/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:07,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:07,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:07,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:07,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:07,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:07,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:07,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:07,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:07,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:07,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:07,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:07,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:07,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:07,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:07,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:07,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:07,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:07,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:07,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:07,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:07,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:07,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:07,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:07,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:07,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:07,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:07,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:07,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:07,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:07,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:07,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:07,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:07,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:07,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:07,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:07,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:07,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:07,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:07,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:07,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:07,994 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 05:33:08,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:08,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:08,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:08,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:08,021 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:08,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:08,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:08,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:08,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:08,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:08,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:08,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:08,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:08,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:08,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:08,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:08,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:08,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:08,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:08,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:08,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:08,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:08,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:08,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:08,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:08,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:08,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:08,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:08,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:08,027 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:33:08,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:08,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:08,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:08,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:08,523 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:08,524 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 05:33:08,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3a42a14e/cfd2d937b7e3414d878bdd92d379e0aa/FLAG213f90f65 [2020-09-25 05:33:09,282 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:09,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 05:33:09,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3a42a14e/cfd2d937b7e3414d878bdd92d379e0aa/FLAG213f90f65 [2020-09-25 05:33:09,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3a42a14e/cfd2d937b7e3414d878bdd92d379e0aa [2020-09-25 05:33:09,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:09,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:09,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:09,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:09,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:09,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:09" (1/1) ... [2020-09-25 05:33:09,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67578ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:09, skipping insertion in model container [2020-09-25 05:33:09,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:09" (1/1) ... [2020-09-25 05:33:09,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:09,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:10,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:10,186 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:10,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:10,415 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:10,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10 WrapperNode [2020-09-25 05:33:10,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:10,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:10,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:10,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:10,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (1/1) ... [2020-09-25 05:33:10,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (1/1) ... [2020-09-25 05:33:10,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (1/1) ... [2020-09-25 05:33:10,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (1/1) ... [2020-09-25 05:33:10,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (1/1) ... [2020-09-25 05:33:10,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (1/1) ... [2020-09-25 05:33:10,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (1/1) ... [2020-09-25 05:33:10,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:10,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:10,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:10,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:10,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (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 05:33:10,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:10,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:11,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:11,920 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:11,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:11 BoogieIcfgContainer [2020-09-25 05:33:11,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:11,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:11,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:11,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:11,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:09" (1/3) ... [2020-09-25 05:33:11,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126a10f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:11, skipping insertion in model container [2020-09-25 05:33:11,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:10" (2/3) ... [2020-09-25 05:33:11,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126a10f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:11, skipping insertion in model container [2020-09-25 05:33:11,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:11" (3/3) ... [2020-09-25 05:33:11,940 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-25 05:33:11,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:11,963 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:11,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:12,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:12,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:12,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:12,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:12,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:12,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:12,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:12,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:12,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 05:33:12,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:12,086 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] [2020-09-25 05:33:12,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:12,093 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-25 05:33:12,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:12,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385514649] [2020-09-25 05:33:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:12,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:17,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 05:33:17,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:33:17,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-09-25 05:33:17,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:17,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 05:33:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:33:17,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:17,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:17,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:17,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:17,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:33:17,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:17,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:17,790 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 05:33:17,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385514649] [2020-09-25 05:33:17,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:17,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:17,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4993708] [2020-09-25 05:33:17,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:17,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:17,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:17,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:17,827 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:20,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:20,303 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 05:33:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:20,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-25 05:33:20,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:20,348 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 05:33:20,348 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 05:33:20,360 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 05:33:20,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 05:33:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 05:33:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 05:33:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 05:33:20,488 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 152 [2020-09-25 05:33:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:20,494 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 05:33:20,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 05:33:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 05:33:20,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:20,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:20,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:20,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:20,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:20,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1669034880, now seen corresponding path program 1 times [2020-09-25 05:33:20,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:20,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88097364] [2020-09-25 05:33:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 05:33:25,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:25,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 05:33:25,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:33:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:33:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 05:33:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:25,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:33:25,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:25,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:25,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:25,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:33:25,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:26,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:26,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 05:33:26,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:26,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:33:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:26,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88097364] [2020-09-25 05:33:26,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:26,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:33:26,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165677410] [2020-09-25 05:33:26,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:33:26,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:26,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:33:26,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:33:26,258 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 05:33:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:31,246 INFO L93 Difference]: Finished difference Result 2178 states and 2848 transitions. [2020-09-25 05:33:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:33:31,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 173 [2020-09-25 05:33:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:31,260 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 05:33:31,261 INFO L226 Difference]: Without dead ends: 1100 [2020-09-25 05:33:31,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:33:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-25 05:33:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1064. [2020-09-25 05:33:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-25 05:33:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1200 transitions. [2020-09-25 05:33:31,327 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1200 transitions. Word has length 173 [2020-09-25 05:33:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:31,328 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1200 transitions. [2020-09-25 05:33:31,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:33:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1200 transitions. [2020-09-25 05:33:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 05:33:31,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:31,335 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] [2020-09-25 05:33:31,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:31,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:31,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:31,336 INFO L82 PathProgramCache]: Analyzing trace with hash -139356601, now seen corresponding path program 1 times [2020-09-25 05:33:31,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:31,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507782529] [2020-09-25 05:33:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 05:33:36,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:36,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-09-25 05:33:36,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 05:33:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 05:33:36,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:36,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:33:36,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:36,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:36,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:36,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:36,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:33:36,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:33:36,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:36,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:33:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:36,808 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 05:33:36,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507782529] [2020-09-25 05:33:36,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:36,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:36,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928240621] [2020-09-25 05:33:36,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:36,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:36,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:36,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:36,813 INFO L87 Difference]: Start difference. First operand 1064 states and 1200 transitions. Second operand 5 states. [2020-09-25 05:33:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:38,552 INFO L93 Difference]: Finished difference Result 2456 states and 2855 transitions. [2020-09-25 05:33:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:33:38,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 05:33:38,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:38,565 INFO L225 Difference]: With dead ends: 2456 [2020-09-25 05:33:38,566 INFO L226 Difference]: Without dead ends: 1416 [2020-09-25 05:33:38,569 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 05:33:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-09-25 05:33:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1352. [2020-09-25 05:33:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-09-25 05:33:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1563 transitions. [2020-09-25 05:33:38,623 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1563 transitions. Word has length 178 [2020-09-25 05:33:38,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:38,623 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1563 transitions. [2020-09-25 05:33:38,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:38,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1563 transitions. [2020-09-25 05:33:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 05:33:38,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:38,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:33:38,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:33:38,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:38,631 INFO L82 PathProgramCache]: Analyzing trace with hash -114572164, now seen corresponding path program 1 times [2020-09-25 05:33:38,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:38,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144561583] [2020-09-25 05:33:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:43,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 05:33:43,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:33:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:33:43,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:43,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 05:33:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:33:43,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:43,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:43,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:43,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:33:43,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:43,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:43,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:43,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:43,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:33:43,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:33:43,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:43,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:33:43,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:43,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:33:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:43,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:43,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:33:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:33:43,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:43,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:33:43,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:44,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144561583] [2020-09-25 05:33:44,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:44,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:33:44,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101883603] [2020-09-25 05:33:44,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:44,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:44,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:44,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:44,004 INFO L87 Difference]: Start difference. First operand 1352 states and 1563 transitions. Second operand 7 states. [2020-09-25 05:33:46,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:46,525 INFO L93 Difference]: Finished difference Result 3232 states and 3930 transitions. [2020-09-25 05:33:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:33:46,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-25 05:33:46,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:46,547 INFO L225 Difference]: With dead ends: 3232 [2020-09-25 05:33:46,547 INFO L226 Difference]: Without dead ends: 1904 [2020-09-25 05:33:46,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:33:46,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-09-25 05:33:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1533. [2020-09-25 05:33:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1533 states. [2020-09-25 05:33:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 1782 transitions. [2020-09-25 05:33:46,665 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 1782 transitions. Word has length 197 [2020-09-25 05:33:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:46,667 INFO L479 AbstractCegarLoop]: Abstraction has 1533 states and 1782 transitions. [2020-09-25 05:33:46,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 1782 transitions. [2020-09-25 05:33:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 05:33:46,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:46,678 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:46,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:33:46,679 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:46,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:46,680 INFO L82 PathProgramCache]: Analyzing trace with hash -121682923, now seen corresponding path program 1 times [2020-09-25 05:33:46,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:46,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365386474] [2020-09-25 05:33:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 05:33:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:33:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 05:33:51,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 05:33:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:33:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:51,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:33:51,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:51,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 05:33:51,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:33:51,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:51,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:51,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:33:51,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 05:33:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:33:51,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:33:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:33:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:52,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365386474] [2020-09-25 05:33:52,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:52,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:33:52,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32063040] [2020-09-25 05:33:52,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:52,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:52,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:52,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:52,047 INFO L87 Difference]: Start difference. First operand 1533 states and 1782 transitions. Second operand 7 states.