/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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:34,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:34,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:34,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:34,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:34,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:34,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:34,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:34,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:34,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:34,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:34,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:34,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:34,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:34,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:34,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:34,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:34,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:34,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:34,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:34,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:34,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:34,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:34,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:34,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:34,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:34,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:34,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:34,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:34,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:34,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:34,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:34,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:34,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:34,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:34,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:34,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:34,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:34,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:34,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:34,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:34,824 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 12:27:34,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:34,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:34,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:34,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:34,881 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:34,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:34,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:34,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:34,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:34,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:34,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:34,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:34,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:34,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:34,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:34,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:34,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:34,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:34,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:34,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:34,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:34,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:34,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:34,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:34,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:34,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:34,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:34,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:34,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:34,888 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 12:27:35,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:35,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:35,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:35,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:35,358 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:35,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 12:27:35,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769fc2b1a/4dda84c32a5a49298f64f1a4c7d1aa0a/FLAGe1e7689fa [2020-09-25 12:27:36,133 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:36,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 12:27:36,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769fc2b1a/4dda84c32a5a49298f64f1a4c7d1aa0a/FLAGe1e7689fa [2020-09-25 12:27:36,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769fc2b1a/4dda84c32a5a49298f64f1a4c7d1aa0a [2020-09-25 12:27:36,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:36,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:36,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:36,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:36,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:36,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:36" (1/1) ... [2020-09-25 12:27:36,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4649669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:36, skipping insertion in model container [2020-09-25 12:27:36,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:36" (1/1) ... [2020-09-25 12:27:36,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:36,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:37,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:37,064 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:37,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:37,221 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:37,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37 WrapperNode [2020-09-25 12:27:37,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:37,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:37,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:37,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:37,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (1/1) ... [2020-09-25 12:27:37,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (1/1) ... [2020-09-25 12:27:37,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (1/1) ... [2020-09-25 12:27:37,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (1/1) ... [2020-09-25 12:27:37,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (1/1) ... [2020-09-25 12:27:37,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (1/1) ... [2020-09-25 12:27:37,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (1/1) ... [2020-09-25 12:27:37,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:37,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:37,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:37,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:37,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (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 12:27:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:38,985 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:38,985 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:39,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:39 BoogieIcfgContainer [2020-09-25 12:27:39,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:39,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:39,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:39,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:39,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:36" (1/3) ... [2020-09-25 12:27:39,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bc7a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:39, skipping insertion in model container [2020-09-25 12:27:39,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:37" (2/3) ... [2020-09-25 12:27:39,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bc7a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:39, skipping insertion in model container [2020-09-25 12:27:39,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:39" (3/3) ... [2020-09-25 12:27:39,017 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 12:27:39,030 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:39,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:39,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:39,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:39,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:39,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:39,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:39,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:39,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:39,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:39,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:39,142 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:27:39,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:39,156 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] [2020-09-25 12:27:39,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 12:27:39,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:39,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509200743] [2020-09-25 12:27:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:40,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:40,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:27:40,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:40,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-25 12:27:40,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:40,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:27:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:40,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:40,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:40,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:40,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:27:40,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:40,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:40,665 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 12:27:40,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509200743] [2020-09-25 12:27:40,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:40,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:27:40,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274295643] [2020-09-25 12:27:40,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:40,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:40,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:40,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:40,708 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 12:27:43,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:43,922 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 12:27:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:27:43,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 12:27:43,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:43,953 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 12:27:43,954 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 12:27:43,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 12:27:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 12:27:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 12:27:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 12:27:44,073 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 12:27:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:44,074 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 12:27:44,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 12:27:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 12:27:44,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:44,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:44,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:44,085 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:44,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:44,085 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 12:27:44,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:44,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967558052] [2020-09-25 12:27:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:47,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 12:27:47,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:47,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3088 [2020-09-25 12:27:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:47,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 12:27:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:47,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:47,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:47,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:27:47,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:47,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:47,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:47,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:47,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 12:27:47,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:47,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:27:47,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:47,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967558052] [2020-09-25 12:27:47,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:47,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:27:47,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327360955] [2020-09-25 12:27:47,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:27:47,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:47,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:27:47,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:27:47,747 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 6 states. [2020-09-25 12:27:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:50,278 INFO L93 Difference]: Finished difference Result 2066 states and 2794 transitions. [2020-09-25 12:27:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:27:50,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-25 12:27:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:50,290 INFO L225 Difference]: With dead ends: 2066 [2020-09-25 12:27:50,290 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 12:27:50,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:50,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 12:27:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1193. [2020-09-25 12:27:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-09-25 12:27:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1577 transitions. [2020-09-25 12:27:50,349 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1577 transitions. Word has length 148 [2020-09-25 12:27:50,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:50,350 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1577 transitions. [2020-09-25 12:27:50,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:27:50,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1577 transitions. [2020-09-25 12:27:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 12:27:50,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:50,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:50,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:50,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:50,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1018487757, now seen corresponding path program 1 times [2020-09-25 12:27:50,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:50,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740501996] [2020-09-25 12:27:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 12:27:55,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:27:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:55,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 12:27:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:55,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:55,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:55,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:27:55,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:55,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:55,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 12:27:55,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:55,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 12:27:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:55,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 12:27:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:56,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740501996] [2020-09-25 12:27:56,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:56,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:56,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850499907] [2020-09-25 12:27:56,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:56,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:56,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:56,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:56,345 INFO L87 Difference]: Start difference. First operand 1193 states and 1577 transitions. Second operand 7 states. [2020-09-25 12:27:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:58,828 INFO L93 Difference]: Finished difference Result 3026 states and 4212 transitions. [2020-09-25 12:27:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:27:58,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-25 12:27:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:58,846 INFO L225 Difference]: With dead ends: 3026 [2020-09-25 12:27:58,846 INFO L226 Difference]: Without dead ends: 1998 [2020-09-25 12:27:58,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:27:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2020-09-25 12:27:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1816. [2020-09-25 12:27:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-09-25 12:27:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2292 transitions. [2020-09-25 12:27:58,940 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2292 transitions. Word has length 215 [2020-09-25 12:27:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:58,945 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2292 transitions. [2020-09-25 12:27:58,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2292 transitions. [2020-09-25 12:27:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 12:27:58,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:58,955 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, 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] [2020-09-25 12:27:58,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:58,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:58,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:58,956 INFO L82 PathProgramCache]: Analyzing trace with hash -2020435647, now seen corresponding path program 1 times [2020-09-25 12:27:58,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:58,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356173617] [2020-09-25 12:27:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 12:28:04,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:28:04,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:28:04,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:04,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:28:04,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:04,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 12:28:04,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:04,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 12:28:04,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 172 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:28:04,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356173617] [2020-09-25 12:28:04,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:04,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:04,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219312731] [2020-09-25 12:28:04,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:04,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:04,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:04,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:04,768 INFO L87 Difference]: Start difference. First operand 1816 states and 2292 transitions. Second operand 10 states. [2020-09-25 12:28:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:07,826 INFO L93 Difference]: Finished difference Result 4044 states and 5261 transitions. [2020-09-25 12:28:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:28:07,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 237 [2020-09-25 12:28:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:07,840 INFO L225 Difference]: With dead ends: 4044 [2020-09-25 12:28:07,841 INFO L226 Difference]: Without dead ends: 2393 [2020-09-25 12:28:07,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:28:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2020-09-25 12:28:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2356. [2020-09-25 12:28:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2356 states. [2020-09-25 12:28:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 2974 transitions. [2020-09-25 12:28:07,921 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 2974 transitions. Word has length 237 [2020-09-25 12:28:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:07,922 INFO L479 AbstractCegarLoop]: Abstraction has 2356 states and 2974 transitions. [2020-09-25 12:28:07,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:28:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 2974 transitions. [2020-09-25 12:28:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 12:28:07,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:07,928 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, 2, 2, 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] [2020-09-25 12:28:07,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:07,929 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:07,929 INFO L82 PathProgramCache]: Analyzing trace with hash 878642836, now seen corresponding path program 1 times [2020-09-25 12:28:07,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:07,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641987646] [2020-09-25 12:28:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:12,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:12,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:12,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 12:28:12,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:28:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:28:12,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:12,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 12:28:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:13,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:13,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:28:13,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:13,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:13,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:13,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:13,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 12:28:13,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:13,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:28:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:13,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:28:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:13,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-25 12:28:13,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:13,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:28:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 12:28:14,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641987646] [2020-09-25 12:28:14,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:14,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:28:14,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129585801] [2020-09-25 12:28:14,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:28:14,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:14,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:28:14,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:28:14,076 INFO L87 Difference]: Start difference. First operand 2356 states and 2974 transitions. Second operand 9 states. [2020-09-25 12:28:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:17,842 INFO L93 Difference]: Finished difference Result 5513 states and 7322 transitions. [2020-09-25 12:28:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:28:17,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2020-09-25 12:28:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:17,861 INFO L225 Difference]: With dead ends: 5513 [2020-09-25 12:28:17,861 INFO L226 Difference]: Without dead ends: 3308 [2020-09-25 12:28:17,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2020-09-25 12:28:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 2973. [2020-09-25 12:28:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2973 states. [2020-09-25 12:28:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 3733 transitions. [2020-09-25 12:28:17,950 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 3733 transitions. Word has length 241 [2020-09-25 12:28:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:17,951 INFO L479 AbstractCegarLoop]: Abstraction has 2973 states and 3733 transitions. [2020-09-25 12:28:17,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:28:17,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 3733 transitions. [2020-09-25 12:28:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 12:28:17,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:17,961 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:28:17,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:17,961 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:17,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:17,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249918, now seen corresponding path program 1 times [2020-09-25 12:28:17,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:17,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834406132] [2020-09-25 12:28:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:19,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:23,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-09-25 12:28:23,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:28:23,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:28:23,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:23,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 12:28:23,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0