/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:31:55,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:31:55,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:31:55,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:31:55,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:31:55,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:31:55,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:31:55,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:31:55,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:31:55,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:31:55,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:31:55,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:31:55,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:31:55,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:31:55,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:31:55,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:31:55,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:31:55,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:31:55,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:31:55,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:31:55,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:31:55,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:31:55,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:31:55,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:31:55,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:31:55,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:31:55,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:31:55,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:31:55,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:31:55,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:31:55,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:31:55,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:31:55,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:31:55,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:31:55,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:31:55,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:31:55,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:31:55,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:31:55,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:31:55,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:31:55,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:31:55,388 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 [2020-10-13 08:31:55,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:31:55,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:31:55,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:31:55,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:31:55,434 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:31:55,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:31:55,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:31:55,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:31:55,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:31:55,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:31:55,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:31:55,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:31:55,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:31:55,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:31:55,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:31:55,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:31:55,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:31:55,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:31:55,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:31:55,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:31:55,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:31:55,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:31:55,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:31:55,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:31:55,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:31:55,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:31:55,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:31:55,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:31:55,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:31:55,441 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:31:55,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:31:55,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:31:55,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:31:55,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:31:55,762 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:31:55,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2020-10-13 08:31:55,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dd247790/5573b6b97cf046a59dd72b524ba56f81/FLAG404e72ab2 [2020-10-13 08:31:56,726 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:31:56,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2020-10-13 08:31:56,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dd247790/5573b6b97cf046a59dd72b524ba56f81/FLAG404e72ab2 [2020-10-13 08:31:57,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dd247790/5573b6b97cf046a59dd72b524ba56f81 [2020-10-13 08:31:57,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:31:57,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:31:57,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:31:57,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:31:57,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:31:57,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:31:57" (1/1) ... [2020-10-13 08:31:57,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2234316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:57, skipping insertion in model container [2020-10-13 08:31:57,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:31:57" (1/1) ... [2020-10-13 08:31:57,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:31:57,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:31:59,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:31:59,330 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:32:00,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:32:00,122 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:32:00,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00 WrapperNode [2020-10-13 08:32:00,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:32:00,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:32:00,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:32:00,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:32:00,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (1/1) ... [2020-10-13 08:32:00,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (1/1) ... [2020-10-13 08:32:00,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (1/1) ... [2020-10-13 08:32:00,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (1/1) ... [2020-10-13 08:32:00,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (1/1) ... [2020-10-13 08:32:00,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (1/1) ... [2020-10-13 08:32:00,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (1/1) ... [2020-10-13 08:32:00,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:32:00,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:32:00,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:32:00,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:32:00,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (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 [2020-10-13 08:32:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:32:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:32:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:32:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:32:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:32:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:32:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:32:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:32:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:32:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:32:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:32:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:32:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:32:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:32:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:32:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:32:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:32:12,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:32:12,365 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:32:12,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:32:12 BoogieIcfgContainer [2020-10-13 08:32:12,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:32:12,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:32:12,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:32:12,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:32:12,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:31:57" (1/3) ... [2020-10-13 08:32:12,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a86b818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:32:12, skipping insertion in model container [2020-10-13 08:32:12,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:00" (2/3) ... [2020-10-13 08:32:12,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a86b818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:32:12, skipping insertion in model container [2020-10-13 08:32:12,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:32:12" (3/3) ... [2020-10-13 08:32:12,392 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label13.c [2020-10-13 08:32:12,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:32:12,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:32:12,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:32:12,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:32:12,463 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:32:12,464 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:32:12,464 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:32:12,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:32:12,464 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:32:12,464 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:32:12,464 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:32:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:32:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 08:32:12,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:12,519 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] [2020-10-13 08:32:12,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:12,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1383037944, now seen corresponding path program 1 times [2020-10-13 08:32:12,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:12,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081837974] [2020-10-13 08:32:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:13,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:13,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:32:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-13 08:32:13,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:32:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:32:13,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:32:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:32:13,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:13,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:13,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:13,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:32:13,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:32:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:13,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081837974] [2020-10-13 08:32:13,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:32:13,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:32:13,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920940350] [2020-10-13 08:32:13,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:32:13,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:13,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:32:13,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:32:13,784 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:32:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:27,922 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2020-10-13 08:32:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:27,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-13 08:32:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:27,962 INFO L225 Difference]: With dead ends: 3204 [2020-10-13 08:32:27,963 INFO L226 Difference]: Without dead ends: 2006 [2020-10-13 08:32:27,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-13 08:32:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2020-10-13 08:32:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-13 08:32:28,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2020-10-13 08:32:28,163 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 63 [2020-10-13 08:32:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:28,165 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2020-10-13 08:32:28,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:32:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2020-10-13 08:32:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:32:28,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:28,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:28,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:32:28,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:28,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:28,174 INFO L82 PathProgramCache]: Analyzing trace with hash 141627569, now seen corresponding path program 1 times [2020-10-13 08:32:28,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:28,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375385406] [2020-10-13 08:32:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:30,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:30,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:32:30,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:32:30,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2053 [2020-10-13 08:32:30,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:32:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:32:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:32:30,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:30,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:30,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:30,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:30,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:32:30,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:30,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:30,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:30,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:30,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:30,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:30,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:32:30,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:32:30,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:32:30,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:32:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:30,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375385406] [2020-10-13 08:32:30,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:30,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:30,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492598494] [2020-10-13 08:32:30,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:30,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:30,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:30,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:30,974 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand 5 states. [2020-10-13 08:32:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:44,712 INFO L93 Difference]: Finished difference Result 3866 states and 6660 transitions. [2020-10-13 08:32:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:44,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-13 08:32:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:44,732 INFO L225 Difference]: With dead ends: 3866 [2020-10-13 08:32:44,733 INFO L226 Difference]: Without dead ends: 1935 [2020-10-13 08:32:44,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:32:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-13 08:32:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1920. [2020-10-13 08:32:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-13 08:32:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3309 transitions. [2020-10-13 08:32:44,806 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3309 transitions. Word has length 132 [2020-10-13 08:32:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:44,809 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3309 transitions. [2020-10-13 08:32:44,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3309 transitions. [2020-10-13 08:32:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 08:32:44,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:44,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:44,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:32:44,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:44,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1689738144, now seen corresponding path program 1 times [2020-10-13 08:32:44,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:44,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660233022] [2020-10-13 08:32:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:46,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 08:32:46,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:32:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1134 [2020-10-13 08:32:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:32:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 08:32:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:46,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:46,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:32:46,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:46,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:46,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:32:46,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:32:46,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:32:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:46,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660233022] [2020-10-13 08:32:46,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:46,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:46,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710592120] [2020-10-13 08:32:46,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:46,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:46,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:46,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:46,366 INFO L87 Difference]: Start difference. First operand 1920 states and 3309 transitions. Second operand 5 states. [2020-10-13 08:33:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:04,095 INFO L93 Difference]: Finished difference Result 5636 states and 9807 transitions. [2020-10-13 08:33:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:04,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-13 08:33:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:04,121 INFO L225 Difference]: With dead ends: 5636 [2020-10-13 08:33:04,121 INFO L226 Difference]: Without dead ends: 3722 [2020-10-13 08:33:04,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2020-10-13 08:33:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3703. [2020-10-13 08:33:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3703 states. [2020-10-13 08:33:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 5849 transitions. [2020-10-13 08:33:04,265 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 5849 transitions. Word has length 133 [2020-10-13 08:33:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:04,268 INFO L479 AbstractCegarLoop]: Abstraction has 3703 states and 5849 transitions. [2020-10-13 08:33:04,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 5849 transitions. [2020-10-13 08:33:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 08:33:04,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:04,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:04,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:33:04,275 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:04,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1800974653, now seen corresponding path program 1 times [2020-10-13 08:33:04,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:04,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957820674] [2020-10-13 08:33:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:06,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:06,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:33:06,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:33:06,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2317 [2020-10-13 08:33:06,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:33:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:33:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:33:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:06,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:06,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:06,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:33:06,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:06,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:07,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:07,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:33:07,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:07,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 08:33:07,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:33:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:07,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957820674] [2020-10-13 08:33:07,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:07,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:33:07,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430961200] [2020-10-13 08:33:07,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:33:07,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:33:07,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:07,300 INFO L87 Difference]: Start difference. First operand 3703 states and 5849 transitions. Second operand 6 states. [2020-10-13 08:33:08,302 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-13 08:33:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:26,611 INFO L93 Difference]: Finished difference Result 7436 states and 11743 transitions. [2020-10-13 08:33:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:33:26,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-13 08:33:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:26,632 INFO L225 Difference]: With dead ends: 7436 [2020-10-13 08:33:26,632 INFO L226 Difference]: Without dead ends: 3707 [2020-10-13 08:33:26,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:33:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2020-10-13 08:33:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3703. [2020-10-13 08:33:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3703 states. [2020-10-13 08:33:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 5845 transitions. [2020-10-13 08:33:26,741 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 5845 transitions. Word has length 138 [2020-10-13 08:33:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:26,742 INFO L479 AbstractCegarLoop]: Abstraction has 3703 states and 5845 transitions. [2020-10-13 08:33:26,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:33:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 5845 transitions. [2020-10-13 08:33:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 08:33:26,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:26,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:26,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:33:26,746 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:26,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:26,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1905388931, now seen corresponding path program 1 times [2020-10-13 08:33:26,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:26,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908481863] [2020-10-13 08:33:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:27,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:27,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:27,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:33:27,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:33:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-13 08:33:27,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 08:33:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 08:33:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:27,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:27,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:27,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:27,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:27,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:33:27,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:27,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:27,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:28,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:28,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:28,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:33:28,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:28,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 08:33:28,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:33:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:28,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908481863] [2020-10-13 08:33:28,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:28,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:33:28,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837618297] [2020-10-13 08:33:28,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:33:28,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:28,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:33:28,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:28,211 INFO L87 Difference]: Start difference. First operand 3703 states and 5845 transitions. Second operand 6 states. [2020-10-13 08:33:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:57,246 INFO L93 Difference]: Finished difference Result 13993 states and 22708 transitions. [2020-10-13 08:33:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:33:57,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-13 08:33:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:57,291 INFO L225 Difference]: With dead ends: 13993 [2020-10-13 08:33:57,292 INFO L226 Difference]: Without dead ends: 10296 [2020-10-13 08:33:57,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:33:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2020-10-13 08:33:57,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 10270. [2020-10-13 08:33:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10270 states. [2020-10-13 08:33:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 15015 transitions. [2020-10-13 08:33:57,589 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 15015 transitions. Word has length 170 [2020-10-13 08:33:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:57,589 INFO L479 AbstractCegarLoop]: Abstraction has 10270 states and 15015 transitions. [2020-10-13 08:33:57,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:33:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 15015 transitions. [2020-10-13 08:33:57,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 08:33:57,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:57,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:57,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:33:57,597 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1271089424, now seen corresponding path program 1 times [2020-10-13 08:33:57,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:57,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841849087] [2020-10-13 08:33:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:58,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:58,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 08:33:58,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:33:58,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-13 08:33:58,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-13 08:33:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 08:33:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:58,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:58,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:33:58,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:58,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:58,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:58,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 08:33:58,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:33:58,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:33:58,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:58,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841849087] [2020-10-13 08:33:58,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:58,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:58,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553041841] [2020-10-13 08:33:58,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:58,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:58,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:58,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:58,915 INFO L87 Difference]: Start difference. First operand 10270 states and 15015 transitions. Second operand 5 states. [2020-10-13 08:34:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:23,763 INFO L93 Difference]: Finished difference Result 30303 states and 45671 transitions. [2020-10-13 08:34:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:23,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 08:34:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:23,840 INFO L225 Difference]: With dead ends: 30303 [2020-10-13 08:34:23,840 INFO L226 Difference]: Without dead ends: 20039 [2020-10-13 08:34:23,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20039 states. [2020-10-13 08:34:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20039 to 20033. [2020-10-13 08:34:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20033 states. [2020-10-13 08:34:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20033 states to 20033 states and 28675 transitions. [2020-10-13 08:34:24,333 INFO L78 Accepts]: Start accepts. Automaton has 20033 states and 28675 transitions. Word has length 175 [2020-10-13 08:34:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:24,334 INFO L479 AbstractCegarLoop]: Abstraction has 20033 states and 28675 transitions. [2020-10-13 08:34:24,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 20033 states and 28675 transitions. [2020-10-13 08:34:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-13 08:34:24,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:24,340 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:34:24,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:34:24,341 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash -488281522, now seen corresponding path program 1 times [2020-10-13 08:34:24,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:24,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714016554] [2020-10-13 08:34:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:25,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:26,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:26,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 08:34:26,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:34:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-13 08:34:26,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-13 08:34:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:34:26,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:26,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:26,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:26,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:26,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:34:26,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:26,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:26,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:26,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:34:26,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 08:34:26,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-13 08:34:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:34:26,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714016554] [2020-10-13 08:34:26,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:26,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:34:26,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160665609] [2020-10-13 08:34:26,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:26,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:26,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:26,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:26,441 INFO L87 Difference]: Start difference. First operand 20033 states and 28675 transitions. Second operand 5 states. [2020-10-13 08:34:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:47,654 INFO L93 Difference]: Finished difference Result 54651 states and 80562 transitions. [2020-10-13 08:34:47,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:47,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-13 08:34:47,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:47,790 INFO L225 Difference]: With dead ends: 54651 [2020-10-13 08:34:47,790 INFO L226 Difference]: Without dead ends: 34624 [2020-10-13 08:34:47,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34624 states. [2020-10-13 08:34:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34624 to 34618. [2020-10-13 08:34:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34618 states. [2020-10-13 08:34:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34618 states to 34618 states and 46437 transitions. [2020-10-13 08:34:48,499 INFO L78 Accepts]: Start accepts. Automaton has 34618 states and 46437 transitions. Word has length 199 [2020-10-13 08:34:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:48,499 INFO L479 AbstractCegarLoop]: Abstraction has 34618 states and 46437 transitions. [2020-10-13 08:34:48,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 34618 states and 46437 transitions. [2020-10-13 08:34:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 08:34:48,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:48,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:34:48,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:34:48,507 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:48,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:48,508 INFO L82 PathProgramCache]: Analyzing trace with hash 113230554, now seen corresponding path program 1 times [2020-10-13 08:34:48,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:48,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365023289] [2020-10-13 08:34:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:53,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:53,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 08:34:53,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:34:53,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 08:34:53,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:53,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:34:53,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:34:53,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:34:53,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:53,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:53,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:53,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:53,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:34:53,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:53,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:53,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:34:53,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:34:53,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 08:34:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:53,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:53,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:34:53,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:53,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:34:53,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:34:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:34:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:34:54,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365023289] [2020-10-13 08:34:54,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:54,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:34:54,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269996188] [2020-10-13 08:34:54,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:34:54,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:54,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:34:54,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:54,107 INFO L87 Difference]: Start difference. First operand 34618 states and 46437 transitions. Second operand 6 states. [2020-10-13 08:35:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:23,325 INFO L93 Difference]: Finished difference Result 76524 states and 102126 transitions. [2020-10-13 08:35:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:35:23,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2020-10-13 08:35:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:23,483 INFO L225 Difference]: With dead ends: 76524 [2020-10-13 08:35:23,483 INFO L226 Difference]: Without dead ends: 41882 [2020-10-13 08:35:23,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:35:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41882 states. [2020-10-13 08:35:24,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41882 to 35453. [2020-10-13 08:35:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35453 states. [2020-10-13 08:35:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35453 states to 35453 states and 47575 transitions. [2020-10-13 08:35:24,330 INFO L78 Accepts]: Start accepts. Automaton has 35453 states and 47575 transitions. Word has length 216 [2020-10-13 08:35:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:24,331 INFO L479 AbstractCegarLoop]: Abstraction has 35453 states and 47575 transitions. [2020-10-13 08:35:24,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:35:24,331 INFO L276 IsEmpty]: Start isEmpty. Operand 35453 states and 47575 transitions. [2020-10-13 08:35:24,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 08:35:24,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:24,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:35:24,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:35:24,344 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:24,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:24,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1149527788, now seen corresponding path program 1 times [2020-10-13 08:35:24,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:24,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320065798] [2020-10-13 08:35:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:24,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:26,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:26,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-13 08:35:26,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:35:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-13 08:35:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-13 08:35:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 08:35:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:26,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:26,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:26,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:26,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:35:26,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:26,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:26,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:26,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 08:35:26,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:26,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 08:35:26,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:26,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 08:35:26,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:26,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320065798] [2020-10-13 08:35:26,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:26,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:26,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650616980] [2020-10-13 08:35:26,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:26,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:26,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:26,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:26,621 INFO L87 Difference]: Start difference. First operand 35453 states and 47575 transitions. Second operand 5 states.