/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:26,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:26,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:26,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:26,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:26,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:26,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:26,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:26,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:26,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:26,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:26,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:26,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:26,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:26,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:26,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:26,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:26,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:26,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:26,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:26,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:26,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:26,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:26,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:26,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:26,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:26,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:26,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:26,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:26,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:26,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:26,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:26,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:26,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:26,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:26,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:26,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:26,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:26,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:26,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:26,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:26,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:04:26,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:26,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:26,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:26,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:26,694 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:26,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:26,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:26,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:26,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:26,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:26,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:26,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:26,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:26,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:26,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:26,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:26,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:26,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:26,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:26,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:26,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:26,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:26,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:26,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:26,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:26,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:26,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:26,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:26,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:26,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:04:27,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:27,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:27,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:27,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:27,208 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:27,209 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 09:04:27,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abbda7c26/ca2ee75e1e874490a850e87badfcc378/FLAGc3b050b7d [2020-09-25 09:04:27,915 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:27,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 09:04:27,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abbda7c26/ca2ee75e1e874490a850e87badfcc378/FLAGc3b050b7d [2020-09-25 09:04:28,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abbda7c26/ca2ee75e1e874490a850e87badfcc378 [2020-09-25 09:04:28,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:28,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:28,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:28,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:28,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:28,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4940f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:28, skipping insertion in model container [2020-09-25 09:04:28,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:28" (1/1) ... [2020-09-25 09:04:28,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:28,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:28,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:28,760 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:29,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:29,041 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:29,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29 WrapperNode [2020-09-25 09:04:29,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:29,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:29,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:29,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:29,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (1/1) ... [2020-09-25 09:04:29,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (1/1) ... [2020-09-25 09:04:29,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (1/1) ... [2020-09-25 09:04:29,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (1/1) ... [2020-09-25 09:04:29,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (1/1) ... [2020-09-25 09:04:29,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (1/1) ... [2020-09-25 09:04:29,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (1/1) ... [2020-09-25 09:04:29,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:29,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:29,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:29,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:29,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:29,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:29,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:29,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:29,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:30,668 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:30,669 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:30,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:30 BoogieIcfgContainer [2020-09-25 09:04:30,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:30,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:30,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:30,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:30,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:28" (1/3) ... [2020-09-25 09:04:30,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d2e0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:30, skipping insertion in model container [2020-09-25 09:04:30,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:29" (2/3) ... [2020-09-25 09:04:30,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d2e0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:30, skipping insertion in model container [2020-09-25 09:04:30,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:30" (3/3) ... [2020-09-25 09:04:30,687 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-09-25 09:04:30,698 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:30,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:30,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:30,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:30,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:30,766 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:30,766 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:30,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:30,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:30,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:30,767 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:04:30,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 09:04:30,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:30,818 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] [2020-09-25 09:04:30,818 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:30,826 INFO L82 PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times [2020-09-25 09:04:30,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:30,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370906493] [2020-09-25 09:04:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:32,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:32,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:04:32,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-25 09:04:32,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:32,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:04:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:04:32,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:04:32,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:32,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:32,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:32,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:32,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:32,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:04:32,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:32,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:04:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:32,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370906493] [2020-09-25 09:04:32,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:32,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:32,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280302195] [2020-09-25 09:04:32,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:32,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:32,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:32,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:32,269 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:04:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:34,144 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:04:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:34,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-09-25 09:04:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:34,177 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:04:34,177 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:04:34,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:04:34,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:04:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:04:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:04:34,286 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 78 [2020-09-25 09:04:34,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:34,287 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:04:34,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:04:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 09:04:34,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:34,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:34,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:34,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:34,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:34,298 INFO L82 PathProgramCache]: Analyzing trace with hash 970656551, now seen corresponding path program 1 times [2020-09-25 09:04:34,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:34,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610382136] [2020-09-25 09:04:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:39,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 09:04:39,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4881 [2020-09-25 09:04:39,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:39,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:04:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 09:04:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:39,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:39,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:04:39,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:39,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:39,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:39,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:04:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:39,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:39,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:39,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:04:39,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 09:04:39,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:39,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:04:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:39,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610382136] [2020-09-25 09:04:39,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:39,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:39,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933382663] [2020-09-25 09:04:39,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:39,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:39,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:39,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:39,728 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 09:04:41,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:41,564 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 09:04:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:04:41,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 09:04:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:41,572 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:04:41,573 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 09:04:41,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 09:04:41,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 09:04:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:04:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 09:04:41,613 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 157 [2020-09-25 09:04:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:41,614 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 09:04:41,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 09:04:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 09:04:41,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:41,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:04:41,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:41,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:41,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1315129595, now seen corresponding path program 1 times [2020-09-25 09:04:41,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:41,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388837870] [2020-09-25 09:04:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:41,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:46,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 09:04:46,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:46,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:04:46,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:46,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 09:04:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 09:04:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:46,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:46,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:46,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:04:46,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:46,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:46,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:46,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:04:46,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 09:04:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:46,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:04:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:46,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388837870] [2020-09-25 09:04:46,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:46,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:46,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613027446] [2020-09-25 09:04:46,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:46,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:46,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:46,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:46,936 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 09:04:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:48,880 INFO L93 Difference]: Finished difference Result 1553 states and 1986 transitions. [2020-09-25 09:04:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:48,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 09:04:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:48,886 INFO L225 Difference]: With dead ends: 1553 [2020-09-25 09:04:48,887 INFO L226 Difference]: Without dead ends: 1023 [2020-09-25 09:04:48,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-09-25 09:04:48,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1001. [2020-09-25 09:04:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-09-25 09:04:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1222 transitions. [2020-09-25 09:04:48,921 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1222 transitions. Word has length 167 [2020-09-25 09:04:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:48,921 INFO L479 AbstractCegarLoop]: Abstraction has 1001 states and 1222 transitions. [2020-09-25 09:04:48,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1222 transitions. [2020-09-25 09:04:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 09:04:48,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:48,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:04:48,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:48,926 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:48,927 INFO L82 PathProgramCache]: Analyzing trace with hash -8332915, now seen corresponding path program 1 times [2020-09-25 09:04:48,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:48,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739766383] [2020-09-25 09:04:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 09:04:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:04:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-09-25 09:04:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:04:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:04:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:51,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:51,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:51,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:51,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:04:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:04:51,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 09:04:51,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:04:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:51,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739766383] [2020-09-25 09:04:51,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:51,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:04:51,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209456830] [2020-09-25 09:04:51,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:51,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:51,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:51,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:51,656 INFO L87 Difference]: Start difference. First operand 1001 states and 1222 transitions. Second operand 7 states. [2020-09-25 09:04:53,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:53,884 INFO L93 Difference]: Finished difference Result 2209 states and 2822 transitions. [2020-09-25 09:04:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:04:53,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-25 09:04:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:53,896 INFO L225 Difference]: With dead ends: 2209 [2020-09-25 09:04:53,896 INFO L226 Difference]: Without dead ends: 1373 [2020-09-25 09:04:53,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-09-25 09:04:53,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1329. [2020-09-25 09:04:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-09-25 09:04:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1584 transitions. [2020-09-25 09:04:53,961 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1584 transitions. Word has length 169 [2020-09-25 09:04:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:53,962 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1584 transitions. [2020-09-25 09:04:53,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1584 transitions. [2020-09-25 09:04:53,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 09:04:53,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:53,969 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:53,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:53,970 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:53,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:53,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1558755997, now seen corresponding path program 1 times [2020-09-25 09:04:53,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:53,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583487921] [2020-09-25 09:04:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:59,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 09:04:59,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-09-25 09:04:59,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:59,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:04:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 09:04:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:59,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:59,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:04:59,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:59,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:59,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:59,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:59,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:04:59,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 09:04:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:59,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:04:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:04:59,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:59,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:04:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:59,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:04:59,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:59,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 09:04:59,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:59,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:04:59,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 141 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:00,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583487921] [2020-09-25 09:05:00,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:00,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:05:00,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550460150] [2020-09-25 09:05:00,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:05:00,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:00,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:05:00,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:05:00,052 INFO L87 Difference]: Start difference. First operand 1329 states and 1584 transitions. Second operand 9 states. [2020-09-25 09:05:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:06,207 INFO L93 Difference]: Finished difference Result 4440 states and 5649 transitions. [2020-09-25 09:05:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 09:05:06,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-09-25 09:05:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:06,230 INFO L225 Difference]: With dead ends: 4440 [2020-09-25 09:05:06,230 INFO L226 Difference]: Without dead ends: 3276 [2020-09-25 09:05:06,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:05:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2020-09-25 09:05:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2912. [2020-09-25 09:05:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2912 states. [2020-09-25 09:05:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 3583 transitions. [2020-09-25 09:05:06,338 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 3583 transitions. Word has length 248 [2020-09-25 09:05:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:06,338 INFO L479 AbstractCegarLoop]: Abstraction has 2912 states and 3583 transitions. [2020-09-25 09:05:06,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:05:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 3583 transitions. [2020-09-25 09:05:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 09:05:06,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:06,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:06,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:06,348 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:06,349 INFO L82 PathProgramCache]: Analyzing trace with hash 806703639, now seen corresponding path program 1 times [2020-09-25 09:05:06,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:06,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196218686] [2020-09-25 09:05:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:07,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:11,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:11,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 09:05:11,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 09:05:11,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-25 09:05:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:11,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:11,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:11,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:05:11,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:11,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:11,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:11,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:11,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:11,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:11,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:11,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 09:05:11,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:11,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:11,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:11,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:11,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:05:11,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:11,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:05:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:12,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 09:05:12,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:12,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-09-25 09:05:12,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:12,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 09:05:12,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 09:05:12,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196218686] [2020-09-25 09:05:12,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:12,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:12,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442393488] [2020-09-25 09:05:12,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:12,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:12,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:12,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:12,553 INFO L87 Difference]: Start difference. First operand 2912 states and 3583 transitions. Second operand 10 states. [2020-09-25 09:05:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:15,321 INFO L93 Difference]: Finished difference Result 6309 states and 7942 transitions. [2020-09-25 09:05:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:05:15,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 279 [2020-09-25 09:05:15,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:15,343 INFO L225 Difference]: With dead ends: 6309 [2020-09-25 09:05:15,343 INFO L226 Difference]: Without dead ends: 3533 [2020-09-25 09:05:15,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:05:15,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2020-09-25 09:05:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 3513. [2020-09-25 09:05:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-09-25 09:05:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4301 transitions. [2020-09-25 09:05:15,462 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4301 transitions. Word has length 279 [2020-09-25 09:05:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:15,462 INFO L479 AbstractCegarLoop]: Abstraction has 3513 states and 4301 transitions. [2020-09-25 09:05:15,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4301 transitions.