/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/Problem02_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:03:20,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:03:20,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:03:20,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:03:20,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:03:20,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:03:20,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:03:20,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:03:20,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:03:20,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:03:20,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:03:20,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:03:20,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:03:20,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:03:20,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:03:20,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:03:20,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:03:20,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:03:20,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:03:20,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:03:20,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:03:20,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:03:20,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:03:20,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:03:20,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:03:20,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:03:20,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:03:20,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:03:20,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:03:20,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:03:20,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:03:20,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:03:20,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:03:20,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:03:20,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:03:20,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:03:20,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:03:20,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:03:20,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:03:20,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:03:20,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:03:20,770 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 09:03:20,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:03:20,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:03:20,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:03:20,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:03:20,822 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:03:20,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:03:20,823 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:03:20,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:03:20,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:03:20,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:03:20,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:03:20,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:03:20,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:03:20,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:03:20,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:03:20,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:03:20,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:03:20,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:03:20,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:03:20,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:03:20,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:03:20,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:20,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:03:20,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:03:20,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:03:20,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:03:20,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:03:20,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:03:20,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:03:20,829 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 09:03:21,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:03:21,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:03:21,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:03:21,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:03:21,294 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:03:21,295 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 09:03:21,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d238a3bf/7df98a990173422cbc1827016fdf3216/FLAG663b622cd [2020-09-25 09:03:22,047 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:03:22,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 09:03:22,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d238a3bf/7df98a990173422cbc1827016fdf3216/FLAG663b622cd [2020-09-25 09:03:22,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d238a3bf/7df98a990173422cbc1827016fdf3216 [2020-09-25 09:03:22,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:22,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:22,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:22,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:22,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:22,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:22" (1/1) ... [2020-09-25 09:03:22,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:22, skipping insertion in model container [2020-09-25 09:03:22,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:22" (1/1) ... [2020-09-25 09:03:22,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:22,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:22,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:22,877 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:23,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:23,126 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:23,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23 WrapperNode [2020-09-25 09:03:23,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:23,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:23,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:23,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:23,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (1/1) ... [2020-09-25 09:03:23,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (1/1) ... [2020-09-25 09:03:23,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (1/1) ... [2020-09-25 09:03:23,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (1/1) ... [2020-09-25 09:03:23,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (1/1) ... [2020-09-25 09:03:23,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (1/1) ... [2020-09-25 09:03:23,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (1/1) ... [2020-09-25 09:03:23,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:23,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:23,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:23,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:23,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (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 09:03:23,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:23,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:23,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:23,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:25,060 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:25,060 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:25,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:25 BoogieIcfgContainer [2020-09-25 09:03:25,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:25,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:25,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:25,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:25,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:22" (1/3) ... [2020-09-25 09:03:25,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:25, skipping insertion in model container [2020-09-25 09:03:25,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:23" (2/3) ... [2020-09-25 09:03:25,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:25, skipping insertion in model container [2020-09-25 09:03:25,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:25" (3/3) ... [2020-09-25 09:03:25,081 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-09-25 09:03:25,094 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:25,106 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:25,130 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:25,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:25,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:25,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:25,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:25,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:25,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:25,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:25,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:25,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 09:03:25,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:25,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:25,225 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:25,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:25,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1247500167, now seen corresponding path program 1 times [2020-09-25 09:03:25,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:25,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436210047] [2020-09-25 09:03:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:27,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:30,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 09:03:30,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:03:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:03:30,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:30,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:03:30,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 09:03:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:03:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:30,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:30,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:30,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 09:03:30,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:30,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:03:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:03:30,918 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 09:03:30,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436210047] [2020-09-25 09:03:30,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:30,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:03:30,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874658693] [2020-09-25 09:03:30,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:03:30,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:03:30,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:03:30,955 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:03:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:33,521 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 09:03:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:03:33,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-09-25 09:03:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:33,548 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 09:03:33,549 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 09:03:33,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 09:03:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 09:03:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 09:03:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 09:03:33,688 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 124 [2020-09-25 09:03:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:33,690 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 09:03:33,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:03:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 09:03:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 09:03:33,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:33,708 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:03:33,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:03:33,710 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2003096754, now seen corresponding path program 1 times [2020-09-25 09:03:33,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:33,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610629580] [2020-09-25 09:03:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:38,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:38,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:38,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 09:03:38,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:03:38,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:03:38,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:38,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:03:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:03:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:03:38,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:03:38,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:39,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:39,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:03:39,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:39,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:03:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:03:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:39,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:03:39,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:03:39,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:39,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:03:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:03:39,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610629580] [2020-09-25 09:03:39,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:39,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:03:39,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738364757] [2020-09-25 09:03:39,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:03:39,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:39,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:03:39,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:39,189 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 6 states. [2020-09-25 09:03:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:41,219 INFO L93 Difference]: Finished difference Result 1537 states and 1854 transitions. [2020-09-25 09:03:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:03:41,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-09-25 09:03:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:41,228 INFO L225 Difference]: With dead ends: 1537 [2020-09-25 09:03:41,228 INFO L226 Difference]: Without dead ends: 938 [2020-09-25 09:03:41,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-09-25 09:03:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 928. [2020-09-25 09:03:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2020-09-25 09:03:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1099 transitions. [2020-09-25 09:03:41,284 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1099 transitions. Word has length 141 [2020-09-25 09:03:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:41,285 INFO L479 AbstractCegarLoop]: Abstraction has 928 states and 1099 transitions. [2020-09-25 09:03:41,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:03:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1099 transitions. [2020-09-25 09:03:41,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 09:03:41,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:41,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:41,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:03:41,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:41,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash 10875444, now seen corresponding path program 1 times [2020-09-25 09:03:41,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:41,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23652038] [2020-09-25 09:03:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:41,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:46,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:46,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 09:03:46,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:03:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 09:03:46,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:46,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:03:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 09:03:46,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:46,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:46,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:46,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:03:46,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:46,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:46,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:46,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:46,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:03:46,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 09:03:46,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:46,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:03:46,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:46,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23652038] [2020-09-25 09:03:46,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:46,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:03:46,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184456364] [2020-09-25 09:03:46,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:03:46,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:46,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:03:46,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:46,678 INFO L87 Difference]: Start difference. First operand 928 states and 1099 transitions. Second operand 7 states. [2020-09-25 09:03:49,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:49,265 INFO L93 Difference]: Finished difference Result 2678 states and 3275 transitions. [2020-09-25 09:03:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:03:49,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-09-25 09:03:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:49,292 INFO L225 Difference]: With dead ends: 2678 [2020-09-25 09:03:49,292 INFO L226 Difference]: Without dead ends: 1772 [2020-09-25 09:03:49,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:03:49,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2020-09-25 09:03:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1672. [2020-09-25 09:03:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2020-09-25 09:03:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 1992 transitions. [2020-09-25 09:03:49,407 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 1992 transitions. Word has length 159 [2020-09-25 09:03:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:49,411 INFO L479 AbstractCegarLoop]: Abstraction has 1672 states and 1992 transitions. [2020-09-25 09:03:49,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:03:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 1992 transitions. [2020-09-25 09:03:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 09:03:49,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:49,426 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:49,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:03:49,426 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:49,431 INFO L82 PathProgramCache]: Analyzing trace with hash 253863597, now seen corresponding path program 1 times [2020-09-25 09:03:49,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:49,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304388565] [2020-09-25 09:03:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:49,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:51,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:54,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 09:03:54,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:03:54,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:03:54,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:54,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 09:03:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 09:03:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:54,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:54,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:54,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:54,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:03:54,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:54,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:54,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:54,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:03:54,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:03:54,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:54,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:54,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:54,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:54,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:03:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:54,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:03:54,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 09:03:54,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:54,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:03:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 09:03:54,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304388565] [2020-09-25 09:03:54,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:54,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:54,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510215308] [2020-09-25 09:03:54,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:54,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:54,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:54,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:54,954 INFO L87 Difference]: Start difference. First operand 1672 states and 1992 transitions. Second operand 5 states. [2020-09-25 09:03:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:57,014 INFO L93 Difference]: Finished difference Result 3202 states and 3848 transitions. [2020-09-25 09:03:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:57,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 09:03:57,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:57,025 INFO L225 Difference]: With dead ends: 3202 [2020-09-25 09:03:57,025 INFO L226 Difference]: Without dead ends: 1552 [2020-09-25 09:03:57,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:57,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2020-09-25 09:03:57,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1238. [2020-09-25 09:03:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-09-25 09:03:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1392 transitions. [2020-09-25 09:03:57,082 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1392 transitions. Word has length 175 [2020-09-25 09:03:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:57,083 INFO L479 AbstractCegarLoop]: Abstraction has 1238 states and 1392 transitions. [2020-09-25 09:03:57,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:57,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1392 transitions. [2020-09-25 09:03:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 09:03:57,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:57,088 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:57,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:03:57,089 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:57,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:57,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1970919067, now seen corresponding path program 1 times [2020-09-25 09:03:57,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:57,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664495414] [2020-09-25 09:03:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:02,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 09:04:02,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:04:02,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:02,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:04:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 09:04:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:02,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:02,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:02,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:04:02,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:02,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:02,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:04:02,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:04:02,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:02,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:04:02,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:02,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:04:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:02,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 09:04:02,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 09:04:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:02,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:04:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 09:04:02,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664495414] [2020-09-25 09:04:02,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:02,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:04:02,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147911641] [2020-09-25 09:04:02,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:02,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:02,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:02,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:02,500 INFO L87 Difference]: Start difference. First operand 1238 states and 1392 transitions. Second operand 7 states. [2020-09-25 09:04:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:05,331 INFO L93 Difference]: Finished difference Result 3576 states and 4113 transitions. [2020-09-25 09:04:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:05,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-09-25 09:04:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:05,344 INFO L225 Difference]: With dead ends: 3576 [2020-09-25 09:04:05,345 INFO L226 Difference]: Without dead ends: 2360 [2020-09-25 09:04:05,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 09:04:05,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2020-09-25 09:04:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2200. [2020-09-25 09:04:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-25 09:04:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2506 transitions. [2020-09-25 09:04:05,411 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2506 transitions. Word has length 186 [2020-09-25 09:04:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:05,412 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 2506 transitions. [2020-09-25 09:04:05,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2506 transitions. [2020-09-25 09:04:05,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 09:04:05,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:05,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:04:05,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:05,420 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1824646492, now seen corresponding path program 1 times [2020-09-25 09:04:05,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:05,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938653238] [2020-09-25 09:04:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:06,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:06,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:07,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking...