/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:53:55,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:53:55,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:53:55,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:53:55,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:53:55,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:53:55,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:53:55,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:53:55,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:53:55,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:53:55,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:53:55,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:53:55,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:53:55,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:53:55,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:53:55,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:53:55,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:53:55,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:53:55,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:53:55,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:53:55,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:53:55,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:53:55,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:53:55,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:53:55,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:53:55,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:53:55,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:53:55,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:53:55,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:53:55,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:53:55,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:53:55,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:53:55,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:53:55,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:53:55,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:53:55,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:53:55,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:53:55,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:53:55,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:53:55,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:53:55,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:53:55,695 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 07:53:55,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:53:55,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:53:55,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:53:55,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:53:55,749 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:53:55,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:53:55,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:53:55,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:53:55,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:53:55,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:53:55,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:53:55,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:53:55,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:53:55,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:53:55,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:53:55,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:53:55,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:53:55,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:53:55,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:53:55,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:53:55,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:53:55,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:53:55,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:53:55,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:53:55,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:53:55,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:53:55,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:53:55,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:53:55,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:53:55,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:53:56,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:53:56,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:53:56,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:53:56,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:53:56,221 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:53:56,222 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 07:53:56,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec793af5/72cdef48aa09441d8f5d3c74b5f029ac/FLAGa1d6341b9 [2020-09-25 07:53:56,926 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:53:56,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 07:53:56,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec793af5/72cdef48aa09441d8f5d3c74b5f029ac/FLAGa1d6341b9 [2020-09-25 07:53:57,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec793af5/72cdef48aa09441d8f5d3c74b5f029ac [2020-09-25 07:53:57,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:53:57,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:53:57,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:53:57,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:53:57,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:53:57,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:53:57" (1/1) ... [2020-09-25 07:53:57,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:57, skipping insertion in model container [2020-09-25 07:53:57,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:53:57" (1/1) ... [2020-09-25 07:53:57,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:53:57,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:53:57,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:53:57,759 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:53:58,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:53:58,032 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:53:58,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58 WrapperNode [2020-09-25 07:53:58,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:53:58,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:53:58,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:53:58,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:53:58,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (1/1) ... [2020-09-25 07:53:58,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (1/1) ... [2020-09-25 07:53:58,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (1/1) ... [2020-09-25 07:53:58,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (1/1) ... [2020-09-25 07:53:58,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (1/1) ... [2020-09-25 07:53:58,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (1/1) ... [2020-09-25 07:53:58,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (1/1) ... [2020-09-25 07:53:58,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:53:58,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:53:58,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:53:58,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:53:58,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (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 07:53:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:53:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:53:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:53:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:53:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:53:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:53:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:53:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:53:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:53:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:53:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:53:59,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:53:59,552 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:53:59,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:53:59 BoogieIcfgContainer [2020-09-25 07:53:59,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:53:59,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:53:59,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:53:59,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:53:59,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:53:57" (1/3) ... [2020-09-25 07:53:59,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c7164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:53:59, skipping insertion in model container [2020-09-25 07:53:59,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:58" (2/3) ... [2020-09-25 07:53:59,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c7164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:53:59, skipping insertion in model container [2020-09-25 07:53:59,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:53:59" (3/3) ... [2020-09-25 07:53:59,571 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-09-25 07:53:59,582 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:53:59,593 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:53:59,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:53:59,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:53:59,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:53:59,656 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:53:59,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:53:59,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:53:59,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:53:59,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:53:59,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:53:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:53:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 07:53:59,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:59,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:59,711 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:59,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:59,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1835465527, now seen corresponding path program 1 times [2020-09-25 07:53:59,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:59,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760628592] [2020-09-25 07:53:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:01,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:05,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:05,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 07:54:05,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:54:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-09-25 07:54:05,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:05,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:54:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 07:54:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 07:54:05,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:05,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:05,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:05,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:54:05,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:05,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:54:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:54:05,385 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 07:54:05,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760628592] [2020-09-25 07:54:05,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:05,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:54:05,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596185284] [2020-09-25 07:54:05,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:54:05,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:05,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:54:05,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:54:05,421 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:54:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:07,951 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 07:54:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:54:07,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-09-25 07:54:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:07,991 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 07:54:07,991 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 07:54:08,000 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 07:54:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 07:54:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 07:54:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 07:54:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 07:54:08,112 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 128 [2020-09-25 07:54:08,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:08,113 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 07:54:08,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:54:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 07:54:08,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 07:54:08,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:08,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:08,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:54:08,122 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:08,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:08,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1758478109, now seen corresponding path program 1 times [2020-09-25 07:54:08,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:08,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501453674] [2020-09-25 07:54:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:08,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:08,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:08,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:13,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:13,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 07:54:13,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:54:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:54:13,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:13,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:54:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 07:54:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:13,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:13,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:54:13,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:13,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:13,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:13,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:13,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:54:13,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:13,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:54:13,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:13,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:54:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:13,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501453674] [2020-09-25 07:54:13,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:13,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:13,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461999551] [2020-09-25 07:54:13,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:13,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:13,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:13,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:13,491 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 07:54:15,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:15,476 INFO L93 Difference]: Finished difference Result 1608 states and 2068 transitions. [2020-09-25 07:54:15,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:54:15,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 07:54:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:15,483 INFO L225 Difference]: With dead ends: 1608 [2020-09-25 07:54:15,483 INFO L226 Difference]: Without dead ends: 971 [2020-09-25 07:54:15,487 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 07:54:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-25 07:54:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 961. [2020-09-25 07:54:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-25 07:54:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-25 07:54:15,535 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 146 [2020-09-25 07:54:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:15,536 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-25 07:54:15,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-25 07:54:15,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 07:54:15,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:15,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:15,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:54:15,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:15,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:15,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1227074990, now seen corresponding path program 1 times [2020-09-25 07:54:15,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:15,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082636837] [2020-09-25 07:54:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:15,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:15,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:20,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:20,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 07:54:20,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:54:20,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:54:20,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:20,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:54:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:54:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:20,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:20,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:20,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:20,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:54:20,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:20,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:54:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:20,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:20,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:54:20,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 07:54:20,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:20,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:54:20,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 07:54:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:20,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082636837] [2020-09-25 07:54:20,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:20,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:54:20,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820218085] [2020-09-25 07:54:20,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:54:20,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:20,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:54:20,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:54:20,844 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 7 states. [2020-09-25 07:54:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:23,252 INFO L93 Difference]: Finished difference Result 2761 states and 3633 transitions. [2020-09-25 07:54:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:54:23,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 07:54:23,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:23,271 INFO L225 Difference]: With dead ends: 2761 [2020-09-25 07:54:23,272 INFO L226 Difference]: Without dead ends: 1822 [2020-09-25 07:54:23,278 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 07:54:23,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-09-25 07:54:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1719. [2020-09-25 07:54:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1719 states. [2020-09-25 07:54:23,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2191 transitions. [2020-09-25 07:54:23,352 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2191 transitions. Word has length 172 [2020-09-25 07:54:23,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:23,352 INFO L479 AbstractCegarLoop]: Abstraction has 1719 states and 2191 transitions. [2020-09-25 07:54:23,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:54:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2191 transitions. [2020-09-25 07:54:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 07:54:23,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:23,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:23,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:54:23,362 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:23,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:23,362 INFO L82 PathProgramCache]: Analyzing trace with hash -285157092, now seen corresponding path program 1 times [2020-09-25 07:54:23,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:23,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721427506] [2020-09-25 07:54:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:27,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:28,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:28,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 07:54:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:54:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:54:28,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:28,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:54:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 07:54:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:54:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:54:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:28,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:28,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:28,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:54:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:28,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:28,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:28,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:28,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:54:28,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:54:28,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:28,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:54:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:54:28,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 07:54:28,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:28,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:54:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:54:28,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:54:29,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721427506] [2020-09-25 07:54:29,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:29,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:54:29,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160220920] [2020-09-25 07:54:29,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:54:29,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:54:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:54:29,143 INFO L87 Difference]: Start difference. First operand 1719 states and 2191 transitions. Second operand 8 states. [2020-09-25 07:54:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:33,298 INFO L93 Difference]: Finished difference Result 5548 states and 7543 transitions. [2020-09-25 07:54:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:54:33,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 07:54:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:33,324 INFO L225 Difference]: With dead ends: 5548 [2020-09-25 07:54:33,325 INFO L226 Difference]: Without dead ends: 3665 [2020-09-25 07:54:33,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:54:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2020-09-25 07:54:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3597. [2020-09-25 07:54:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3597 states. [2020-09-25 07:54:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 4477 transitions. [2020-09-25 07:54:33,456 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 4477 transitions. Word has length 184 [2020-09-25 07:54:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:33,457 INFO L479 AbstractCegarLoop]: Abstraction has 3597 states and 4477 transitions. [2020-09-25 07:54:33,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:54:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 4477 transitions. [2020-09-25 07:54:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 07:54:33,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:33,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:33,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:54:33,470 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:33,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:33,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2137284262, now seen corresponding path program 1 times [2020-09-25 07:54:33,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:33,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221523396] [2020-09-25 07:54:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:33,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:38,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:38,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 07:54:38,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:54:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:54:38,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:38,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:38,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:38,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:54:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 07:54:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:38,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:38,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:38,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:38,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:38,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:54:38,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:38,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:54:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:38,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:38,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:54:38,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:54:38,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:38,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:54:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:38,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:54:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:38,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:38,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:38,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:54:38,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:54:38,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 07:54:38,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:38,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:38,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:38,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:54:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 07:54:38,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221523396] [2020-09-25 07:54:38,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:38,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:38,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578664148] [2020-09-25 07:54:38,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:38,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:38,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:38,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:38,970 INFO L87 Difference]: Start difference. First operand 3597 states and 4477 transitions. Second operand 5 states. [2020-09-25 07:54:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:40,952 INFO L93 Difference]: Finished difference Result 6249 states and 7846 transitions. [2020-09-25 07:54:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:54:40,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 07:54:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:40,968 INFO L225 Difference]: With dead ends: 6249 [2020-09-25 07:54:40,968 INFO L226 Difference]: Without dead ends: 2514 [2020-09-25 07:54:40,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 07:54:40,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2020-09-25 07:54:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2192. [2020-09-25 07:54:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2192 states. [2020-09-25 07:54:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 2612 transitions. [2020-09-25 07:54:41,036 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 2612 transitions. Word has length 190 [2020-09-25 07:54:41,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:41,037 INFO L479 AbstractCegarLoop]: Abstraction has 2192 states and 2612 transitions. [2020-09-25 07:54:41,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 2612 transitions. [2020-09-25 07:54:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 07:54:41,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:41,044 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, 1, 1, 1, 1] [2020-09-25 07:54:41,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:54:41,045 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:41,045 INFO L82 PathProgramCache]: Analyzing trace with hash -852027348, now seen corresponding path program 1 times [2020-09-25 07:54:41,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:41,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412360630] [2020-09-25 07:54:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:41,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:46,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 07:54:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:54:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:54:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:46,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:54:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:54:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:54:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:46,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:46,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:46,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:46,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:54:46,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:46,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:46,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:46,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:46,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:54:46,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:54:46,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:46,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:54:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:54:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 07:54:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:46,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:46,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:54:46,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 07:54:46,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:46,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:54:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:54:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:54:46,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412360630] [2020-09-25 07:54:46,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:46,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:54:46,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901606433] [2020-09-25 07:54:46,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:54:46,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:46,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:54:46,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:54:46,361 INFO L87 Difference]: Start difference. First operand 2192 states and 2612 transitions. Second operand 7 states.