/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:25:06,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:25:06,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:25:06,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:25:06,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:25:06,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:25:06,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:25:06,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:25:06,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:25:06,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:25:06,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:25:06,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:25:06,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:25:06,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:25:06,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:25:06,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:25:06,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:25:06,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:25:06,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:25:06,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:25:06,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:25:06,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:25:06,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:25:06,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:25:06,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:25:06,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:25:06,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:25:06,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:25:06,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:25:06,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:25:06,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:25:06,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:25:06,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:25:06,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:25:06,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:25:06,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:25:06,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:25:06,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:25:06,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:25:06,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:25:06,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:25:06,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:25:06,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:25:06,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:25:06,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:25:06,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:25:06,386 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:25:06,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:25:06,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:25:06,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:25:06,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:25:06,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:25:06,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:25:06,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:25:06,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:25:06,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:25:06,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:25:06,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:25:06,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:25:06,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:25:06,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:25:06,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:25:06,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:25:06,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:25:06,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:25:06,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:25:06,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:25:06,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:25:06,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:25:06,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:25:06,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:25:06,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:25:06,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:25:06,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:25:06,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:25:06,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:25:06,895 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:25:06,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-24 19:25:06,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d0eb1f59/e5d7d3bbc8ed4bb2a886abd27e79e628/FLAG8a830b023 [2020-09-24 19:25:07,645 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:25:07,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-24 19:25:07,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d0eb1f59/e5d7d3bbc8ed4bb2a886abd27e79e628/FLAG8a830b023 [2020-09-24 19:25:07,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d0eb1f59/e5d7d3bbc8ed4bb2a886abd27e79e628 [2020-09-24 19:25:07,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:25:07,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:25:07,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:07,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:25:07,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:25:07,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:07" (1/1) ... [2020-09-24 19:25:07,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:07, skipping insertion in model container [2020-09-24 19:25:07,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:07" (1/1) ... [2020-09-24 19:25:07,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:25:07,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:25:08,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:08,415 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:25:08,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:08,671 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:25:08,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08 WrapperNode [2020-09-24 19:25:08,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:08,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:25:08,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:25:08,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:25:08,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (1/1) ... [2020-09-24 19:25:08,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (1/1) ... [2020-09-24 19:25:08,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (1/1) ... [2020-09-24 19:25:08,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (1/1) ... [2020-09-24 19:25:08,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (1/1) ... [2020-09-24 19:25:08,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (1/1) ... [2020-09-24 19:25:08,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (1/1) ... [2020-09-24 19:25:08,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:25:08,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:25:08,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:25:08,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:25:08,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:25:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:25:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:25:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:25:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:25:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:25:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:25:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:25:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:25:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:25:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:25:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:25:10,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:25:10,399 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:25:10,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:10 BoogieIcfgContainer [2020-09-24 19:25:10,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:25:10,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:25:10,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:25:10,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:25:10,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:25:07" (1/3) ... [2020-09-24 19:25:10,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:10, skipping insertion in model container [2020-09-24 19:25:10,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:08" (2/3) ... [2020-09-24 19:25:10,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:10, skipping insertion in model container [2020-09-24 19:25:10,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:10" (3/3) ... [2020-09-24 19:25:10,431 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-24 19:25:10,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:25:10,455 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:25:10,479 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:25:10,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:25:10,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:25:10,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:25:10,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:25:10,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:25:10,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:25:10,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:25:10,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:25:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:25:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 19:25:10,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:10,571 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] [2020-09-24 19:25:10,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:10,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-24 19:25:10,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:10,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766651903] [2020-09-24 19:25:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:11,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:11,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:11,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:11,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 19:25:11,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:11,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:25:11,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:25:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:25:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:25:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:12,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:25:12,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:25:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:12,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766651903] [2020-09-24 19:25:12,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:12,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:25:12,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078042912] [2020-09-24 19:25:12,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:25:12,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:12,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:25:12,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:25:12,375 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:25:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:14,681 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-24 19:25:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:25:14,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-24 19:25:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:14,716 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 19:25:14,716 INFO L226 Difference]: Without dead ends: 638 [2020-09-24 19:25:14,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-24 19:25:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-24 19:25:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:25:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 19:25:14,837 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 144 [2020-09-24 19:25:14,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:14,838 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 19:25:14,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:25:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 19:25:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 19:25:14,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:14,846 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:25:14,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:25:14,847 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:14,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:14,847 INFO L82 PathProgramCache]: Analyzing trace with hash -838420896, now seen corresponding path program 1 times [2020-09-24 19:25:14,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:14,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78157408] [2020-09-24 19:25:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:15,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 19:25:15,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-24 19:25:15,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:25:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:25:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:16,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:25:16,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:25:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:16,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:16,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:16,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:25:16,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:16,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78157408] [2020-09-24 19:25:16,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:16,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:25:16,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509223589] [2020-09-24 19:25:16,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:16,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:16,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:16,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:16,223 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-24 19:25:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:18,152 INFO L93 Difference]: Finished difference Result 1589 states and 1985 transitions. [2020-09-24 19:25:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:18,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-24 19:25:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:18,161 INFO L225 Difference]: With dead ends: 1589 [2020-09-24 19:25:18,162 INFO L226 Difference]: Without dead ends: 1010 [2020-09-24 19:25:18,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-09-24 19:25:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 893. [2020-09-24 19:25:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-09-24 19:25:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1122 transitions. [2020-09-24 19:25:18,218 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1122 transitions. Word has length 165 [2020-09-24 19:25:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:18,219 INFO L479 AbstractCegarLoop]: Abstraction has 893 states and 1122 transitions. [2020-09-24 19:25:18,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1122 transitions. [2020-09-24 19:25:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 19:25:18,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:18,225 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:25:18,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:25:18,226 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:18,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash -770413602, now seen corresponding path program 1 times [2020-09-24 19:25:18,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:18,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263004097] [2020-09-24 19:25:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 19:25:19,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:19,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 19:25:19,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:25:19,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:19,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:25:19,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:19,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:19,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:19,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:25:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:19,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263004097] [2020-09-24 19:25:19,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:19,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:19,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185917220] [2020-09-24 19:25:19,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:19,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:19,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:19,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:19,759 INFO L87 Difference]: Start difference. First operand 893 states and 1122 transitions. Second operand 5 states. [2020-09-24 19:25:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:21,647 INFO L93 Difference]: Finished difference Result 2249 states and 2912 transitions. [2020-09-24 19:25:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:21,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-24 19:25:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:21,656 INFO L225 Difference]: With dead ends: 2249 [2020-09-24 19:25:21,657 INFO L226 Difference]: Without dead ends: 1380 [2020-09-24 19:25:21,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:21,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-09-24 19:25:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1038. [2020-09-24 19:25:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-24 19:25:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1277 transitions. [2020-09-24 19:25:21,726 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1277 transitions. Word has length 165 [2020-09-24 19:25:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:21,726 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1277 transitions. [2020-09-24 19:25:21,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1277 transitions. [2020-09-24 19:25:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 19:25:21,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:21,733 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:21,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:25:21,734 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:21,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:21,734 INFO L82 PathProgramCache]: Analyzing trace with hash -947642982, now seen corresponding path program 1 times [2020-09-24 19:25:21,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:21,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979621070] [2020-09-24 19:25:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:21,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:22,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-24 19:25:22,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-09-24 19:25:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:25:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:22,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:22,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:22,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:22,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:22,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:23,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:25:23,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:23,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:23,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 19:25:23,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:23,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979621070] [2020-09-24 19:25:23,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:23,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:23,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462535971] [2020-09-24 19:25:23,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:23,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:23,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:23,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:23,323 INFO L87 Difference]: Start difference. First operand 1038 states and 1277 transitions. Second operand 7 states. [2020-09-24 19:25:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:25,644 INFO L93 Difference]: Finished difference Result 2383 states and 3005 transitions. [2020-09-24 19:25:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:25:25,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-24 19:25:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:25,657 INFO L225 Difference]: With dead ends: 2383 [2020-09-24 19:25:25,657 INFO L226 Difference]: Without dead ends: 1369 [2020-09-24 19:25:25,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2020-09-24 19:25:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1189. [2020-09-24 19:25:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-09-24 19:25:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1482 transitions. [2020-09-24 19:25:25,748 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1482 transitions. Word has length 206 [2020-09-24 19:25:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:25,748 INFO L479 AbstractCegarLoop]: Abstraction has 1189 states and 1482 transitions. [2020-09-24 19:25:25,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1482 transitions. [2020-09-24 19:25:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 19:25:25,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:25,756 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:25,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:25:25,756 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:25,757 INFO L82 PathProgramCache]: Analyzing trace with hash -192373063, now seen corresponding path program 1 times [2020-09-24 19:25:25,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:25,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237496489] [2020-09-24 19:25:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-24 19:25:26,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-24 19:25:26,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 19:25:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 19:25:26,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:26,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:26,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:26,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:26,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:26,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:27,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:27,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:25:27,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:25:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:27,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:27,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 19:25:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:27,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237496489] [2020-09-24 19:25:27,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:27,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:27,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81782882] [2020-09-24 19:25:27,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:27,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:27,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:27,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:27,550 INFO L87 Difference]: Start difference. First operand 1189 states and 1482 transitions. Second operand 8 states. [2020-09-24 19:25:27,790 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-09-24 19:25:28,344 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 19:25:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:30,764 INFO L93 Difference]: Finished difference Result 3198 states and 4094 transitions. [2020-09-24 19:25:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:25:30,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-24 19:25:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:30,782 INFO L225 Difference]: With dead ends: 3198 [2020-09-24 19:25:30,783 INFO L226 Difference]: Without dead ends: 2033 [2020-09-24 19:25:30,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:25:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2020-09-24 19:25:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1945. [2020-09-24 19:25:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2020-09-24 19:25:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2418 transitions. [2020-09-24 19:25:30,873 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2418 transitions. Word has length 213 [2020-09-24 19:25:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:30,874 INFO L479 AbstractCegarLoop]: Abstraction has 1945 states and 2418 transitions. [2020-09-24 19:25:30,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2418 transitions. [2020-09-24 19:25:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 19:25:30,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:30,888 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:30,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:25:30,888 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:30,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:30,889 INFO L82 PathProgramCache]: Analyzing trace with hash 655222966, now seen corresponding path program 1 times [2020-09-24 19:25:30,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:30,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309115737] [2020-09-24 19:25:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-24 19:25:32,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:32,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:25:32,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-24 19:25:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 19:25:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:32,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:32,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:32,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:32,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:32,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:25:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:25:32,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 19:25:32,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 19:25:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 19:25:32,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309115737] [2020-09-24 19:25:32,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:32,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:32,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100679901] [2020-09-24 19:25:32,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:32,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:32,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:32,385 INFO L87 Difference]: Start difference. First operand 1945 states and 2418 transitions. Second operand 5 states. [2020-09-24 19:25:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:34,278 INFO L93 Difference]: Finished difference Result 3241 states and 4083 transitions. [2020-09-24 19:25:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:34,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-09-24 19:25:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:34,295 INFO L225 Difference]: With dead ends: 3241 [2020-09-24 19:25:34,295 INFO L226 Difference]: Without dead ends: 3239 [2020-09-24 19:25:34,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2020-09-24 19:25:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 3017. [2020-09-24 19:25:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3017 states. [2020-09-24 19:25:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 3790 transitions. [2020-09-24 19:25:34,385 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 3790 transitions. Word has length 228 [2020-09-24 19:25:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:34,386 INFO L479 AbstractCegarLoop]: Abstraction has 3017 states and 3790 transitions. [2020-09-24 19:25:34,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 3790 transitions. [2020-09-24 19:25:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 19:25:34,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:34,400 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:34,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:25:34,400 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:34,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1435135550, now seen corresponding path program 1 times [2020-09-24 19:25:34,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:34,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500991051] [2020-09-24 19:25:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:34,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:35,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-24 19:25:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:25:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:25:35,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-24 19:25:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:25:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:35,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:35,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:35,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:35,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:35,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:35,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:35,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:35,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:35,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:35,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:25:35,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:25:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 19:25:35,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500991051] [2020-09-24 19:25:35,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:35,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:25:35,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356724402] [2020-09-24 19:25:35,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:25:35,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:35,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:25:35,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:35,907 INFO L87 Difference]: Start difference. First operand 3017 states and 3790 transitions. Second operand 6 states. [2020-09-24 19:25:38,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:38,484 INFO L93 Difference]: Finished difference Result 7318 states and 9275 transitions. [2020-09-24 19:25:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:25:38,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2020-09-24 19:25:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:38,503 INFO L225 Difference]: With dead ends: 7318 [2020-09-24 19:25:38,504 INFO L226 Difference]: Without dead ends: 4325 [2020-09-24 19:25:38,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2020-09-24 19:25:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 3023. [2020-09-24 19:25:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3023 states. [2020-09-24 19:25:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 3730 transitions. [2020-09-24 19:25:38,666 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 3730 transitions. Word has length 230 [2020-09-24 19:25:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:38,667 INFO L479 AbstractCegarLoop]: Abstraction has 3023 states and 3730 transitions. [2020-09-24 19:25:38,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:25:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 3730 transitions. [2020-09-24 19:25:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 19:25:38,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:38,681 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, 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] [2020-09-24 19:25:38,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:25:38,681 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:38,682 INFO L82 PathProgramCache]: Analyzing trace with hash 582092877, now seen corresponding path program 1 times [2020-09-24 19:25:38,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:38,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744584881] [2020-09-24 19:25:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:38,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:39,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-24 19:25:39,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:25:39,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-24 19:25:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 19:25:39,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:39,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:39,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:39,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:40,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:25:40,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:40,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 19:25:40,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:25:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:40,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744584881] [2020-09-24 19:25:40,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:40,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:40,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833809158] [2020-09-24 19:25:40,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:40,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:40,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:40,129 INFO L87 Difference]: Start difference. First operand 3023 states and 3730 transitions. Second operand 5 states. [2020-09-24 19:25:42,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:42,156 INFO L93 Difference]: Finished difference Result 7364 states and 9223 transitions. [2020-09-24 19:25:42,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:42,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-09-24 19:25:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:42,175 INFO L225 Difference]: With dead ends: 7364 [2020-09-24 19:25:42,175 INFO L226 Difference]: Without dead ends: 4365 [2020-09-24 19:25:42,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:42,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4365 states. [2020-09-24 19:25:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 4169. [2020-09-24 19:25:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4169 states. [2020-09-24 19:25:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 5107 transitions. [2020-09-24 19:25:42,292 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 5107 transitions. Word has length 230 [2020-09-24 19:25:42,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:42,293 INFO L479 AbstractCegarLoop]: Abstraction has 4169 states and 5107 transitions. [2020-09-24 19:25:42,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 5107 transitions. [2020-09-24 19:25:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-09-24 19:25:42,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:42,320 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:42,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:25:42,320 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:42,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1876998313, now seen corresponding path program 1 times [2020-09-24 19:25:42,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:42,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931808164] [2020-09-24 19:25:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-09-24 19:25:43,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:25:43,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:43,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:43,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:25:43,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:43,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 19:25:43,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:25:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:25:43,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:25:43,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:25:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:25:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:25:43,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:25:43,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 19:25:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:43,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 19:25:43,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931808164] [2020-09-24 19:25:43,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:43,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:43,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991350639] [2020-09-24 19:25:43,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:43,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:43,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:43,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:43,976 INFO L87 Difference]: Start difference. First operand 4169 states and 5107 transitions. Second operand 7 states. [2020-09-24 19:25:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:46,741 INFO L93 Difference]: Finished difference Result 8922 states and 10952 transitions. [2020-09-24 19:25:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:25:46,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 288 [2020-09-24 19:25:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:46,761 INFO L225 Difference]: With dead ends: 8922 [2020-09-24 19:25:46,761 INFO L226 Difference]: Without dead ends: 4712 [2020-09-24 19:25:46,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:25:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2020-09-24 19:25:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 4410. [2020-09-24 19:25:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4410 states. [2020-09-24 19:25:46,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 5259 transitions. [2020-09-24 19:25:46,885 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 5259 transitions. Word has length 288 [2020-09-24 19:25:46,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:46,886 INFO L479 AbstractCegarLoop]: Abstraction has 4410 states and 5259 transitions. [2020-09-24 19:25:46,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 5259 transitions. [2020-09-24 19:25:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-09-24 19:25:46,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:46,905 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:46,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:25:46,905 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1023260744, now seen corresponding path program 1 times [2020-09-24 19:25:46,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:46,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612890744] [2020-09-24 19:25:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-09-24 19:25:48,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-09-24 19:25:48,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-24 19:25:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 19:25:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:48,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:48,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:48,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:25:48,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:25:48,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:25:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:48,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:25:48,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:48,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 19:25:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:48,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:48,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:25:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:25:48,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:25:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:25:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:48,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 19:25:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:25:48,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 19:25:48,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:25:48,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-09-24 19:25:48,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612890744] [2020-09-24 19:25:48,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:48,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:48,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598489024] [2020-09-24 19:25:48,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:48,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:48,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:48,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:48,853 INFO L87 Difference]: Start difference. First operand 4410 states and 5259 transitions. Second operand 8 states. [2020-09-24 19:25:52,108 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-24 19:25:52,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:52,440 INFO L93 Difference]: Finished difference Result 9644 states and 11527 transitions. [2020-09-24 19:25:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:52,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2020-09-24 19:25:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:52,463 INFO L225 Difference]: With dead ends: 9644 [2020-09-24 19:25:52,463 INFO L226 Difference]: Without dead ends: 5399 [2020-09-24 19:25:52,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2020-09-24 19:25:52,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 4919. [2020-09-24 19:25:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4919 states. [2020-09-24 19:25:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4919 states to 4919 states and 5835 transitions. [2020-09-24 19:25:52,614 INFO L78 Accepts]: Start accepts. Automaton has 4919 states and 5835 transitions. Word has length 313 [2020-09-24 19:25:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:52,615 INFO L479 AbstractCegarLoop]: Abstraction has 4919 states and 5835 transitions. [2020-09-24 19:25:52,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4919 states and 5835 transitions. [2020-09-24 19:25:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-24 19:25:52,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:52,635 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:52,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:25:52,635 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2016301515, now seen corresponding path program 1 times [2020-09-24 19:25:52,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:52,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291204410] [2020-09-24 19:25:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:53,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-09-24 19:25:53,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:53,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 19:25:53,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:25:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:25:53,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:53,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:25:53,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:53,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:53,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:25:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:25:53,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:25:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:25:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:53,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:53,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:53,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 19:25:53,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:25:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 19:25:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:54,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:54,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:54,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:25:54,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:25:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:25:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:54,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 19:25:54,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 19:25:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-24 19:25:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:25:54,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:25:54,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 19:25:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 182 proven. 46 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-09-24 19:25:54,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291204410] [2020-09-24 19:25:54,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:54,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:54,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426167087] [2020-09-24 19:25:54,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:54,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:54,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:54,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:54,416 INFO L87 Difference]: Start difference. First operand 4919 states and 5835 transitions. Second operand 8 states. [2020-09-24 19:25:55,381 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 19:25:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:57,301 INFO L93 Difference]: Finished difference Result 10352 states and 12281 transitions. [2020-09-24 19:25:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:25:57,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-09-24 19:25:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:57,331 INFO L225 Difference]: With dead ends: 10352 [2020-09-24 19:25:57,331 INFO L226 Difference]: Without dead ends: 5451 [2020-09-24 19:25:57,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:25:57,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2020-09-24 19:25:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 5089. [2020-09-24 19:25:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5089 states. [2020-09-24 19:25:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 5975 transitions. [2020-09-24 19:25:57,445 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 5975 transitions. Word has length 333 [2020-09-24 19:25:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:57,446 INFO L479 AbstractCegarLoop]: Abstraction has 5089 states and 5975 transitions. [2020-09-24 19:25:57,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 5975 transitions. [2020-09-24 19:25:57,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-24 19:25:57,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:57,466 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-09-24 19:25:57,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:25:57,467 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:57,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:57,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1464772898, now seen corresponding path program 1 times [2020-09-24 19:25:57,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:57,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326647792] [2020-09-24 19:25:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:57,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:58,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-09-24 19:25:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:25:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 19:25:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:25:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:58,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:58,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:58,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:58,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:58,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking...