/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=0.4 --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/Problem02_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:19,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:19,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:19,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:19,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:19,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:19,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:19,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:19,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:19,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:19,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:19,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:19,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:19,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:19,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:19,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:19,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:19,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:19,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:19,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:19,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:19,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:19,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:19,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:19,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:19,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:19,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:19,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:19,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:19,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:19,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:19,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:19,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:19,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:19,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:19,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:19,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:19,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:19,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:19,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:19,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:19,876 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 13:33:19,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:19,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:19,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:19,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:19,919 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:19,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:19,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:19,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:19,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:19,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:19,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:19,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:19,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:19,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:19,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:19,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:19,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:19,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:19,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:19,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:19,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:19,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:19,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:19,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:19,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:19,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:19,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:19,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:19,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:19,930 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:33:20,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:20,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:20,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:20,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:20,428 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:20,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 13:33:20,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45db8c88/1b94c2747818457e934fc0a019caabf9/FLAG46104e1cb [2020-09-25 13:33:21,134 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:21,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 13:33:21,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45db8c88/1b94c2747818457e934fc0a019caabf9/FLAG46104e1cb [2020-09-25 13:33:21,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45db8c88/1b94c2747818457e934fc0a019caabf9 [2020-09-25 13:33:21,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:21,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:21,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:21,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:21,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:21,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:21" (1/1) ... [2020-09-25 13:33:21,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36345b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:21, skipping insertion in model container [2020-09-25 13:33:21,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:21" (1/1) ... [2020-09-25 13:33:21,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:21,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:21,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:22,000 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:22,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:22,171 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:22,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22 WrapperNode [2020-09-25 13:33:22,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:22,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:22,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:22,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:22,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (1/1) ... [2020-09-25 13:33:22,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (1/1) ... [2020-09-25 13:33:22,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (1/1) ... [2020-09-25 13:33:22,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (1/1) ... [2020-09-25 13:33:22,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (1/1) ... [2020-09-25 13:33:22,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (1/1) ... [2020-09-25 13:33:22,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (1/1) ... [2020-09-25 13:33:22,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:22,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:22,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:22,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:22,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (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 13:33:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:23,877 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:23,877 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:23,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:23 BoogieIcfgContainer [2020-09-25 13:33:23,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:23,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:23,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:23,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:23,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:21" (1/3) ... [2020-09-25 13:33:23,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467d4b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:23, skipping insertion in model container [2020-09-25 13:33:23,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:22" (2/3) ... [2020-09-25 13:33:23,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467d4b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:23, skipping insertion in model container [2020-09-25 13:33:23,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:23" (3/3) ... [2020-09-25 13:33:23,898 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2020-09-25 13:33:23,910 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:23,921 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:23,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:23,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:23,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:23,986 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:23,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:23,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:23,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:23,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:23,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:24,030 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:33:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 13:33:24,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:24,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:24,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:24,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:24,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1788019222, now seen corresponding path program 1 times [2020-09-25 13:33:24,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:24,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776850861] [2020-09-25 13:33:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:24,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 13:33:29,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:33:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:33:29,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:29,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:33:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 13:33:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:29,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:29,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:33:29,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:29,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:29,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:33:29,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:29,702 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 13:33:29,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776850861] [2020-09-25 13:33:29,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:29,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:29,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540696602] [2020-09-25 13:33:29,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:29,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:29,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:29,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:29,737 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:33:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:32,047 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 13:33:32,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:32,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-09-25 13:33:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:32,076 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 13:33:32,077 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 13:33:32,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 13:33:32,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 13:33:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 13:33:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 13:33:32,221 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 117 [2020-09-25 13:33:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:32,223 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 13:33:32,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 13:33:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 13:33:32,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:32,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:32,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:32,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:32,232 INFO L82 PathProgramCache]: Analyzing trace with hash -890048490, now seen corresponding path program 1 times [2020-09-25 13:33:32,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:32,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843458002] [2020-09-25 13:33:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:37,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 13:33:37,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:33:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:37,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:37,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:33:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:33:37,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:37,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:37,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:37,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:37,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:33:37,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:37,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:37,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:37,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:37,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:33:37,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:37,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:37,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:37,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:37,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:33:37,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:37,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843458002] [2020-09-25 13:33:37,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:37,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:37,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442768850] [2020-09-25 13:33:37,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:37,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:37,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:37,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:37,585 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 13:33:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:39,346 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-25 13:33:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:39,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 13:33:39,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:39,362 INFO L225 Difference]: With dead ends: 1662 [2020-09-25 13:33:39,363 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 13:33:39,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 13:33:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-25 13:33:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 13:33:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-25 13:33:39,419 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 135 [2020-09-25 13:33:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:39,420 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-25 13:33:39,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-25 13:33:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 13:33:39,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:39,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:39,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:39,425 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:39,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:39,426 INFO L82 PathProgramCache]: Analyzing trace with hash 647315157, now seen corresponding path program 1 times [2020-09-25 13:33:39,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:39,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023320857] [2020-09-25 13:33:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:44,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 13:33:44,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:44,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:44,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:44,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:44,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:44,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:33:44,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:33:44,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:44,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:44,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:33:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:44,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:44,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:33:44,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:33:44,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:44,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:33:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:44,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023320857] [2020-09-25 13:33:44,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:44,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:44,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782970286] [2020-09-25 13:33:44,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:44,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:44,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:44,696 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-25 13:33:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:46,747 INFO L93 Difference]: Finished difference Result 2094 states and 2618 transitions. [2020-09-25 13:33:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:46,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 13:33:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:46,759 INFO L225 Difference]: With dead ends: 2094 [2020-09-25 13:33:46,759 INFO L226 Difference]: Without dead ends: 1145 [2020-09-25 13:33:46,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:46,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-09-25 13:33:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1123. [2020-09-25 13:33:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-09-25 13:33:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1356 transitions. [2020-09-25 13:33:46,812 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1356 transitions. Word has length 136 [2020-09-25 13:33:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:46,814 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1356 transitions. [2020-09-25 13:33:46,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1356 transitions. [2020-09-25 13:33:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 13:33:46,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:46,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:46,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:46,825 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:46,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1826679112, now seen corresponding path program 1 times [2020-09-25 13:33:46,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:46,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414484499] [2020-09-25 13:33:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:51,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 13:33:51,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:33:51,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:33:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:51,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:33:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:33:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:51,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:51,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:51,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:51,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:52,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:52,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:33:52,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:52,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:52,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414484499] [2020-09-25 13:33:52,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:52,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:52,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108205690] [2020-09-25 13:33:52,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:52,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:52,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:52,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:52,106 INFO L87 Difference]: Start difference. First operand 1123 states and 1356 transitions. Second operand 5 states. [2020-09-25 13:33:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:54,079 INFO L93 Difference]: Finished difference Result 2850 states and 3612 transitions. [2020-09-25 13:33:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:54,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 13:33:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:54,092 INFO L225 Difference]: With dead ends: 2850 [2020-09-25 13:33:54,092 INFO L226 Difference]: Without dead ends: 1749 [2020-09-25 13:33:54,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:54,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-25 13:33:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1727. [2020-09-25 13:33:54,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-09-25 13:33:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2136 transitions. [2020-09-25 13:33:54,170 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2136 transitions. Word has length 139 [2020-09-25 13:33:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:54,170 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2136 transitions. [2020-09-25 13:33:54,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2136 transitions. [2020-09-25 13:33:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 13:33:54,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:54,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:54,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:54,180 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:54,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1390795991, now seen corresponding path program 1 times [2020-09-25 13:33:54,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:54,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019127808] [2020-09-25 13:33:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 13:33:59,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:33:59,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-25 13:33:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:33:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:59,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:59,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:59,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:59,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:33:59,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:59,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 13:33:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:59,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:33:59,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:33:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 13:33:59,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019127808] [2020-09-25 13:33:59,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:59,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:59,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677945689] [2020-09-25 13:33:59,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:59,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:59,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:59,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:59,516 INFO L87 Difference]: Start difference. First operand 1727 states and 2136 transitions. Second operand 5 states. [2020-09-25 13:34:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:01,481 INFO L93 Difference]: Finished difference Result 4090 states and 5249 transitions. [2020-09-25 13:34:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:01,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-25 13:34:01,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:01,500 INFO L225 Difference]: With dead ends: 4090 [2020-09-25 13:34:01,501 INFO L226 Difference]: Without dead ends: 2385 [2020-09-25 13:34:01,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:01,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2020-09-25 13:34:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2336. [2020-09-25 13:34:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2020-09-25 13:34:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 2825 transitions. [2020-09-25 13:34:01,572 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 2825 transitions. Word has length 177 [2020-09-25 13:34:01,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:01,573 INFO L479 AbstractCegarLoop]: Abstraction has 2336 states and 2825 transitions. [2020-09-25 13:34:01,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 2825 transitions. [2020-09-25 13:34:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 13:34:01,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:01,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:01,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:01,582 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:01,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:01,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1702439527, now seen corresponding path program 1 times [2020-09-25 13:34:01,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:01,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186606061] [2020-09-25 13:34:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:06,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 13:34:06,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:34:06,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:06,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:34:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:34:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:34:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:07,345 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2020-09-25 13:34:07,476 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-09-25 13:34:07,612 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 31 [2020-09-25 13:34:07,739 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 28 [2020-09-25 13:34:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:34:07,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:34:07,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:07,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:07,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:34:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:07,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:34:07,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:34:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:07,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 13:34:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:08,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:34:08,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 13:34:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:08,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:34:08,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:34:08,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186606061] [2020-09-25 13:34:08,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:08,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:34:08,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385525214] [2020-09-25 13:34:08,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:34:08,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:08,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:34:08,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:34:08,378 INFO L87 Difference]: Start difference. First operand 2336 states and 2825 transitions. Second operand 15 states.