/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=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/Problem10_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:25:02,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:25:02,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:25:02,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:25:02,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:25:02,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:25:02,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:25:02,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:25:02,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:25:02,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:25:02,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:25:02,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:25:02,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:25:02,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:25:02,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:25:02,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:25:02,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:25:02,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:25:02,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:25:02,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:25:02,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:25:02,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:25:02,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:25:02,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:25:02,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:25:02,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:25:02,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:25:02,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:25:02,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:25:02,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:25:02,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:25:02,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:25:02,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:25:02,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:25:02,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:25:02,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:25:02,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:25:02,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:25:02,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:25:02,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:25:02,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:25:02,877 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 18:25:02,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:25:02,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:25:02,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:25:02,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:25:02,928 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:25:02,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:25:02,929 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:25:02,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:25:02,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:25:02,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:25:02,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:25:02,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:25:02,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:25:02,931 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:25:02,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:25:02,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:25:02,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:25:02,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:25:02,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:25:02,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:25:02,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:25:02,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:02,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:25:02,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:25:02,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:25:02,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:25:02,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:25:02,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:25:02,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:25:02,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:25:03,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:25:03,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:25:03,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:25:03,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:25:03,449 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:25:03,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-24 18:25:03,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47cf41872/a6b7cd76d2c947db8d2511b61d3a5663/FLAG05098533a [2020-09-24 18:25:04,115 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:25:04,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-24 18:25:04,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47cf41872/a6b7cd76d2c947db8d2511b61d3a5663/FLAG05098533a [2020-09-24 18:25:04,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47cf41872/a6b7cd76d2c947db8d2511b61d3a5663 [2020-09-24 18:25:04,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:25:04,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:25:04,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:04,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:25:04,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:25:04,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:04" (1/1) ... [2020-09-24 18:25:04,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18215cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:04, skipping insertion in model container [2020-09-24 18:25:04,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:04" (1/1) ... [2020-09-24 18:25:04,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:25:04,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:25:05,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:05,053 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:25:05,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:05,352 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:25:05,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05 WrapperNode [2020-09-24 18:25:05,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:05,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:25:05,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:25:05,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:25:05,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (1/1) ... [2020-09-24 18:25:05,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (1/1) ... [2020-09-24 18:25:05,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (1/1) ... [2020-09-24 18:25:05,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (1/1) ... [2020-09-24 18:25:05,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (1/1) ... [2020-09-24 18:25:05,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (1/1) ... [2020-09-24 18:25:05,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (1/1) ... [2020-09-24 18:25:05,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:25:05,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:25:05,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:25:05,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:25:05,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (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 18:25:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:25:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:25:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:25:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:25:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:25:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:25:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:25:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:25:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:25:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:25:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:07,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:07,243 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:07,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:07 BoogieIcfgContainer [2020-09-24 18:25:07,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:07,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:07,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:07,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:07,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:04" (1/3) ... [2020-09-24 18:25:07,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb2a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:07, skipping insertion in model container [2020-09-24 18:25:07,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:05" (2/3) ... [2020-09-24 18:25:07,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb2a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:07, skipping insertion in model container [2020-09-24 18:25:07,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:07" (3/3) ... [2020-09-24 18:25:07,263 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label34.c [2020-09-24 18:25:07,275 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:07,292 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:07,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:07,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:07,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:07,347 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:07,347 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:07,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:07,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:07,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:07,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:25:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 18:25:07,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:07,395 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] [2020-09-24 18:25:07,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:07,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1489035705, now seen corresponding path program 1 times [2020-09-24 18:25:07,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:07,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631807811] [2020-09-24 18:25:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:08,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 18:25:08,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:08,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1271 [2020-09-24 18:25:08,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:25:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 18:25:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:25:09,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:09,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:09,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:09,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:09,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:25:09,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:25:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:09,122 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 18:25:09,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631807811] [2020-09-24 18:25:09,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:09,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:25:09,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355304737] [2020-09-24 18:25:09,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:25:09,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:09,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:25:09,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:25:09,161 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:25:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:11,517 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 18:25:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:25:11,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-24 18:25:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:11,546 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 18:25:11,547 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 18:25:11,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 18:25:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 18:25:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 18:25:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 18:25:11,669 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 82 [2020-09-24 18:25:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:11,670 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 18:25:11,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:25:11,670 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 18:25:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 18:25:11,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:11,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:11,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:25:11,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:11,683 INFO L82 PathProgramCache]: Analyzing trace with hash -942957376, now seen corresponding path program 1 times [2020-09-24 18:25:11,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:11,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971277480] [2020-09-24 18:25:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:16,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 18:25:16,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:25:16,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:25:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:25:16,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:16,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:16,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:16,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:25:16,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:25:16,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:17,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:17,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-24 18:25:17,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:25:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 18:25:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:17,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971277480] [2020-09-24 18:25:17,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:17,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:25:17,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028902981] [2020-09-24 18:25:17,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:17,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:17,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:17,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:17,256 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-24 18:25:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:19,274 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-24 18:25:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:25:19,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-24 18:25:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:19,280 INFO L225 Difference]: With dead ends: 1330 [2020-09-24 18:25:19,280 INFO L226 Difference]: Without dead ends: 769 [2020-09-24 18:25:19,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:25:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-24 18:25:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-24 18:25:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-24 18:25:19,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-24 18:25:19,337 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 165 [2020-09-24 18:25:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:19,340 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-24 18:25:19,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:25:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-24 18:25:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 18:25:19,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:19,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:19,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:25:19,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:19,354 INFO L82 PathProgramCache]: Analyzing trace with hash 782475013, now seen corresponding path program 1 times [2020-09-24 18:25:19,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:19,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409371306] [2020-09-24 18:25:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 18:25:22,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2621 [2020-09-24 18:25:22,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 18:25:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:25:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:22,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:22,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:25:22,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:22,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:22,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:22,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:22,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 18:25:22,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:25:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:22,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409371306] [2020-09-24 18:25:22,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:22,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:22,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146360980] [2020-09-24 18:25:22,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:22,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:22,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:22,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:22,279 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 5 states. [2020-09-24 18:25:23,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:23,892 INFO L93 Difference]: Finished difference Result 1758 states and 2266 transitions. [2020-09-24 18:25:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:23,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-24 18:25:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:23,907 INFO L225 Difference]: With dead ends: 1758 [2020-09-24 18:25:23,907 INFO L226 Difference]: Without dead ends: 1042 [2020-09-24 18:25:23,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-24 18:25:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2020-09-24 18:25:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-24 18:25:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1312 transitions. [2020-09-24 18:25:23,959 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1312 transitions. Word has length 165 [2020-09-24 18:25:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:23,961 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1312 transitions. [2020-09-24 18:25:23,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1312 transitions. [2020-09-24 18:25:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 18:25:23,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:23,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:23,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:23,972 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1039213483, now seen corresponding path program 1 times [2020-09-24 18:25:23,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:23,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784783583] [2020-09-24 18:25:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 18:25:29,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:29,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:25:29,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 18:25:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 18:25:29,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:29,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:29,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:25:29,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:29,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:25:29,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 18:25:29,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 18:25:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:29,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784783583] [2020-09-24 18:25:29,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:29,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:29,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884684466] [2020-09-24 18:25:29,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:29,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:29,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:29,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:29,350 INFO L87 Difference]: Start difference. First operand 1040 states and 1312 transitions. Second operand 5 states. [2020-09-24 18:25:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:31,564 INFO L93 Difference]: Finished difference Result 2553 states and 3379 transitions. [2020-09-24 18:25:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:31,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-24 18:25:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:31,581 INFO L225 Difference]: With dead ends: 2553 [2020-09-24 18:25:31,582 INFO L226 Difference]: Without dead ends: 1678 [2020-09-24 18:25:31,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-24 18:25:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1656. [2020-09-24 18:25:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-09-24 18:25:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2065 transitions. [2020-09-24 18:25:31,652 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2065 transitions. Word has length 171 [2020-09-24 18:25:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:31,653 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 2065 transitions. [2020-09-24 18:25:31,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2065 transitions. [2020-09-24 18:25:31,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 18:25:31,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:31,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:31,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:25:31,659 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1276415705, now seen corresponding path program 1 times [2020-09-24 18:25:31,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:31,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492672431] [2020-09-24 18:25:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:31,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:34,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:35,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 18:25:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 18:25:36,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 18:25:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 18:25:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:36,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:36,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:36,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:36,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:36,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:36,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:36,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:25:36,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:36,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 18:25:36,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 18:25:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:36,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492672431] [2020-09-24 18:25:36,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:36,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:36,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131159883] [2020-09-24 18:25:36,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:36,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:36,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:36,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:36,991 INFO L87 Difference]: Start difference. First operand 1656 states and 2065 transitions. Second operand 5 states. [2020-09-24 18:25:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:38,881 INFO L93 Difference]: Finished difference Result 3773 states and 4877 transitions. [2020-09-24 18:25:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:38,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-24 18:25:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:38,900 INFO L225 Difference]: With dead ends: 3773 [2020-09-24 18:25:38,900 INFO L226 Difference]: Without dead ends: 2282 [2020-09-24 18:25:38,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-09-24 18:25:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1820. [2020-09-24 18:25:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2020-09-24 18:25:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2265 transitions. [2020-09-24 18:25:38,985 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2265 transitions. Word has length 190 [2020-09-24 18:25:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:38,986 INFO L479 AbstractCegarLoop]: Abstraction has 1820 states and 2265 transitions. [2020-09-24 18:25:38,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2265 transitions. [2020-09-24 18:25:38,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 18:25:38,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:38,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:38,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:25:38,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:38,994 INFO L82 PathProgramCache]: Analyzing trace with hash -451059465, now seen corresponding path program 1 times [2020-09-24 18:25:38,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:38,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237338433] [2020-09-24 18:25:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:43,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-24 18:25:44,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:25:44,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-24 18:25:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 18:25:44,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:44,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:44,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:44,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:44,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:44,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 18:25:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 18:25:44,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 18:25:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:44,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237338433] [2020-09-24 18:25:44,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:44,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:44,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329831414] [2020-09-24 18:25:44,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:44,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:44,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:44,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:44,316 INFO L87 Difference]: Start difference. First operand 1820 states and 2265 transitions. Second operand 5 states. [2020-09-24 18:25:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:46,267 INFO L93 Difference]: Finished difference Result 3801 states and 4855 transitions. [2020-09-24 18:25:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:46,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-09-24 18:25:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:46,284 INFO L225 Difference]: With dead ends: 3801 [2020-09-24 18:25:46,285 INFO L226 Difference]: Without dead ends: 2146 [2020-09-24 18:25:46,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2020-09-24 18:25:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2124. [2020-09-24 18:25:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-09-24 18:25:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2556 transitions. [2020-09-24 18:25:46,354 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2556 transitions. Word has length 204 [2020-09-24 18:25:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:46,354 INFO L479 AbstractCegarLoop]: Abstraction has 2124 states and 2556 transitions. [2020-09-24 18:25:46,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2556 transitions. [2020-09-24 18:25:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-24 18:25:46,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:46,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:46,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:25:46,364 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1701264456, now seen corresponding path program 1 times [2020-09-24 18:25:46,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:46,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032334032] [2020-09-24 18:25:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:47,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking...