/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=WIDEST --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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:19:10,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:19:10,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:19:10,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:19:10,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:19:10,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:19:10,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:19:10,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:19:10,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:19:10,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:19:10,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:19:10,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:19:10,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:19:10,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:19:10,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:19:10,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:19:10,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:19:10,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:19:10,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:19:10,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:19:10,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:19:10,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:19:10,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:19:10,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:19:10,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:19:10,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:19:10,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:19:10,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:19:10,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:19:10,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:19:10,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:19:10,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:19:10,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:19:10,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:19:10,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:19:10,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:19:10,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:19:10,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:19:10,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:19:10,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:19:10,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:19:10,676 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 03:19:10,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:19:10,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:19:10,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:19:10,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:19:10,706 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:19:10,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:19:10,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:19:10,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:19:10,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:19:10,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:19:10,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:19:10,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:19:10,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:19:10,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:19:10,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:19:10,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:19:10,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:19:10,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:19:10,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:19:10,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:19:10,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:19:10,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:19:10,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:19:10,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:19:10,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:19:10,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:19:10,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:19:10,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:19:10,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:19:10,711 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:19:11,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:19:11,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:19:11,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:19:11,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:19:11,229 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:19:11,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 03:19:11,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d6707fb7/8cedfffc289549f0826b63814a013730/FLAG3b3e5d241 [2020-09-25 03:19:12,009 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:19:12,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 03:19:12,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d6707fb7/8cedfffc289549f0826b63814a013730/FLAG3b3e5d241 [2020-09-25 03:19:12,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d6707fb7/8cedfffc289549f0826b63814a013730 [2020-09-25 03:19:12,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:19:12,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:19:12,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:19:12,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:19:12,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:19:12,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:19:12" (1/1) ... [2020-09-25 03:19:12,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442b9b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:12, skipping insertion in model container [2020-09-25 03:19:12,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:19:12" (1/1) ... [2020-09-25 03:19:12,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:19:12,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:19:12,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:19:12,870 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:19:12,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:19:13,003 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:19:13,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13 WrapperNode [2020-09-25 03:19:13,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:19:13,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:19:13,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:19:13,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:19:13,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (1/1) ... [2020-09-25 03:19:13,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (1/1) ... [2020-09-25 03:19:13,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (1/1) ... [2020-09-25 03:19:13,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (1/1) ... [2020-09-25 03:19:13,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (1/1) ... [2020-09-25 03:19:13,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (1/1) ... [2020-09-25 03:19:13,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (1/1) ... [2020-09-25 03:19:13,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:19:13,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:19:13,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:19:13,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:19:13,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (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 03:19:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:19:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:19:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 03:19:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:19:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 03:19:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:19:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:19:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:19:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:19:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:19:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:19:14,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:19:14,602 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:19:14,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:19:14 BoogieIcfgContainer [2020-09-25 03:19:14,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:19:14,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:19:14,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:19:14,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:19:14,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:19:12" (1/3) ... [2020-09-25 03:19:14,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b751b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:19:14, skipping insertion in model container [2020-09-25 03:19:14,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:19:13" (2/3) ... [2020-09-25 03:19:14,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b751b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:19:14, skipping insertion in model container [2020-09-25 03:19:14,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:19:14" (3/3) ... [2020-09-25 03:19:14,622 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label25.c [2020-09-25 03:19:14,635 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:19:14,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:19:14,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:19:14,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:19:14,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:19:14,708 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:19:14,708 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:19:14,708 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:19:14,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:19:14,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:19:14,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:19:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 03:19:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 03:19:14,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:19:14,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:19:14,767 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:19:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:19:14,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1730766665, now seen corresponding path program 1 times [2020-09-25 03:19:14,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:19:14,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527319384] [2020-09-25 03:19:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:19:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:18,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:20,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:20,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 03:19:20,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:19:20,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:19:20,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:19:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:19:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 03:19:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 03:19:20,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:19:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:19:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:19:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 03:19:20,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:19:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:19:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 03:19:20,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:20,433 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 03:19:20,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527319384] [2020-09-25 03:19:20,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:19:20,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:19:20,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403566823] [2020-09-25 03:19:20,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:19:20,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:19:20,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:19:20,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:19:20,477 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 03:19:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:19:22,747 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 03:19:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:19:22,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 03:19:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:19:22,781 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 03:19:22,782 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 03:19:22,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:19:22,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 03:19:22,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 03:19:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 03:19:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 03:19:22,945 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 160 [2020-09-25 03:19:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:19:22,946 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 03:19:22,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:19:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 03:19:22,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 03:19:22,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:19:22,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:22,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:19:22,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:19:22,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:19:22,959 INFO L82 PathProgramCache]: Analyzing trace with hash -859680355, now seen corresponding path program 1 times [2020-09-25 03:19:22,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:19:22,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400864465] [2020-09-25 03:19:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:19:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:28,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:28,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 03:19:28,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:19:28,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:19:28,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:19:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:19:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 03:19:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:19:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:28,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:28,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:19:28,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:19:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 03:19:28,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:28,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:19:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:19:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:19:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:19:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:19:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:28,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:28,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:19:28,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:19:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 03:19:28,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:19:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:19:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 03:19:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:19:28,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400864465] [2020-09-25 03:19:28,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:19:28,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:19:28,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594783636] [2020-09-25 03:19:28,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:19:28,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:19:28,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:19:28,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:19:28,411 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 7 states. [2020-09-25 03:19:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:19:31,132 INFO L93 Difference]: Finished difference Result 1775 states and 2318 transitions. [2020-09-25 03:19:31,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:19:31,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-09-25 03:19:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:19:31,143 INFO L225 Difference]: With dead ends: 1775 [2020-09-25 03:19:31,143 INFO L226 Difference]: Without dead ends: 1132 [2020-09-25 03:19:31,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:19:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-09-25 03:19:31,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1120. [2020-09-25 03:19:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2020-09-25 03:19:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1466 transitions. [2020-09-25 03:19:31,202 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1466 transitions. Word has length 178 [2020-09-25 03:19:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:19:31,203 INFO L479 AbstractCegarLoop]: Abstraction has 1120 states and 1466 transitions. [2020-09-25 03:19:31,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:19:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1466 transitions. [2020-09-25 03:19:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 03:19:31,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:19:31,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:31,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:19:31,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:19:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:19:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1129646447, now seen corresponding path program 1 times [2020-09-25 03:19:31,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:19:31,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467009477] [2020-09-25 03:19:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:19:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:32,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:36,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:36,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 03:19:36,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:19:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:19:36,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:19:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 03:19:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 03:19:36,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:19:36,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:19:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:36,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:36,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:19:36,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:19:36,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:19:36,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:19:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:19:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:19:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 50 [2020-09-25 03:19:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:19:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:36,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:36,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:19:36,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:19:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 03:19:36,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:19:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:19:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:19:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:19:36,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467009477] [2020-09-25 03:19:36,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:19:36,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 03:19:36,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703509153] [2020-09-25 03:19:36,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:19:36,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:19:36,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:19:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:19:36,616 INFO L87 Difference]: Start difference. First operand 1120 states and 1466 transitions. Second operand 5 states. [2020-09-25 03:19:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:19:38,605 INFO L93 Difference]: Finished difference Result 2834 states and 3829 transitions. [2020-09-25 03:19:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:19:38,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 03:19:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:19:38,621 INFO L225 Difference]: With dead ends: 2834 [2020-09-25 03:19:38,621 INFO L226 Difference]: Without dead ends: 1359 [2020-09-25 03:19:38,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:19:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2020-09-25 03:19:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1196. [2020-09-25 03:19:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 03:19:38,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1450 transitions. [2020-09-25 03:19:38,687 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1450 transitions. Word has length 198 [2020-09-25 03:19:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:19:38,689 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1450 transitions. [2020-09-25 03:19:38,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:19:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1450 transitions. [2020-09-25 03:19:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 03:19:38,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:19:38,700 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:38,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:19:38,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:19:38,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:19:38,701 INFO L82 PathProgramCache]: Analyzing trace with hash 380278058, now seen corresponding path program 1 times [2020-09-25 03:19:38,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:19:38,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826979384] [2020-09-25 03:19:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:19:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:38,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:43,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:43,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 03:19:43,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:19:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 03:19:43,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:19:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:19:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-25 03:19:43,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:19:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:19:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:19:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:19:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:19:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:19:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:19:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:19:44,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:19:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:44,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:44,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:44,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:44,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:19:44,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:19:44,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 03:19:44,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:19:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:19:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:19:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 03:19:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:44,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:44,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:19:44,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:19:44,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 03:19:44,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:19:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:19:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:19:44,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:19:44,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826979384] [2020-09-25 03:19:44,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:19:44,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:19:44,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533317155] [2020-09-25 03:19:44,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:19:44,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:19:44,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:19:44,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:19:44,880 INFO L87 Difference]: Start difference. First operand 1196 states and 1450 transitions. Second operand 13 states. [2020-09-25 03:19:45,420 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-09-25 03:19:46,616 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-09-25 03:19:48,399 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-09-25 03:19:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:19:49,792 INFO L93 Difference]: Finished difference Result 3770 states and 4838 transitions. [2020-09-25 03:19:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:19:49,792 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 224 [2020-09-25 03:19:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:19:49,807 INFO L225 Difference]: With dead ends: 3770 [2020-09-25 03:19:49,807 INFO L226 Difference]: Without dead ends: 2328 [2020-09-25 03:19:49,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-09-25 03:19:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2020-09-25 03:19:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2154. [2020-09-25 03:19:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-09-25 03:19:49,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2604 transitions. [2020-09-25 03:19:49,904 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2604 transitions. Word has length 224 [2020-09-25 03:19:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:19:49,904 INFO L479 AbstractCegarLoop]: Abstraction has 2154 states and 2604 transitions. [2020-09-25 03:19:49,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:19:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2604 transitions. [2020-09-25 03:19:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 03:19:49,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:19:49,917 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:19:49,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:19:49,917 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:19:49,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:19:49,918 INFO L82 PathProgramCache]: Analyzing trace with hash -634128520, now seen corresponding path program 1 times [2020-09-25 03:19:49,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:19:49,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720588502] [2020-09-25 03:19:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:19:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:54,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:54,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 03:19:54,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:19:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 03:19:54,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:19:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:19:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-09-25 03:19:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:19:55,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:19:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:55,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:55,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:19:55,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:19:55,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:19:55,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:55,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:19:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:19:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:19:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:19:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:55,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:55,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 03:19:55,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:19:55,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 03:19:55,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:19:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:19:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:19:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:19:55,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 03:19:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:19:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:19:55,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:19:55,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:19:55,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:19:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 03:19:55,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:19:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:19:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:19:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:19:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:19:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 80 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:19:56,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720588502] [2020-09-25 03:19:56,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:19:56,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:19:56,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178878192] [2020-09-25 03:19:56,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:19:56,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:19:56,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:19:56,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:19:56,353 INFO L87 Difference]: Start difference. First operand 2154 states and 2604 transitions. Second operand 13 states.