/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:41,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:41,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:41,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:41,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:41,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:41,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:41,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:41,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:41,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:41,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:41,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:41,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:41,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:41,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:41,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:41,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:41,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:41,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:41,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:41,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:41,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:41,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:41,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:41,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:41,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:41,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:41,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:41,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:41,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:41,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:41,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:41,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:41,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:41,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:41,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:41,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:41,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:41,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:41,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:41,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:41,877 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 [2020-09-25 12:26:41,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:41,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:41,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:41,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:41,909 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:41,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:41,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:41,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:41,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:41,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:41,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:41,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:41,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:41,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:41,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:41,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:41,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:41,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:41,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:41,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:41,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:41,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:41,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:41,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:41,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:41,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:41,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:41,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:41,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:41,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:26:42,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:42,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:42,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:42,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:42,464 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:42,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 12:26:42,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0badae1c4/0f628b49d3d94ea08e144133434692af/FLAGcd58ff65b [2020-09-25 12:26:43,169 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:43,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 12:26:43,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0badae1c4/0f628b49d3d94ea08e144133434692af/FLAGcd58ff65b [2020-09-25 12:26:43,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0badae1c4/0f628b49d3d94ea08e144133434692af [2020-09-25 12:26:43,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:43,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:43,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:43,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:43,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:43,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:43" (1/1) ... [2020-09-25 12:26:43,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:43, skipping insertion in model container [2020-09-25 12:26:43,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:43" (1/1) ... [2020-09-25 12:26:43,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:43,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:44,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:44,050 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:44,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:44,308 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:44,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44 WrapperNode [2020-09-25 12:26:44,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:44,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:44,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:44,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:44,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (1/1) ... [2020-09-25 12:26:44,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (1/1) ... [2020-09-25 12:26:44,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (1/1) ... [2020-09-25 12:26:44,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (1/1) ... [2020-09-25 12:26:44,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (1/1) ... [2020-09-25 12:26:44,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (1/1) ... [2020-09-25 12:26:44,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (1/1) ... [2020-09-25 12:26:44,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:44,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:44,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:44,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:44,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:44,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:44,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:44,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:44,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:44,525 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:45,988 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:45,989 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:45,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:45 BoogieIcfgContainer [2020-09-25 12:26:45,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:46,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:46,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:46,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:46,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:43" (1/3) ... [2020-09-25 12:26:46,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218dff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:46, skipping insertion in model container [2020-09-25 12:26:46,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:44" (2/3) ... [2020-09-25 12:26:46,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218dff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:46, skipping insertion in model container [2020-09-25 12:26:46,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:45" (3/3) ... [2020-09-25 12:26:46,008 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 12:26:46,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:46,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:46,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:46,094 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:46,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:46,095 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:46,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:46,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:46,095 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:46,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:46,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 12:26:46,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:46,141 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] [2020-09-25 12:26:46,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 12:26:46,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:46,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302305946] [2020-09-25 12:26:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:47,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 12:26:47,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:47,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-09-25 12:26:47,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:47,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:26:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:26:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:26:47,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:47,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:47,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:26:47,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:47,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:47,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302305946] [2020-09-25 12:26:47,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:47,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:47,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432689778] [2020-09-25 12:26:47,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:47,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:47,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:47,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:47,513 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:49,596 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 12:26:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:49,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 12:26:49,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:49,623 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 12:26:49,623 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 12:26:49,634 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 [2020-09-25 12:26:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 12:26:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 12:26:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 12:26:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 12:26:49,736 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 53 [2020-09-25 12:26:49,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:49,737 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 12:26:49,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 12:26:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 12:26:49,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:49,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:49,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:49,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:49,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:49,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 12:26:49,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:49,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633133274] [2020-09-25 12:26:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:54,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 12:26:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:26:54,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:54,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:26:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:54,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:54,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:54,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:54,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:26:54,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:54,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:55,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:55,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 12:26:55,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:55,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:55,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633133274] [2020-09-25 12:26:55,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:55,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:55,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496806993] [2020-09-25 12:26:55,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:55,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:55,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:55,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:55,171 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 12:26:57,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:57,049 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 12:26:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:57,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 12:26:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:57,057 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 12:26:57,057 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 12:26:57,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:57,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 12:26:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 12:26:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 12:26:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 12:26:57,105 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 132 [2020-09-25 12:26:57,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:57,106 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 12:26:57,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 12:26:57,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 12:26:57,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:57,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:57,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:57,114 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 12:26:57,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:57,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105712520] [2020-09-25 12:26:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:59,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 12:26:59,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2688 [2020-09-25 12:26:59,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:59,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:26:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 12:26:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:00,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:00,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:27:00,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:00,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:27:00,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:00,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 12:27:00,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:00,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:27:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:00,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105712520] [2020-09-25 12:27:00,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:00,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:27:00,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334885918] [2020-09-25 12:27:00,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:27:00,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:00,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:27:00,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:27:00,437 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 12 states. [2020-09-25 12:27:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:04,617 INFO L93 Difference]: Finished difference Result 3131 states and 3961 transitions. [2020-09-25 12:27:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:27:04,618 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 142 [2020-09-25 12:27:04,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:04,647 INFO L225 Difference]: With dead ends: 3131 [2020-09-25 12:27:04,647 INFO L226 Difference]: Without dead ends: 2254 [2020-09-25 12:27:04,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:27:04,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-09-25 12:27:04,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1709. [2020-09-25 12:27:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 12:27:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2134 transitions. [2020-09-25 12:27:04,759 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2134 transitions. Word has length 142 [2020-09-25 12:27:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:04,759 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2134 transitions. [2020-09-25 12:27:04,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:27:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2134 transitions. [2020-09-25 12:27:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 12:27:04,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:04,768 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:04,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:04,769 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:04,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:04,769 INFO L82 PathProgramCache]: Analyzing trace with hash 99423878, now seen corresponding path program 1 times [2020-09-25 12:27:04,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:04,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749118968] [2020-09-25 12:27:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:09,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 12:27:09,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:09,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4478 [2020-09-25 12:27:09,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:09,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 12:27:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:09,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:09,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:09,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:09,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:09,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:09,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:09,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:09,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:09,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 12:27:09,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:09,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:09,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:27:09,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:09,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 12:27:09,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:09,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:27:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 12:27:09,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749118968] [2020-09-25 12:27:09,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:09,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:27:09,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898670467] [2020-09-25 12:27:09,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:27:09,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:09,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:27:09,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:27:09,906 INFO L87 Difference]: Start difference. First operand 1709 states and 2134 transitions. Second operand 9 states. [2020-09-25 12:27:13,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:13,729 INFO L93 Difference]: Finished difference Result 4627 states and 5980 transitions. [2020-09-25 12:27:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:27:13,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2020-09-25 12:27:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:13,749 INFO L225 Difference]: With dead ends: 4627 [2020-09-25 12:27:13,749 INFO L226 Difference]: Without dead ends: 2933 [2020-09-25 12:27:13,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:27:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-09-25 12:27:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 2698. [2020-09-25 12:27:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2698 states. [2020-09-25 12:27:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 3373 transitions. [2020-09-25 12:27:13,837 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 3373 transitions. Word has length 212 [2020-09-25 12:27:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:13,838 INFO L479 AbstractCegarLoop]: Abstraction has 2698 states and 3373 transitions. [2020-09-25 12:27:13,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:27:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 3373 transitions. [2020-09-25 12:27:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 12:27:13,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:13,845 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:13,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:13,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:13,846 INFO L82 PathProgramCache]: Analyzing trace with hash -596487218, now seen corresponding path program 1 times [2020-09-25 12:27:13,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:13,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199851985] [2020-09-25 12:27:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:13,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 12:27:18,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 12:27:18,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:27:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:27:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 12:27:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:19,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:27:19,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:27:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:27:19,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 12:27:19,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 12:27:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 12:27:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:19,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 12:27:19,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:27:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 12:27:20,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199851985] [2020-09-25 12:27:20,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:20,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:27:20,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520097569] [2020-09-25 12:27:20,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:27:20,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:20,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:27:20,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:27:20,067 INFO L87 Difference]: Start difference. First operand 2698 states and 3373 transitions. Second operand 11 states. [2020-09-25 12:27:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:25,659 INFO L93 Difference]: Finished difference Result 8618 states and 11401 transitions. [2020-09-25 12:27:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:27:25,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2020-09-25 12:27:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:25,690 INFO L225 Difference]: With dead ends: 8618 [2020-09-25 12:27:25,690 INFO L226 Difference]: Without dead ends: 6051 [2020-09-25 12:27:25,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:27:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2020-09-25 12:27:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 5163. [2020-09-25 12:27:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5163 states. [2020-09-25 12:27:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 6580 transitions. [2020-09-25 12:27:25,877 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 6580 transitions. Word has length 228 [2020-09-25 12:27:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:25,878 INFO L479 AbstractCegarLoop]: Abstraction has 5163 states and 6580 transitions. [2020-09-25 12:27:25,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:27:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 6580 transitions. [2020-09-25 12:27:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 12:27:25,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:25,885 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:25,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:25,886 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:25,887 INFO L82 PathProgramCache]: Analyzing trace with hash -647276215, now seen corresponding path program 1 times [2020-09-25 12:27:25,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:25,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919354199] [2020-09-25 12:27:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:25,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 12:27:30,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:27:30,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:30,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-25 12:27:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 12:27:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:30,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:27:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:30,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:27:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:27:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:31,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:31,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:27:31,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 12:27:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:31,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 12:27:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 12:27:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:31,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:27:31,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 12:27:31,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:31,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:27:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:31,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919354199] [2020-09-25 12:27:31,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:31,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:27:31,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258683183] [2020-09-25 12:27:31,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:31,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:31,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:31,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:31,519 INFO L87 Difference]: Start difference. First operand 5163 states and 6580 transitions. Second operand 7 states.