/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=0.2 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:58,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:58,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:58,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:58,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:58,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:58,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:58,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:58,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:58,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:58,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:58,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:58,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:58,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:58,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:58,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:58,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:58,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:58,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:58,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:58,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:58,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:58,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:58,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:58,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:58,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:58,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:58,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:58,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:58,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:58,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:58,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:58,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:58,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:58,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:58,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:58,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:58,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:58,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:58,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:58,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:58,214 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 11:19:58,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:58,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:58,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:58,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:58,243 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:58,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:58,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:58,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:58,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:58,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:58,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:58,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:58,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:58,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:58,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:58,246 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:58,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:58,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:58,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:58,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:58,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:58,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:58,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:58,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:58,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:58,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:58,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:58,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:58,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:58,249 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:19:58,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:58,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:58,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:58,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:58,741 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:58,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 11:19:58,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a42bf95f/75bf18b130c44eb193b98336304260aa/FLAG099ad320c [2020-09-25 11:19:59,452 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:59,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 11:19:59,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a42bf95f/75bf18b130c44eb193b98336304260aa/FLAG099ad320c [2020-09-25 11:19:59,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a42bf95f/75bf18b130c44eb193b98336304260aa [2020-09-25 11:19:59,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:59,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:59,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:59,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:59,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:59,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce0c36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59, skipping insertion in model container [2020-09-25 11:19:59,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:59,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:00,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:00,417 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:00,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:00,541 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:00,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00 WrapperNode [2020-09-25 11:20:00,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:00,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:00,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:00,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:00,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (1/1) ... [2020-09-25 11:20:00,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:00,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:00,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:00,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:00,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (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 11:20:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:02,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:02,183 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:02,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:02 BoogieIcfgContainer [2020-09-25 11:20:02,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:02,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:02,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:02,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:59" (1/3) ... [2020-09-25 11:20:02,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416f151a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:02, skipping insertion in model container [2020-09-25 11:20:02,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:00" (2/3) ... [2020-09-25 11:20:02,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416f151a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:02, skipping insertion in model container [2020-09-25 11:20:02,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:02" (3/3) ... [2020-09-25 11:20:02,203 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 11:20:02,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:02,230 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:02,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:02,294 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:02,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:02,295 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:02,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:02,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:02,296 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:02,296 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:02,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:20:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 11:20:02,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:02,340 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] [2020-09-25 11:20:02,341 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:02,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 11:20:02,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:02,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765155921] [2020-09-25 11:20:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:20:03,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:03,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-09-25 11:20:03,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:20:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:20:03,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:03,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:03,957 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 11:20:03,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765155921] [2020-09-25 11:20:03,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:03,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:20:03,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142446042] [2020-09-25 11:20:03,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:03,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:03,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:03,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:03,992 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 11:20:07,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:07,381 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 11:20:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:20:07,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 11:20:07,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:07,411 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 11:20:07,411 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 11:20:07,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 11:20:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 11:20:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 11:20:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 11:20:07,535 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 11:20:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:07,536 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 11:20:07,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 11:20:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 11:20:07,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:07,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:07,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:07,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:07,547 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 11:20:07,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:07,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479472363] [2020-09-25 11:20:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:10,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 11:20:10,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:10,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-09-25 11:20:10,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:10,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 11:20:10,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:10,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:10,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:10,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:10,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:20:10,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:10,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:10,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:11,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:11,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 11:20:11,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:11,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:11,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:20:11,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:20:11,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479472363] [2020-09-25 11:20:11,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:11,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:20:11,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614360079] [2020-09-25 11:20:11,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:20:11,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:11,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:20:11,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:20:11,144 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 6 states. [2020-09-25 11:20:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:13,454 INFO L93 Difference]: Finished difference Result 2066 states and 2794 transitions. [2020-09-25 11:20:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:20:13,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-25 11:20:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:13,465 INFO L225 Difference]: With dead ends: 2066 [2020-09-25 11:20:13,465 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 11:20:13,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:13,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 11:20:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1193. [2020-09-25 11:20:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-09-25 11:20:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1577 transitions. [2020-09-25 11:20:13,532 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1577 transitions. Word has length 148 [2020-09-25 11:20:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:13,535 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1577 transitions. [2020-09-25 11:20:13,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:20:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1577 transitions. [2020-09-25 11:20:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 11:20:13,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:13,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:13,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:13,555 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:13,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1018487757, now seen corresponding path program 1 times [2020-09-25 11:20:13,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:13,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907442363] [2020-09-25 11:20:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:18,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 11:20:18,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:18,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:20:18,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:18,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:18,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 11:20:18,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:18,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:18,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:18,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:20:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:18,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:19,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 11:20:19,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:19,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 11:20:19,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:19,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:20:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:19,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907442363] [2020-09-25 11:20:19,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:19,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:19,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874555473] [2020-09-25 11:20:19,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:19,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:19,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:19,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:19,222 INFO L87 Difference]: Start difference. First operand 1193 states and 1577 transitions. Second operand 7 states. [2020-09-25 11:20:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:21,740 INFO L93 Difference]: Finished difference Result 3072 states and 4316 transitions. [2020-09-25 11:20:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:21,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-25 11:20:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:21,755 INFO L225 Difference]: With dead ends: 3072 [2020-09-25 11:20:21,755 INFO L226 Difference]: Without dead ends: 2044 [2020-09-25 11:20:21,762 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 11:20:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-09-25 11:20:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1828. [2020-09-25 11:20:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-09-25 11:20:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2313 transitions. [2020-09-25 11:20:21,832 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2313 transitions. Word has length 215 [2020-09-25 11:20:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:21,833 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 2313 transitions. [2020-09-25 11:20:21,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2313 transitions. [2020-09-25 11:20:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 11:20:21,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:21,840 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, 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 11:20:21,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:21,841 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:21,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:21,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2020435647, now seen corresponding path program 1 times [2020-09-25 11:20:21,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:21,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038650863] [2020-09-25 11:20:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 11:20:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:20:26,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:26,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:20:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:27,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:27,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 11:20:27,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:27,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:27,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 11:20:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:27,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 172 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:20:27,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038650863] [2020-09-25 11:20:27,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:27,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:27,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462807736] [2020-09-25 11:20:27,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:27,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:27,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:27,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:27,570 INFO L87 Difference]: Start difference. First operand 1828 states and 2313 transitions. Second operand 10 states. [2020-09-25 11:20:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:31,187 INFO L93 Difference]: Finished difference Result 4245 states and 6097 transitions. [2020-09-25 11:20:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:20:31,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 237 [2020-09-25 11:20:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:31,212 INFO L225 Difference]: With dead ends: 4245 [2020-09-25 11:20:31,213 INFO L226 Difference]: Without dead ends: 2582 [2020-09-25 11:20:31,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:20:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-09-25 11:20:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2352. [2020-09-25 11:20:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2020-09-25 11:20:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 2981 transitions. [2020-09-25 11:20:31,344 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 2981 transitions. Word has length 237 [2020-09-25 11:20:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:31,345 INFO L479 AbstractCegarLoop]: Abstraction has 2352 states and 2981 transitions. [2020-09-25 11:20:31,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:20:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 2981 transitions. [2020-09-25 11:20:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 11:20:31,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:31,351 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, 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] [2020-09-25 11:20:31,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:31,352 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash 878642836, now seen corresponding path program 1 times [2020-09-25 11:20:31,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:31,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133648830] [2020-09-25 11:20:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:36,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 11:20:36,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:20:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:20:36,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:36,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 11:20:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:20:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:36,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:36,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:20:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:36,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:36,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:36,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:36,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 11:20:36,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:36,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:36,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:36,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:37,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 11:20:37,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:37,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:20:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 11:20:37,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133648830] [2020-09-25 11:20:37,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:37,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:37,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686076809] [2020-09-25 11:20:37,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:37,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:37,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:37,194 INFO L87 Difference]: Start difference. First operand 2352 states and 2981 transitions. Second operand 9 states. [2020-09-25 11:20:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:41,037 INFO L93 Difference]: Finished difference Result 5501 states and 7340 transitions. [2020-09-25 11:20:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:20:41,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2020-09-25 11:20:41,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:41,054 INFO L225 Difference]: With dead ends: 5501 [2020-09-25 11:20:41,054 INFO L226 Difference]: Without dead ends: 3294 [2020-09-25 11:20:41,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2020-09-25 11:20:41,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 2959. [2020-09-25 11:20:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2959 states. [2020-09-25 11:20:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 3726 transitions. [2020-09-25 11:20:41,159 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 3726 transitions. Word has length 241 [2020-09-25 11:20:41,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:41,159 INFO L479 AbstractCegarLoop]: Abstraction has 2959 states and 3726 transitions. [2020-09-25 11:20:41,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:20:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 3726 transitions. [2020-09-25 11:20:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 11:20:41,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:41,172 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:41,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:41,172 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:41,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:41,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249918, now seen corresponding path program 1 times [2020-09-25 11:20:41,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:41,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487047791] [2020-09-25 11:20:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-09-25 11:20:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:20:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:20:46,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 11:20:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:46,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:46,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:46,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:20:46,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:46,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:46,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:46,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:46,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 11:20:46,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:46,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:46,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:46,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:20:46,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 11:20:46,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:46,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:20:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 181 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:20:46,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487047791] [2020-09-25 11:20:46,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:46,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:46,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672688742] [2020-09-25 11:20:46,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:46,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:46,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:46,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:46,871 INFO L87 Difference]: Start difference. First operand 2959 states and 3726 transitions. Second operand 10 states.