/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=1.0 --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/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:09,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:09,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:09,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:09,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:09,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:09,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:09,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:09,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:09,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:09,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:09,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:09,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:09,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:09,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:09,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:09,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:09,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:09,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:09,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:09,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:09,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:09,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:09,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:09,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:09,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:09,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:09,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:09,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:09,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:09,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:09,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:09,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:09,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:09,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:09,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:09,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:09,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:09,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:09,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:09,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:09,879 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 09:06:09,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:09,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:09,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:09,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:09,907 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:09,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:09,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:09,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:09,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:09,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:09,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:09,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:09,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:09,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:09,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:09,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:09,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:09,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:09,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:09,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:09,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:09,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:09,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:09,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:09,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:09,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:09,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:09,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:09,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:09,912 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:06:10,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:10,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:10,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:10,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:10,388 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:10,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 09:06:10,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e366987b4/914bab09e4d04cefbdce5ae697151089/FLAG8019c3c38 [2020-09-25 09:06:11,124 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:11,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 09:06:11,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e366987b4/914bab09e4d04cefbdce5ae697151089/FLAG8019c3c38 [2020-09-25 09:06:11,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e366987b4/914bab09e4d04cefbdce5ae697151089 [2020-09-25 09:06:11,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:11,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:11,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:11,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:11,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:11,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:11" (1/1) ... [2020-09-25 09:06:11,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:11, skipping insertion in model container [2020-09-25 09:06:11,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:11" (1/1) ... [2020-09-25 09:06:11,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:11,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:11,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:11,971 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:12,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:12,201 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:12,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12 WrapperNode [2020-09-25 09:06:12,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:12,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:12,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:12,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:12,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:12,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:12,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:12,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:12,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (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 09:06:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:13,740 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:13,740 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:13,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:13 BoogieIcfgContainer [2020-09-25 09:06:13,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:13,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:13,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:13,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:13,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:11" (1/3) ... [2020-09-25 09:06:13,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:13, skipping insertion in model container [2020-09-25 09:06:13,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12" (2/3) ... [2020-09-25 09:06:13,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:13, skipping insertion in model container [2020-09-25 09:06:13,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:13" (3/3) ... [2020-09-25 09:06:13,760 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 09:06:13,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:13,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:13,809 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:13,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:13,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:13,844 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:13,844 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:13,844 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:13,844 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:13,844 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:13,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:06:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 09:06:13,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:13,889 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] [2020-09-25 09:06:13,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:13,898 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 09:06:13,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:13,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953] [2020-09-25 09:06:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:14,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:14,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 09:06:14,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-09-25 09:06:14,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:14,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:06:14,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:14,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:14,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:14,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:06:14,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:14,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:15,033 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 09:06:15,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953] [2020-09-25 09:06:15,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:15,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:15,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884902326] [2020-09-25 09:06:15,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:15,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:15,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:15,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:15,067 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:06:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:17,068 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 09:06:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:17,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 09:06:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:17,097 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 09:06:17,098 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 09:06:17,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 09:06:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 09:06:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 09:06:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 09:06:17,218 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 54 [2020-09-25 09:06:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:17,219 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 09:06:17,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 09:06:17,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 09:06:17,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:17,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:17,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:17,228 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:17,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 09:06:17,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:17,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589040039] [2020-09-25 09:06:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 09:06:21,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4259 [2020-09-25 09:06:21,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:06:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:21,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:21,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:21,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:21,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:21,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 09:06:21,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:06:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:21,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589040039] [2020-09-25 09:06:21,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:21,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:21,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414134045] [2020-09-25 09:06:21,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:21,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:21,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:21,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:21,992 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 7 states. [2020-09-25 09:06:24,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:24,271 INFO L93 Difference]: Finished difference Result 1226 states and 1752 transitions. [2020-09-25 09:06:24,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:06:24,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-09-25 09:06:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:24,282 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:06:24,282 INFO L226 Difference]: Without dead ends: 1224 [2020-09-25 09:06:24,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-09-25 09:06:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1036. [2020-09-25 09:06:24,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 09:06:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1433 transitions. [2020-09-25 09:06:24,374 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1433 transitions. Word has length 133 [2020-09-25 09:06:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:24,378 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1433 transitions. [2020-09-25 09:06:24,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1433 transitions. [2020-09-25 09:06:24,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 09:06:24,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:24,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:24,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:24,391 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:24,391 INFO L82 PathProgramCache]: Analyzing trace with hash -412359152, now seen corresponding path program 1 times [2020-09-25 09:06:24,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:24,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282054636] [2020-09-25 09:06:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 09:06:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:06:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 09:06:29,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:29,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 09:06:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:29,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:29,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:06:29,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:29,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:29,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:29,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:29,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:30,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:30,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:30,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 09:06:30,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:30,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:30,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:30,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:30,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282054636] [2020-09-25 09:06:30,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:30,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:30,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43030145] [2020-09-25 09:06:30,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:30,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:30,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:30,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:30,212 INFO L87 Difference]: Start difference. First operand 1036 states and 1433 transitions. Second operand 10 states. [2020-09-25 09:06:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:33,555 INFO L93 Difference]: Finished difference Result 2880 states and 4135 transitions. [2020-09-25 09:06:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:33,556 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 09:06:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:33,571 INFO L225 Difference]: With dead ends: 2880 [2020-09-25 09:06:33,571 INFO L226 Difference]: Without dead ends: 1840 [2020-09-25 09:06:33,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:06:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2020-09-25 09:06:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1496. [2020-09-25 09:06:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-09-25 09:06:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2000 transitions. [2020-09-25 09:06:33,660 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2000 transitions. Word has length 137 [2020-09-25 09:06:33,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:33,662 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 2000 transitions. [2020-09-25 09:06:33,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2000 transitions. [2020-09-25 09:06:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 09:06:33,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:33,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:33,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:33,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:33,673 INFO L82 PathProgramCache]: Analyzing trace with hash -663569246, now seen corresponding path program 1 times [2020-09-25 09:06:33,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:33,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406824653] [2020-09-25 09:06:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:35,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:38,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 09:06:38,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:38,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:06:38,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:38,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 09:06:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:38,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:38,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:06:38,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:38,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 37 [2020-09-25 09:06:38,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:39,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 09:06:39,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 09:06:39,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:39,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:39,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:39,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 09:06:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:39,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406824653] [2020-09-25 09:06:39,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:39,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:06:39,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177185773] [2020-09-25 09:06:39,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:39,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:39,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:39,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:39,264 INFO L87 Difference]: Start difference. First operand 1496 states and 2000 transitions. Second operand 7 states. [2020-09-25 09:06:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:41,488 INFO L93 Difference]: Finished difference Result 3832 states and 5414 transitions. [2020-09-25 09:06:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:41,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-09-25 09:06:41,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:41,505 INFO L225 Difference]: With dead ends: 3832 [2020-09-25 09:06:41,505 INFO L226 Difference]: Without dead ends: 2351 [2020-09-25 09:06:41,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:06:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2020-09-25 09:06:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1679. [2020-09-25 09:06:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1679 states. [2020-09-25 09:06:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2079 transitions. [2020-09-25 09:06:41,631 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2079 transitions. Word has length 200 [2020-09-25 09:06:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:41,631 INFO L479 AbstractCegarLoop]: Abstraction has 1679 states and 2079 transitions. [2020-09-25 09:06:41,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2079 transitions. [2020-09-25 09:06:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 09:06:41,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:41,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 09:06:41,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:41,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-25 09:06:41,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:41,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682252300] [2020-09-25 09:06:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:41,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:41,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:44,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:46,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:46,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 09:06:46,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 09:06:46,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:46,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:06:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 09:06:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:46,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:46,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:46,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:46,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:46,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:06:46,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:46,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:46,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:46,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:46,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:46,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 09:06:46,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:46,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:06:46,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:06:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:47,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:47,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 09:06:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:47,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:06:47,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:47,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682252300] [2020-09-25 09:06:47,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:47,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:06:47,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837294483] [2020-09-25 09:06:47,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:47,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:47,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:47,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:47,293 INFO L87 Difference]: Start difference. First operand 1679 states and 2079 transitions. Second operand 8 states. [2020-09-25 09:06:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:50,618 INFO L93 Difference]: Finished difference Result 4363 states and 6080 transitions. [2020-09-25 09:06:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:50,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-09-25 09:06:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:50,640 INFO L225 Difference]: With dead ends: 4363 [2020-09-25 09:06:50,641 INFO L226 Difference]: Without dead ends: 2849 [2020-09-25 09:06:50,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:06:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2020-09-25 09:06:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2648. [2020-09-25 09:06:50,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2648 states. [2020-09-25 09:06:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3420 transitions. [2020-09-25 09:06:50,751 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3420 transitions. Word has length 222 [2020-09-25 09:06:50,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:50,752 INFO L479 AbstractCegarLoop]: Abstraction has 2648 states and 3420 transitions. [2020-09-25 09:06:50,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3420 transitions. [2020-09-25 09:06:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 09:06:50,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:50,759 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 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] [2020-09-25 09:06:50,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:50,759 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:50,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:50,760 INFO L82 PathProgramCache]: Analyzing trace with hash -931259862, now seen corresponding path program 1 times [2020-09-25 09:06:50,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:50,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294884657] [2020-09-25 09:06:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:51,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:55,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 09:06:55,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:55,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:06:55,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:55,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:06:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-09-25 09:06:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:06:55,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:55,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:55,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:55,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:55,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:55,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:06:55,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:55,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:55,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:56,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 09:06:56,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 09:06:56,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:56,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 09:06:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 09:06:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:56,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:56,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 09:06:56,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:56,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:06:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 126 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:56,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294884657] [2020-09-25 09:06:56,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:56,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:06:56,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378034100] [2020-09-25 09:06:56,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:56,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:56,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:56,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:56,293 INFO L87 Difference]: Start difference. First operand 2648 states and 3420 transitions. Second operand 8 states. [2020-09-25 09:06:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:59,604 INFO L93 Difference]: Finished difference Result 7489 states and 10055 transitions. [2020-09-25 09:06:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:59,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2020-09-25 09:06:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:59,637 INFO L225 Difference]: With dead ends: 7489 [2020-09-25 09:06:59,638 INFO L226 Difference]: Without dead ends: 5006 [2020-09-25 09:06:59,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:06:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2020-09-25 09:06:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4596. [2020-09-25 09:06:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4596 states. [2020-09-25 09:06:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4596 states to 4596 states and 6042 transitions. [2020-09-25 09:06:59,785 INFO L78 Accepts]: Start accepts. Automaton has 4596 states and 6042 transitions. Word has length 242 [2020-09-25 09:06:59,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:59,786 INFO L479 AbstractCegarLoop]: Abstraction has 4596 states and 6042 transitions. [2020-09-25 09:06:59,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4596 states and 6042 transitions. [2020-09-25 09:06:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-25 09:06:59,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:59,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 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] [2020-09-25 09:06:59,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:59,801 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:59,801 INFO L82 PathProgramCache]: Analyzing trace with hash -372076015, now seen corresponding path program 1 times [2020-09-25 09:06:59,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:59,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065633833] [2020-09-25 09:06:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:00,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:00,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking...