/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:54:49,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:54:49,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:54:49,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:54:49,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:54:49,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:54:49,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:54:49,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:54:49,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:54:49,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:54:49,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:54:49,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:54:49,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:54:49,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:54:49,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:54:49,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:54:49,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:54:49,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:54:49,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:54:49,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:54:49,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:54:49,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:54:49,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:54:49,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:54:49,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:54:49,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:54:49,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:54:49,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:54:49,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:54:49,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:54:49,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:54:49,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:54:49,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:54:49,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:54:49,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:54:49,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:54:49,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:54:49,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:54:49,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:54:49,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:54:49,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:54:49,984 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 07:54:50,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:54:50,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:54:50,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:54:50,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:54:50,023 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:54:50,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:54:50,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:54:50,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:54:50,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:54:50,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:54:50,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:54:50,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:54:50,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:54:50,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:54:50,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:54:50,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:54:50,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:54:50,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:54:50,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:54:50,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:54:50,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:54:50,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:54:50,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:54:50,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:54:50,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:54:50,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:54:50,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:54:50,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:54:50,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:54:50,028 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:54:50,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:54:50,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:54:50,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:54:50,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:54:50,516 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:54:50,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 07:54:50,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96236c588/cdf3d73bbbc8492ea7e2a22a8a2db855/FLAGfa5a989b7 [2020-09-25 07:54:51,289 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:54:51,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 07:54:51,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96236c588/cdf3d73bbbc8492ea7e2a22a8a2db855/FLAGfa5a989b7 [2020-09-25 07:54:51,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96236c588/cdf3d73bbbc8492ea7e2a22a8a2db855 [2020-09-25 07:54:51,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:54:51,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:54:51,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:51,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:54:51,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:54:51,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:51" (1/1) ... [2020-09-25 07:54:51,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:51, skipping insertion in model container [2020-09-25 07:54:51,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:51" (1/1) ... [2020-09-25 07:54:51,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:54:51,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:54:52,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:52,109 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:54:52,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:52,333 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:54:52,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52 WrapperNode [2020-09-25 07:54:52,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:52,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:54:52,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:54:52,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:54:52,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (1/1) ... [2020-09-25 07:54:52,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (1/1) ... [2020-09-25 07:54:52,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (1/1) ... [2020-09-25 07:54:52,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (1/1) ... [2020-09-25 07:54:52,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (1/1) ... [2020-09-25 07:54:52,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (1/1) ... [2020-09-25 07:54:52,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (1/1) ... [2020-09-25 07:54:52,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:54:52,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:54:52,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:54:52,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:54:52,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (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 07:54:52,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:54:52,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:54:52,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:54:52,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:54:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:54:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:54:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:54:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:54:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:54:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:54:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:54:53,770 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:54:53,771 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:54:53,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:53 BoogieIcfgContainer [2020-09-25 07:54:53,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:54:53,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:54:53,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:54:53,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:54:53,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:54:51" (1/3) ... [2020-09-25 07:54:53,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174561fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:53, skipping insertion in model container [2020-09-25 07:54:53,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:52" (2/3) ... [2020-09-25 07:54:53,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174561fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:53, skipping insertion in model container [2020-09-25 07:54:53,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:53" (3/3) ... [2020-09-25 07:54:53,798 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-09-25 07:54:53,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:54:53,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:54:53,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:54:53,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:54:53,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:54:53,878 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:54:53,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:54:53,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:54:53,879 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:54:53,879 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:54:53,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:54:53,911 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:54:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 07:54:53,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:53,936 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, 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 07:54:53,936 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:53,944 INFO L82 PathProgramCache]: Analyzing trace with hash 192415938, now seen corresponding path program 1 times [2020-09-25 07:54:53,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:53,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466976957] [2020-09-25 07:54:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:59,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:59,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 07:54:59,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:54:59,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:54:59,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:59,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:54:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 07:54:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:54:59,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:59,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:59,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:59,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:59,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:54:59,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:59,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:59,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:59,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:54:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:59,539 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 07:54:59,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466976957] [2020-09-25 07:54:59,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:59,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:54:59,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114296264] [2020-09-25 07:54:59,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:54:59,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:59,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:54:59,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:54:59,571 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:55:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:01,722 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 07:55:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:01,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 07:55:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:01,748 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 07:55:01,749 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 07:55:01,757 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 07:55:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 07:55:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 07:55:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 07:55:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 07:55:01,864 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 163 [2020-09-25 07:55:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:01,866 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 07:55:01,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 07:55:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 07:55:01,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:01,877 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, 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 07:55:01,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:01,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:01,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:01,878 INFO L82 PathProgramCache]: Analyzing trace with hash 157617646, now seen corresponding path program 1 times [2020-09-25 07:55:01,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:01,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339438458] [2020-09-25 07:55:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:01,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:06,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 07:55:06,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 07:55:06,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:06,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 07:55:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 07:55:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:07,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:55:07,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:55:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:07,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:07,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:07,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:55:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,210 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 07:55:07,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339438458] [2020-09-25 07:55:07,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:07,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:07,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867265884] [2020-09-25 07:55:07,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:07,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:07,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:07,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:07,215 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 07:55:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:09,577 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 07:55:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:09,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 07:55:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:09,586 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 07:55:09,587 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 07:55:09,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 07:55:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 07:55:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 07:55:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 07:55:09,639 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 181 [2020-09-25 07:55:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:09,639 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 07:55:09,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 07:55:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 07:55:09,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:09,646 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, 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 07:55:09,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:09,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1809000221, now seen corresponding path program 1 times [2020-09-25 07:55:09,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:09,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920271294] [2020-09-25 07:55:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:14,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 07:55:14,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:55:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:55:14,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:14,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:55:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:55:14,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:14,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:14,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:14,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:14,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:55:14,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:14,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:14,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:14,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:14,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:55:14,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 07:55:14,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:14,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:55:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:55:15,318 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 07:55:15,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920271294] [2020-09-25 07:55:15,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:15,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:15,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873035892] [2020-09-25 07:55:15,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:15,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:15,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:15,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:15,322 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 8 states. [2020-09-25 07:55:19,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:19,225 INFO L93 Difference]: Finished difference Result 3284 states and 4426 transitions. [2020-09-25 07:55:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:55:19,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-09-25 07:55:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:19,243 INFO L225 Difference]: With dead ends: 3284 [2020-09-25 07:55:19,243 INFO L226 Difference]: Without dead ends: 2000 [2020-09-25 07:55:19,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-09-25 07:55:19,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1950. [2020-09-25 07:55:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-09-25 07:55:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2318 transitions. [2020-09-25 07:55:19,334 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2318 transitions. Word has length 187 [2020-09-25 07:55:19,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:19,334 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2318 transitions. [2020-09-25 07:55:19,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2318 transitions. [2020-09-25 07:55:19,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 07:55:19,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:19,343 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, 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 07:55:19,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:19,344 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:19,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:19,344 INFO L82 PathProgramCache]: Analyzing trace with hash 559246375, now seen corresponding path program 1 times [2020-09-25 07:55:19,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:19,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120924908] [2020-09-25 07:55:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 07:55:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:55:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:24,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:55:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 07:55:24,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:24,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:24,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:24,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:24,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:24,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:24,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:24,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:55:24,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:24,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:55:24,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:24,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:55:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:24,665 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 07:55:24,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120924908] [2020-09-25 07:55:24,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:24,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:24,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454392441] [2020-09-25 07:55:24,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:24,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:24,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:24,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:24,671 INFO L87 Difference]: Start difference. First operand 1950 states and 2318 transitions. Second operand 5 states. [2020-09-25 07:55:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:26,494 INFO L93 Difference]: Finished difference Result 4526 states and 5574 transitions. [2020-09-25 07:55:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:26,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-09-25 07:55:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:26,508 INFO L225 Difference]: With dead ends: 4526 [2020-09-25 07:55:26,508 INFO L226 Difference]: Without dead ends: 1918 [2020-09-25 07:55:26,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 07:55:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-09-25 07:55:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1878. [2020-09-25 07:55:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-09-25 07:55:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2188 transitions. [2020-09-25 07:55:26,592 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2188 transitions. Word has length 197 [2020-09-25 07:55:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:26,593 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2188 transitions. [2020-09-25 07:55:26,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2188 transitions. [2020-09-25 07:55:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 07:55:26,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:26,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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 07:55:26,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:26,603 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:26,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:26,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1532689640, now seen corresponding path program 1 times [2020-09-25 07:55:26,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:26,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557417095] [2020-09-25 07:55:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:31,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 07:55:31,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:55:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:55:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:31,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:55:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:55:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:31,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:31,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:31,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:31,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:31,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:31,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:31,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:31,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:31,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:31,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:31,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:55:31,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:31,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:31,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 07:55:31,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:31,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:55:31,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:31,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:55:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:55:31,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557417095] [2020-09-25 07:55:31,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:31,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:55:31,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43370712] [2020-09-25 07:55:31,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:31,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:31,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:31,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:31,853 INFO L87 Difference]: Start difference. First operand 1878 states and 2188 transitions. Second operand 7 states. [2020-09-25 07:55:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:34,389 INFO L93 Difference]: Finished difference Result 3959 states and 4731 transitions. [2020-09-25 07:55:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:34,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 07:55:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:34,401 INFO L225 Difference]: With dead ends: 3959 [2020-09-25 07:55:34,401 INFO L226 Difference]: Without dead ends: 2103 [2020-09-25 07:55:34,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2020-09-25 07:55:34,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 1913. [2020-09-25 07:55:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-09-25 07:55:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2182 transitions. [2020-09-25 07:55:34,463 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2182 transitions. Word has length 201 [2020-09-25 07:55:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:34,464 INFO L479 AbstractCegarLoop]: Abstraction has 1913 states and 2182 transitions. [2020-09-25 07:55:34,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2182 transitions. [2020-09-25 07:55:34,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 07:55:34,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:34,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:34,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:34,472 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:34,472 INFO L82 PathProgramCache]: Analyzing trace with hash 867383139, now seen corresponding path program 1 times [2020-09-25 07:55:34,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:34,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540340626] [2020-09-25 07:55:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking...