/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=BIGGEST --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/Problem06_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:15:20,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:15:20,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:15:20,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:15:20,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:15:20,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:15:20,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:15:20,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:15:20,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:15:20,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:15:20,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:15:20,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:15:20,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:15:20,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:15:20,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:15:20,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:15:20,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:15:20,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:15:20,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:15:20,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:15:20,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:15:20,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:15:20,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:15:20,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:15:20,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:15:20,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:15:20,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:15:20,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:15:20,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:15:20,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:15:20,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:15:20,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:15:20,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:15:20,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:15:20,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:15:20,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:15:20,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:15:20,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:15:20,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:15:20,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:15:20,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:15:20,460 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 [2020-10-12 12:15:20,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:15:20,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:15:20,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:15:20,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:15:20,491 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:15:20,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:15:20,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:15:20,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:15:20,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:15:20,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:15:20,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:15:20,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:15:20,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:15:20,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:15:20,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:15:20,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:15:20,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:15:20,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:15:20,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:15:20,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:15:20,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:15:20,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:15:20,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:15:20,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:15:20,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:15:20,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:15:20,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:15:20,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:15:20,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:15:20,496 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 12:15:20,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:15:20,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:15:20,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:15:20,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:15:20,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:15:20,822 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label46.c [2020-10-12 12:15:20,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/583ddb413/a7f99f64644545b6b5b2336e4da8da0a/FLAGd27bc9182 [2020-10-12 12:15:21,834 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:15:21,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label46.c [2020-10-12 12:15:21,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/583ddb413/a7f99f64644545b6b5b2336e4da8da0a/FLAGd27bc9182 [2020-10-12 12:15:22,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/583ddb413/a7f99f64644545b6b5b2336e4da8da0a [2020-10-12 12:15:22,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:15:22,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:15:22,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:15:22,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:15:22,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:15:22,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:15:22" (1/1) ... [2020-10-12 12:15:22,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:22, skipping insertion in model container [2020-10-12 12:15:22,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:15:22" (1/1) ... [2020-10-12 12:15:22,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:15:22,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:15:24,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:15:24,957 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:15:25,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:15:26,004 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:15:26,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26 WrapperNode [2020-10-12 12:15:26,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:15:26,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:15:26,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:15:26,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:15:26,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (1/1) ... [2020-10-12 12:15:26,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (1/1) ... [2020-10-12 12:15:26,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (1/1) ... [2020-10-12 12:15:26,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (1/1) ... [2020-10-12 12:15:26,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (1/1) ... [2020-10-12 12:15:26,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (1/1) ... [2020-10-12 12:15:26,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (1/1) ... [2020-10-12 12:15:26,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:15:26,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:15:26,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:15:26,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:15:26,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (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 [2020-10-12 12:15:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:15:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:15:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:15:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:15:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:15:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:15:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:15:26,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:15:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:15:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:15:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:15:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:15:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:15:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:15:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:15:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:15:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:15:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:15:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:15:33,124 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:15:33,124 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:15:33,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:15:33 BoogieIcfgContainer [2020-10-12 12:15:33,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:15:33,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:15:33,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:15:33,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:15:33,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:15:22" (1/3) ... [2020-10-12 12:15:33,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6b21a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:15:33, skipping insertion in model container [2020-10-12 12:15:33,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:26" (2/3) ... [2020-10-12 12:15:33,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6b21a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:15:33, skipping insertion in model container [2020-10-12 12:15:33,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:15:33" (3/3) ... [2020-10-12 12:15:33,148 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label46.c [2020-10-12 12:15:33,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:15:33,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:15:33,181 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:15:33,209 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:15:33,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:15:33,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:15:33,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:15:33,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:15:33,210 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:15:33,210 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:15:33,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:15:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:15:33,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-12 12:15:33,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:15:33,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:15:33,313 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:15:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:15:33,320 INFO L82 PathProgramCache]: Analyzing trace with hash 283984039, now seen corresponding path program 1 times [2020-10-12 12:15:33,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:15:33,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834998019] [2020-10-12 12:15:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:15:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:36,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:39,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:39,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-12 12:15:39,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:15:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5262 [2020-10-12 12:15:39,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:15:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:15:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:15:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 12:15:45,448 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 12:15:45,595 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-12 12:15:45,767 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-12 12:15:46,115 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2020-10-12 12:15:46,409 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2020-10-12 12:15:46,878 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2020-10-12 12:15:47,146 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-12 12:15:47,400 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-12 12:15:47,643 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-12 12:15:47,896 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-12 12:15:48,158 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-12 12:15:48,380 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-12 12:15:48,637 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-10-12 12:15:48,869 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-10-12 12:15:49,193 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 59 [2020-10-12 12:15:49,366 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:15:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:15:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:49,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:15:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 12:15:49,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:15:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:15:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:15:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:16:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:16:02,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834998019] [2020-10-12 12:16:02,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:16:02,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:16:02,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561744887] [2020-10-12 12:16:02,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:16:02,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:16:02,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:16:02,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:16:02,344 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:16:02,711 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:16:03,275 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2020-10-12 12:16:03,816 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 158 [2020-10-12 12:16:04,387 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 162 [2020-10-12 12:16:07,818 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 162 [2020-10-12 12:16:10,895 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 165 [2020-10-12 12:16:13,175 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 166 [2020-10-12 12:16:13,899 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 172 [2020-10-12 12:16:14,880 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 171 [2020-10-12 12:16:23,548 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 164 [2020-10-12 12:16:24,240 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 169 [2020-10-12 12:16:26,887 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 168 [2020-10-12 12:16:33,478 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 162 [2020-10-12 12:16:34,200 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 166 [2020-10-12 12:16:36,576 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 166 [2020-10-12 12:16:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:16:47,959 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:16:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:16:47,962 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 996 [2020-10-12 12:16:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:16:48,004 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:16:48,004 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:16:48,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:16:48,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:16:48,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:16:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:16:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:16:48,166 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 996 [2020-10-12 12:16:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:16:48,168 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:16:48,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:16:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:16:48,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2020-10-12 12:16:48,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:16:48,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:16:48,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:16:48,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:16:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:16:48,220 INFO L82 PathProgramCache]: Analyzing trace with hash 93974266, now seen corresponding path program 1 times [2020-10-12 12:16:48,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:16:48,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768675716] [2020-10-12 12:16:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:16:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:49,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:53,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:53,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1084 [2020-10-12 12:16:53,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:16:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-12 12:16:53,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:16:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:16:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1003 [2020-10-12 12:16:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:16:54,981 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:16:54,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:16:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:54,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:54,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:54,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:16:54,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:16:54,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 12:16:54,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:16:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:16:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:16:54,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:16:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:16:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:55,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:55,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:16:55,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:16:55,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 12:16:55,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:16:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:16:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:16:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:16:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:16:56,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768675716] [2020-10-12 12:16:56,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:16:56,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:16:56,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458000950] [2020-10-12 12:16:56,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:16:56,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:16:56,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:16:56,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:16:56,428 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 6 states. [2020-10-12 12:16:56,604 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:16:57,008 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:17:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:18,499 INFO L93 Difference]: Finished difference Result 5489 states and 9495 transitions. [2020-10-12 12:17:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:17:18,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1066 [2020-10-12 12:17:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:18,529 INFO L225 Difference]: With dead ends: 5489 [2020-10-12 12:17:18,530 INFO L226 Difference]: Without dead ends: 4230 [2020-10-12 12:17:18,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:17:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2020-10-12 12:17:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4148. [2020-10-12 12:17:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4148 states. [2020-10-12 12:17:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6502 transitions. [2020-10-12 12:17:18,671 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6502 transitions. Word has length 1066 [2020-10-12 12:17:18,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:18,673 INFO L479 AbstractCegarLoop]: Abstraction has 4148 states and 6502 transitions. [2020-10-12 12:17:18,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:17:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6502 transitions. [2020-10-12 12:17:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2020-10-12 12:17:18,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:18,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:17:18,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:17:18,705 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1895515043, now seen corresponding path program 1 times [2020-10-12 12:17:18,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:18,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000400742] [2020-10-12 12:17:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:24,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1103 [2020-10-12 12:17:24,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:17:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-12 12:17:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:17:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:17:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 12:17:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:24,912 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:17:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:17:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:24,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:17:24,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 12:17:24,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:17:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:17:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:25,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:17:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:25,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:25,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:25,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:25,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:17:25,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:17:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-12 12:17:25,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:17:25,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:17:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:25,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:25,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:25,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 12:17:25,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:25,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 12:17:25,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 12:17:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 12:17:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 12:17:26,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000400742] [2020-10-12 12:17:26,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:17:26,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:17:26,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028785672] [2020-10-12 12:17:26,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:17:26,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:26,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:17:26,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:17:26,528 INFO L87 Difference]: Start difference. First operand 4148 states and 6502 transitions. Second operand 7 states. [2020-10-12 12:17:26,668 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:17:27,785 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:17:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:43,371 INFO L93 Difference]: Finished difference Result 10808 states and 17980 transitions. [2020-10-12 12:17:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 12:17:43,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1083 [2020-10-12 12:17:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:43,408 INFO L225 Difference]: With dead ends: 10808 [2020-10-12 12:17:43,409 INFO L226 Difference]: Without dead ends: 7420 [2020-10-12 12:17:43,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 12:17:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2020-10-12 12:17:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 7363. [2020-10-12 12:17:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7363 states. [2020-10-12 12:17:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7363 states to 7363 states and 11287 transitions. [2020-10-12 12:17:43,590 INFO L78 Accepts]: Start accepts. Automaton has 7363 states and 11287 transitions. Word has length 1083 [2020-10-12 12:17:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:43,590 INFO L479 AbstractCegarLoop]: Abstraction has 7363 states and 11287 transitions. [2020-10-12 12:17:43,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:17:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7363 states and 11287 transitions. [2020-10-12 12:17:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2020-10-12 12:17:43,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:43,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:17:43,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:17:43,620 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1056463943, now seen corresponding path program 1 times [2020-10-12 12:17:43,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:43,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203747718] [2020-10-12 12:17:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:43,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:44,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:48,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:48,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1117 [2020-10-12 12:17:48,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:17:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-12 12:17:48,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:17:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:17:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:17:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:49,689 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:17:49,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:17:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:49,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:49,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:49,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:17:49,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 12:17:49,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:17:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:17:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:49,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:17:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:50,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:50,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:17:50,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:50,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 12:17:50,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:17:50,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:17:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:50,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:50,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:50,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:17:50,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:17:50,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:17:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 12:17:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:17:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:50,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 12:17:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:50,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:50,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 12:17:50,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:50,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 12:17:50,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:17:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 12:17:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:17:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 90 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 12:17:51,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203747718] [2020-10-12 12:17:51,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:17:51,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:17:51,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155155764] [2020-10-12 12:17:51,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:17:51,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:17:51,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:17:51,110 INFO L87 Difference]: Start difference. First operand 7363 states and 11287 transitions. Second operand 8 states. [2020-10-12 12:17:51,263 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:17:52,702 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:17:55,014 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 12:18:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:22,223 INFO L93 Difference]: Finished difference Result 27391 states and 45456 transitions. [2020-10-12 12:18:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 12:18:22,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1095 [2020-10-12 12:18:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:22,312 INFO L225 Difference]: With dead ends: 27391 [2020-10-12 12:18:22,312 INFO L226 Difference]: Without dead ends: 20788 [2020-10-12 12:18:22,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 12:18:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20788 states. [2020-10-12 12:18:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20788 to 20480. [2020-10-12 12:18:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20480 states. [2020-10-12 12:18:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20480 states to 20480 states and 30911 transitions. [2020-10-12 12:18:22,935 INFO L78 Accepts]: Start accepts. Automaton has 20480 states and 30911 transitions. Word has length 1095 [2020-10-12 12:18:22,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:22,940 INFO L479 AbstractCegarLoop]: Abstraction has 20480 states and 30911 transitions. [2020-10-12 12:18:22,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:18:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 20480 states and 30911 transitions. [2020-10-12 12:18:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2020-10-12 12:18:23,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:23,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:18:23,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:18:23,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:23,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2135902391, now seen corresponding path program 1 times [2020-10-12 12:18:23,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:23,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111405071] [2020-10-12 12:18:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:23,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:28,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:28,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1158 [2020-10-12 12:18:28,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:18:28,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 12:18:28,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:18:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:18:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 12:18:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:28,693 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:28,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:28,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:28,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:28,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:28,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:18:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:18:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:29,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:29,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:18:29,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-12 12:18:29,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:18:29,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:18:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:29,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:29,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:29,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 12:18:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 150 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 12:18:30,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111405071] [2020-10-12 12:18:30,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:30,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:18:30,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584166606] [2020-10-12 12:18:30,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 12:18:30,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:30,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 12:18:30,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 12:18:30,865 INFO L87 Difference]: Start difference. First operand 20480 states and 30911 transitions. Second operand 9 states. [2020-10-12 12:18:31,018 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:18:32,308 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 12:18:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:49,526 INFO L93 Difference]: Finished difference Result 61863 states and 101908 transitions. [2020-10-12 12:18:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 12:18:49,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1138 [2020-10-12 12:18:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:49,711 INFO L225 Difference]: With dead ends: 61863 [2020-10-12 12:18:49,712 INFO L226 Difference]: Without dead ends: 42143 [2020-10-12 12:18:49,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 12:18:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42143 states. [2020-10-12 12:18:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42143 to 41012. [2020-10-12 12:18:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41012 states. [2020-10-12 12:18:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41012 states to 41012 states and 61861 transitions. [2020-10-12 12:18:51,059 INFO L78 Accepts]: Start accepts. Automaton has 41012 states and 61861 transitions. Word has length 1138 [2020-10-12 12:18:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:51,060 INFO L479 AbstractCegarLoop]: Abstraction has 41012 states and 61861 transitions. [2020-10-12 12:18:51,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 12:18:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 41012 states and 61861 transitions. [2020-10-12 12:18:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2020-10-12 12:18:51,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:51,196 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:18:51,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:18:51,196 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash 317274796, now seen corresponding path program 1 times [2020-10-12 12:18:51,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:51,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498435741] [2020-10-12 12:18:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:55,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:56,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:56,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1172 [2020-10-12 12:18:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:18:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-12 12:18:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 12:18:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:18:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-12 12:18:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:56,860 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:56,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:18:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:18:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:56,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:57,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:57,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:18:57,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:57,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 12:18:57,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:18:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:18:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:57,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:57,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:18:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:18:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 12:18:57,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 12:18:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:18:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 12:18:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:57,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:57,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:57,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:18:57,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 12:18:57,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:18:57,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 161 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 12:18:58,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498435741] [2020-10-12 12:18:58,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:58,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 12:18:58,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697178489] [2020-10-12 12:18:58,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 12:18:58,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:58,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 12:18:58,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-12 12:18:58,563 INFO L87 Difference]: Start difference. First operand 41012 states and 61861 transitions. Second operand 11 states. [2020-10-12 12:18:58,730 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 12:19:00,402 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 12:19:01,408 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 133