/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/Problem02_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:49,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:49,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:49,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:49,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:49,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:49,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:49,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:49,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:49,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:49,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:49,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:49,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:49,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:49,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:49,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:49,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:49,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:49,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:49,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:49,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:49,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:49,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:49,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:49,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:49,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:49,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:49,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:49,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:49,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:49,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:49,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:49,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:49,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:49,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:49,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:49,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:49,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:49,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:49,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:49,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:49,943 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 12:22:49,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:49,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:49,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:49,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:49,980 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:49,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:49,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:49,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:49,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:49,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:49,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:49,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:49,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:49,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:49,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:49,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:49,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:49,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:49,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:49,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:49,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:49,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:49,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:49,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:49,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:49,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:49,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:49,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:49,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:49,986 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 12:22:50,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:50,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:50,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:50,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:50,436 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:50,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 12:22:50,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51c34bdd8/6b89d8145298477a9d3b8024a235a9f8/FLAGd6b55af2f [2020-09-25 12:22:51,195 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:51,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 12:22:51,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51c34bdd8/6b89d8145298477a9d3b8024a235a9f8/FLAGd6b55af2f [2020-09-25 12:22:51,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51c34bdd8/6b89d8145298477a9d3b8024a235a9f8 [2020-09-25 12:22:51,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:51,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:51,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:51,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:51,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:51,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:51" (1/1) ... [2020-09-25 12:22:51,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e983976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:51, skipping insertion in model container [2020-09-25 12:22:51,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:51" (1/1) ... [2020-09-25 12:22:51,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:51,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:52,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:52,089 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:52,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:52,203 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:52,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52 WrapperNode [2020-09-25 12:22:52,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:52,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:52,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:52,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:52,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (1/1) ... [2020-09-25 12:22:52,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (1/1) ... [2020-09-25 12:22:52,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (1/1) ... [2020-09-25 12:22:52,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (1/1) ... [2020-09-25 12:22:52,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (1/1) ... [2020-09-25 12:22:52,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (1/1) ... [2020-09-25 12:22:52,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (1/1) ... [2020-09-25 12:22:52,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:52,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:52,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:52,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:52,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (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 12:22:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:53,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:53,781 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:53,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:53 BoogieIcfgContainer [2020-09-25 12:22:53,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:53,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:53,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:53,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:53,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:51" (1/3) ... [2020-09-25 12:22:53,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24987324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:53, skipping insertion in model container [2020-09-25 12:22:53,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:52" (2/3) ... [2020-09-25 12:22:53,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24987324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:53, skipping insertion in model container [2020-09-25 12:22:53,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:53" (3/3) ... [2020-09-25 12:22:53,802 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2020-09-25 12:22:53,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:53,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:53,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:53,890 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:53,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:53,891 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:53,891 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:53,891 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:53,891 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:53,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:53,892 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:53,927 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:22:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 12:22:53,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:53,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:53,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:53,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:53,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1323495626, now seen corresponding path program 1 times [2020-09-25 12:22:53,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:53,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136799180] [2020-09-25 12:22:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:59,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:59,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:59,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 12:22:59,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:59,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 12:22:59,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:59,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:22:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 12:22:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:22:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:59,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:59,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:22:59,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:59,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:22:59,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:59,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:22:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:59,677 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 12:22:59,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136799180] [2020-09-25 12:22:59,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:59,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:22:59,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765089680] [2020-09-25 12:22:59,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:22:59,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:59,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:22:59,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:22:59,714 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:23:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:02,070 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 12:23:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:02,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 12:23:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:02,125 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 12:23:02,125 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 12:23:02,138 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 12:23:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 12:23:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 12:23:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 12:23:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 12:23:02,251 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 141 [2020-09-25 12:23:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:02,252 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 12:23:02,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:23:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 12:23:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 12:23:02,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:02,261 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, 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 12:23:02,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:02,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:02,262 INFO L82 PathProgramCache]: Analyzing trace with hash -427811082, now seen corresponding path program 1 times [2020-09-25 12:23:02,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:02,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146312147] [2020-09-25 12:23:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:04,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:07,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 12:23:07,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:23:07,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 12:23:07,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:07,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:23:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 12:23:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:07,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:07,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:07,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:07,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:07,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:07,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:23:07,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:23:07,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:07,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:23:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:07,568 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 12:23:07,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146312147] [2020-09-25 12:23:07,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:07,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:07,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471824837] [2020-09-25 12:23:07,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:07,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:07,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:07,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:07,573 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 12:23:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:09,987 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 12:23:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:09,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 12:23:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:10,008 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 12:23:10,009 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 12:23:10,012 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 12:23:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 12:23:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 12:23:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 12:23:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 12:23:10,057 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 159 [2020-09-25 12:23:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:10,058 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 12:23:10,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 12:23:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 12:23:10,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:10,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:10,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:23:10,065 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:10,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1532325973, now seen corresponding path program 1 times [2020-09-25 12:23:10,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:10,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816916588] [2020-09-25 12:23:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:15,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:15,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:23:15,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:23:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:23:15,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:15,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:23:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:23:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:15,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:15,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:15,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:15,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:15,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:23:15,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:15,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:15,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:15,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:15,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:23:15,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:15,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:23:15,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:15,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:15,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:23:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:15,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816916588] [2020-09-25 12:23:15,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:15,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:23:15,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318087284] [2020-09-25 12:23:15,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:23:15,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:15,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:23:15,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:15,402 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 6 states. [2020-09-25 12:23:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:17,171 INFO L93 Difference]: Finished difference Result 2711 states and 3513 transitions. [2020-09-25 12:23:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:17,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-25 12:23:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:17,183 INFO L225 Difference]: With dead ends: 2711 [2020-09-25 12:23:17,184 INFO L226 Difference]: Without dead ends: 1678 [2020-09-25 12:23:17,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:23:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-25 12:23:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1507. [2020-09-25 12:23:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-09-25 12:23:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1959 transitions. [2020-09-25 12:23:17,263 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1959 transitions. Word has length 165 [2020-09-25 12:23:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:17,263 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 1959 transitions. [2020-09-25 12:23:17,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:23:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1959 transitions. [2020-09-25 12:23:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 12:23:17,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:17,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:17,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:23:17,279 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1927343599, now seen corresponding path program 1 times [2020-09-25 12:23:17,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:17,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057678411] [2020-09-25 12:23:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:17,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:22,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:22,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 12:23:22,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:22,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:23:22,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:22,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 12:23:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 12:23:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:22,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:22,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:22,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:22,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:22,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:23:22,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:22,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:22,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:22,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:22,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:23:22,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:23:22,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:22,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:23:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:23:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:22,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057678411] [2020-09-25 12:23:22,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:22,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:22,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398855975] [2020-09-25 12:23:22,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:22,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:22,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:22,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:22,606 INFO L87 Difference]: Start difference. First operand 1507 states and 1959 transitions. Second operand 5 states. [2020-09-25 12:23:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:24,625 INFO L93 Difference]: Finished difference Result 3955 states and 5363 transitions. [2020-09-25 12:23:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:24,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 12:23:24,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:24,643 INFO L225 Difference]: With dead ends: 3955 [2020-09-25 12:23:24,644 INFO L226 Difference]: Without dead ends: 2470 [2020-09-25 12:23:24,652 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 12:23:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2020-09-25 12:23:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2270. [2020-09-25 12:23:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2270 states. [2020-09-25 12:23:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 2861 transitions. [2020-09-25 12:23:24,763 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 2861 transitions. Word has length 175 [2020-09-25 12:23:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:24,764 INFO L479 AbstractCegarLoop]: Abstraction has 2270 states and 2861 transitions. [2020-09-25 12:23:24,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:24,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 2861 transitions. [2020-09-25 12:23:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 12:23:24,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:24,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:23:24,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:24,777 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:24,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1193444011, now seen corresponding path program 1 times [2020-09-25 12:23:24,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:24,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474350890] [2020-09-25 12:23:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:24,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:29,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 12:23:29,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:29,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:23:29,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:29,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:23:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 12:23:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:29,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:29,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:29,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:29,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:23:30,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:30,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:23:30,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:30,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:23:30,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:30,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:23:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:23:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 12:23:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:30,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:23:30,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 12:23:30,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:30,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 12:23:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:23:30,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474350890] [2020-09-25 12:23:30,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:30,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:23:30,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828685392] [2020-09-25 12:23:30,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:23:30,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:30,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:23:30,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:23:30,466 INFO L87 Difference]: Start difference. First operand 2270 states and 2861 transitions. Second operand 7 states. [2020-09-25 12:23:33,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:33,882 INFO L93 Difference]: Finished difference Result 7533 states and 10485 transitions. [2020-09-25 12:23:33,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:23:33,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-09-25 12:23:33,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:33,917 INFO L225 Difference]: With dead ends: 7533 [2020-09-25 12:23:33,918 INFO L226 Difference]: Without dead ends: 4685 [2020-09-25 12:23:33,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:23:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4685 states. [2020-09-25 12:23:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4685 to 4253. [2020-09-25 12:23:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4253 states. [2020-09-25 12:23:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 5507 transitions. [2020-09-25 12:23:34,108 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 5507 transitions. Word has length 250 [2020-09-25 12:23:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:34,109 INFO L479 AbstractCegarLoop]: Abstraction has 4253 states and 5507 transitions. [2020-09-25 12:23:34,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:23:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 5507 transitions. [2020-09-25 12:23:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-25 12:23:34,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:34,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:23:34,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:23:34,139 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1156040154, now seen corresponding path program 1 times [2020-09-25 12:23:34,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:34,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922057191] [2020-09-25 12:23:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:34,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:37,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-09-25 12:23:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:23:39,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:23:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 12:23:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:39,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:39,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:23:39,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:39,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:23:39,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:39,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:23:39,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:23:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:39,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:23:39,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 12:23:39,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:23:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:39,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 12:23:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:23:39,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 12:23:39,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:39,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 12:23:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 158 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:23:39,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922057191] [2020-09-25 12:23:39,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:39,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:23:39,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116386220] [2020-09-25 12:23:39,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:23:39,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:39,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:23:39,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:23:39,823 INFO L87 Difference]: Start difference. First operand 4253 states and 5507 transitions. Second operand 7 states.