/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:20,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:20,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:20,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:20,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:20,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:20,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:20,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:20,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:20,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:20,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:20,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:20,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:20,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:20,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:20,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:20,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:20,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:20,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:20,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:20,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:20,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:20,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:20,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:20,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:20,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:20,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:20,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:20,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:20,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:20,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:20,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:20,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:20,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:20,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:20,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:20,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:20,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:20,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:20,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:20,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:20,211 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 10:12:20,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:20,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:20,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:20,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:20,248 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:20,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:20,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:20,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:20,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:20,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:20,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:20,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:20,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:20,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:20,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:20,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:20,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:20,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:20,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:20,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:20,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:20,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:20,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:20,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:20,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:20,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:20,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:20,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:20,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:20,253 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:12:20,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:20,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:20,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:20,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:20,758 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:20,759 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 10:12:20,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b537af3df/9c627f9d2590431ea7df0c63314f0950/FLAG885e90fb6 [2020-09-25 10:12:21,527 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:21,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 10:12:21,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b537af3df/9c627f9d2590431ea7df0c63314f0950/FLAG885e90fb6 [2020-09-25 10:12:21,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b537af3df/9c627f9d2590431ea7df0c63314f0950 [2020-09-25 10:12:21,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:21,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:21,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:21,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:21,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:21,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:21" (1/1) ... [2020-09-25 10:12:21,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:21, skipping insertion in model container [2020-09-25 10:12:21,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:21" (1/1) ... [2020-09-25 10:12:21,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:21,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:22,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:22,452 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:22,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:22,663 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:22,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22 WrapperNode [2020-09-25 10:12:22,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:22,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:22,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:22,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:22,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (1/1) ... [2020-09-25 10:12:22,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (1/1) ... [2020-09-25 10:12:22,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (1/1) ... [2020-09-25 10:12:22,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (1/1) ... [2020-09-25 10:12:22,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (1/1) ... [2020-09-25 10:12:22,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (1/1) ... [2020-09-25 10:12:22,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (1/1) ... [2020-09-25 10:12:22,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:22,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:22,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:22,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:22,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (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 10:12:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:22,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:24,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:24,414 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:24,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:24 BoogieIcfgContainer [2020-09-25 10:12:24,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:24,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:24,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:24,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:24,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:21" (1/3) ... [2020-09-25 10:12:24,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:24, skipping insertion in model container [2020-09-25 10:12:24,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:22" (2/3) ... [2020-09-25 10:12:24,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:24, skipping insertion in model container [2020-09-25 10:12:24,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:24" (3/3) ... [2020-09-25 10:12:24,435 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-25 10:12:24,450 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:24,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:24,490 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:24,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:24,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:24,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:24,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:24,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:24,532 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:24,532 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:24,532 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 10:12:24,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:24,580 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] [2020-09-25 10:12:24,581 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:24,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:24,589 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-25 10:12:24,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:24,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155607618] [2020-09-25 10:12:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:12:25,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-09-25 10:12:25,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:25,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:25,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:12:25,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:25,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:25,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:12:25,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:25,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:25,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:25,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:25,728 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 10:12:25,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155607618] [2020-09-25 10:12:25,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:25,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:25,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915006134] [2020-09-25 10:12:25,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:25,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:25,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:25,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:25,761 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:27,827 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 10:12:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:27,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 10:12:27,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:27,852 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 10:12:27,852 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 10:12:27,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 10:12:27,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 10:12:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 10:12:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 10:12:27,979 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-25 10:12:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:27,980 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 10:12:27,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 10:12:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 10:12:27,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:27,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:27,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:27,988 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:27,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-25 10:12:27,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:27,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67597901] [2020-09-25 10:12:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:32,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 10:12:32,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:32,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4287 [2020-09-25 10:12:32,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:32,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 10:12:32,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:32,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:32,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:32,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:12:32,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:32,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:32,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:32,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 10:12:32,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:32,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:32,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67597901] [2020-09-25 10:12:32,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:32,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:12:32,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101781381] [2020-09-25 10:12:32,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:12:32,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:32,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:12:32,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:32,896 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 7 states. [2020-09-25 10:12:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:35,570 INFO L93 Difference]: Finished difference Result 1378 states and 1768 transitions. [2020-09-25 10:12:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:12:35,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-09-25 10:12:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:35,577 INFO L225 Difference]: With dead ends: 1378 [2020-09-25 10:12:35,578 INFO L226 Difference]: Without dead ends: 849 [2020-09-25 10:12:35,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-09-25 10:12:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2020-09-25 10:12:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-25 10:12:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1084 transitions. [2020-09-25 10:12:35,628 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1084 transitions. Word has length 124 [2020-09-25 10:12:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:35,629 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1084 transitions. [2020-09-25 10:12:35,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:12:35,629 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1084 transitions. [2020-09-25 10:12:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 10:12:35,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:35,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:35,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:35,634 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:35,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:35,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-25 10:12:35,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:35,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173563497] [2020-09-25 10:12:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:35,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:37,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:40,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:12:40,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:40,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4696 [2020-09-25 10:12:40,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:40,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:40,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:40,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:40,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 10:12:40,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:40,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:40,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:12:40,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:40,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:40,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:40,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:40,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:40,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 10:12:40,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:40,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:40,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:40,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173563497] [2020-09-25 10:12:40,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:40,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:40,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733798082] [2020-09-25 10:12:40,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:40,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:40,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:40,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:40,930 INFO L87 Difference]: Start difference. First operand 847 states and 1084 transitions. Second operand 8 states. [2020-09-25 10:12:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:44,601 INFO L93 Difference]: Finished difference Result 2644 states and 3690 transitions. [2020-09-25 10:12:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:44,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-09-25 10:12:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:44,617 INFO L225 Difference]: With dead ends: 2644 [2020-09-25 10:12:44,617 INFO L226 Difference]: Without dead ends: 1962 [2020-09-25 10:12:44,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:12:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2020-09-25 10:12:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1521. [2020-09-25 10:12:44,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-09-25 10:12:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1999 transitions. [2020-09-25 10:12:44,694 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1999 transitions. Word has length 134 [2020-09-25 10:12:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:44,698 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 1999 transitions. [2020-09-25 10:12:44,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1999 transitions. [2020-09-25 10:12:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 10:12:44,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:44,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:44,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:44,712 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1117469357, now seen corresponding path program 1 times [2020-09-25 10:12:44,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:44,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902958063] [2020-09-25 10:12:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:49,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:49,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 10:12:49,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:49,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:12:49,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:49,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:49,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:12:49,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:49,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 10:12:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:50,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:50,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:50,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:50,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:12:50,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:50,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:50,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:50,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 10:12:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-25 10:12:50,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:50,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:12:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:50,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902958063] [2020-09-25 10:12:50,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:50,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:12:50,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601390573] [2020-09-25 10:12:50,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:12:50,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:50,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:12:50,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:50,939 INFO L87 Difference]: Start difference. First operand 1521 states and 1999 transitions. Second operand 12 states. [2020-09-25 10:12:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:54,066 INFO L93 Difference]: Finished difference Result 3563 states and 4863 transitions. [2020-09-25 10:12:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:54,066 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 191 [2020-09-25 10:12:54,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:54,079 INFO L225 Difference]: With dead ends: 3563 [2020-09-25 10:12:54,079 INFO L226 Difference]: Without dead ends: 2129 [2020-09-25 10:12:54,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:12:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2020-09-25 10:12:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1813. [2020-09-25 10:12:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 10:12:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2323 transitions. [2020-09-25 10:12:54,158 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2323 transitions. Word has length 191 [2020-09-25 10:12:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:54,160 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2323 transitions. [2020-09-25 10:12:54,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:12:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2323 transitions. [2020-09-25 10:12:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 10:12:54,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:54,168 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, 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] [2020-09-25 10:12:54,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:54,168 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash -815108683, now seen corresponding path program 1 times [2020-09-25 10:12:54,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:54,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177670303] [2020-09-25 10:12:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:54,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 10:12:59,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 10:12:59,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-09-25 10:12:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:59,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:59,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:12:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 10:12:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:12:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:12:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:00,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:13:00,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-25 10:13:00,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:00,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-25 10:13:00,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177670303] [2020-09-25 10:13:00,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:00,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:00,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050874657] [2020-09-25 10:13:00,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:00,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:00,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:00,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:00,242 INFO L87 Difference]: Start difference. First operand 1813 states and 2323 transitions. Second operand 10 states. [2020-09-25 10:13:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:03,798 INFO L93 Difference]: Finished difference Result 4292 states and 5714 transitions. [2020-09-25 10:13:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:03,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 220 [2020-09-25 10:13:03,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:03,813 INFO L225 Difference]: With dead ends: 4292 [2020-09-25 10:13:03,813 INFO L226 Difference]: Without dead ends: 2618 [2020-09-25 10:13:03,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-09-25 10:13:03,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2425. [2020-09-25 10:13:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-09-25 10:13:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3059 transitions. [2020-09-25 10:13:03,886 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3059 transitions. Word has length 220 [2020-09-25 10:13:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:03,886 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 3059 transitions. [2020-09-25 10:13:03,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:13:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3059 transitions. [2020-09-25 10:13:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 10:13:03,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:03,893 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, 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] [2020-09-25 10:13:03,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:03,893 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:03,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:03,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2048735431, now seen corresponding path program 1 times [2020-09-25 10:13:03,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:03,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746661620] [2020-09-25 10:13:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:08,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 10:13:08,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:13:08,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:08,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 10:13:08,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:09,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:09,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:13:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:09,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:13:09,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:09,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 10:13:09,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:13:09,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 10:13:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:09,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:09,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 10:13:09,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 10:13:09,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746661620] [2020-09-25 10:13:09,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:09,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:13:09,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044010687] [2020-09-25 10:13:09,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:13:09,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:09,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:13:09,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:13:09,483 INFO L87 Difference]: Start difference. First operand 2425 states and 3059 transitions. Second operand 9 states.