2020-09-25 04:31:21,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (1/1) ... [2020-09-25 04:31:21,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (1/1) ... [2020-09-25 04:31:21,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (1/1) ... [2020-09-25 04:31:21,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:21,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:21,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:21,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:21,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:21,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:21,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:21,742 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:21,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:23,816 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:23,816 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:23,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:23 BoogieIcfgContainer [2020-09-25 04:31:23,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:23,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:23,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:23,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:23,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:20" (1/3) ... [2020-09-25 04:31:23,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd1bcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:23, skipping insertion in model container [2020-09-25 04:31:23,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:21" (2/3) ... [2020-09-25 04:31:23,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd1bcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:23, skipping insertion in model container [2020-09-25 04:31:23,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:23" (3/3) ... [2020-09-25 04:31:23,841 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 04:31:23,855 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:23,867 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:23,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:23,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:23,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:23,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:23,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:23,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:23,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:23,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:23,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 04:31:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:31:23,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:23,980 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] [2020-09-25 04:31:23,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:23,990 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 04:31:24,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:24,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404446951] [2020-09-25 04:31:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:24,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:31:24,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:31:24,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-09-25 04:31:24,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:24,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:24,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:31:24,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:31:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:31:25,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:25,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:25,192 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 04:31:25,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404446951] [2020-09-25 04:31:25,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:25,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:31:25,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141912294] [2020-09-25 04:31:25,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:25,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:25,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:25,229 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 04:31:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:29,435 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 04:31:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:31:29,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 04:31:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:29,478 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 04:31:29,478 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 04:31:29,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 04:31:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 04:31:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 04:31:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 04:31:29,640 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73 [2020-09-25 04:31:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:29,641 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 04:31:29,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 04:31:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 04:31:29,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:29,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:29,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:29,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times [2020-09-25 04:31:29,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:29,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259097123] [2020-09-25 04:31:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:33,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 04:31:33,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3689 [2020-09-25 04:31:33,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:33,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 04:31:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:33,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:33,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:33,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:33,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:33,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:33,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:33,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 04:31:33,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 04:31:33,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:33,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:31:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:33,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259097123] [2020-09-25 04:31:33,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:33,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:33,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375229500] [2020-09-25 04:31:33,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:33,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:33,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:33,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:33,674 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 5 states. [2020-09-25 04:31:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:36,488 INFO L93 Difference]: Finished difference Result 2592 states and 3339 transitions. [2020-09-25 04:31:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:36,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 04:31:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:36,500 INFO L225 Difference]: With dead ends: 2592 [2020-09-25 04:31:36,500 INFO L226 Difference]: Without dead ends: 1610 [2020-09-25 04:31:36,505 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 04:31:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-09-25 04:31:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1570. [2020-09-25 04:31:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-09-25 04:31:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1957 transitions. [2020-09-25 04:31:36,558 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1957 transitions. Word has length 160 [2020-09-25 04:31:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:36,559 INFO L479 AbstractCegarLoop]: Abstraction has 1570 states and 1957 transitions. [2020-09-25 04:31:36,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:36,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1957 transitions. [2020-09-25 04:31:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 04:31:36,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:36,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:36,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:36,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:36,567 INFO L82 PathProgramCache]: Analyzing trace with hash -829752670, now seen corresponding path program 1 times [2020-09-25 04:31:36,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:36,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199537952] [2020-09-25 04:31:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:41,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:41,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 04:31:41,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:31:41,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:41,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 04:31:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:41,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:41,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:41,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:41,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:41,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:41,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:41,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:41,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:41,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 04:31:41,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 04:31:41,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:41,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:31:41,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:41,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199537952] [2020-09-25 04:31:41,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:41,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:41,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055752909] [2020-09-25 04:31:41,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:41,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:41,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:41,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:41,908 INFO L87 Difference]: Start difference. First operand 1570 states and 1957 transitions. Second operand 5 states. [2020-09-25 04:31:44,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:44,702 INFO L93 Difference]: Finished difference Result 2173 states and 2836 transitions. [2020-09-25 04:31:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:44,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-25 04:31:44,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:44,720 INFO L225 Difference]: With dead ends: 2173 [2020-09-25 04:31:44,720 INFO L226 Difference]: Without dead ends: 2171 [2020-09-25 04:31:44,722 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 04:31:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-09-25 04:31:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1763. [2020-09-25 04:31:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-09-25 04:31:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2279 transitions. [2020-09-25 04:31:44,801 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2279 transitions. Word has length 169 [2020-09-25 04:31:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:44,806 INFO L479 AbstractCegarLoop]: Abstraction has 1763 states and 2279 transitions. [2020-09-25 04:31:44,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2279 transitions. [2020-09-25 04:31:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 04:31:44,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:44,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:44,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:44,813 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:44,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2088226614, now seen corresponding path program 1 times [2020-09-25 04:31:44,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:44,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669607325] [2020-09-25 04:31:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:49,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 04:31:49,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:31:49,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:49,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-09-25 04:31:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:49,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:49,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:49,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:49,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:49,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:49,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:50,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:50,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:31:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 04:31:50,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:50,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:31:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:50,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669607325] [2020-09-25 04:31:50,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:50,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:50,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90136288] [2020-09-25 04:31:50,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:50,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:50,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:50,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:50,165 INFO L87 Difference]: Start difference. First operand 1763 states and 2279 transitions. Second operand 5 states. [2020-09-25 04:31:52,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:52,978 INFO L93 Difference]: Finished difference Result 3903 states and 5155 transitions. [2020-09-25 04:31:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:52,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 04:31:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:52,990 INFO L225 Difference]: With dead ends: 3903 [2020-09-25 04:31:52,990 INFO L226 Difference]: Without dead ends: 1746 [2020-09-25 04:31:52,999 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 04:31:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-09-25 04:31:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1736. [2020-09-25 04:31:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-09-25 04:31:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2217 transitions. [2020-09-25 04:31:53,052 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2217 transitions. Word has length 175 [2020-09-25 04:31:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:53,053 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2217 transitions. [2020-09-25 04:31:53,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2217 transitions. [2020-09-25 04:31:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:31:53,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:53,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:53,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:53,079 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:53,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2120468014, now seen corresponding path program 1 times [2020-09-25 04:31:53,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:53,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016028285] [2020-09-25 04:31:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 04:31:56,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:31:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3692 [2020-09-25 04:31:56,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-25 04:31:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:31:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:56,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:56,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:31:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:57,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:31:57,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 04:31:57,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:57,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 04:31:57,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:57,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016028285] [2020-09-25 04:31:57,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:57,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:57,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083328463] [2020-09-25 04:31:57,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:57,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:57,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:57,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:57,102 INFO L87 Difference]: Start difference. First operand 1736 states and 2217 transitions. Second operand 5 states. [2020-09-25 04:31:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:59,975 INFO L93 Difference]: Finished difference Result 4250 states and 5643 transitions. [2020-09-25 04:31:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:59,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 04:31:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:59,990 INFO L225 Difference]: With dead ends: 4250 [2020-09-25 04:31:59,990 INFO L226 Difference]: Without dead ends: 2529 [2020-09-25 04:31:59,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 04:32:00,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2020-09-25 04:32:00,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2312. [2020-09-25 04:32:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2020-09-25 04:32:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2948 transitions. [2020-09-25 04:32:00,062 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2948 transitions. Word has length 181 [2020-09-25 04:32:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:00,062 INFO L479 AbstractCegarLoop]: Abstraction has 2312 states and 2948 transitions. [2020-09-25 04:32:00,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:32:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2948 transitions. [2020-09-25 04:32:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 04:32:00,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:00,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:00,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:32:00,068 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:00,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1805085330, now seen corresponding path program 1 times [2020-09-25 04:32:00,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:00,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571220290] [2020-09-25 04:32:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:05,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 04:32:05,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:32:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:32:05,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:05,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-09-25 04:32:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:32:05,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:05,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:05,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:05,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:05,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:32:05,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:05,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:05,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:05,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:32:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:32:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:32:05,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571220290] [2020-09-25 04:32:05,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:05,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:32:05,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967207788] [2020-09-25 04:32:05,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:32:05,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:05,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:32:05,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:32:05,506 INFO L87 Difference]: Start difference. First operand 2312 states and 2948 transitions. Second operand 5 states.