/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:32,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:32,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:32,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:32,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:32,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:32,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:32,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:32,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:32,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:32,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:32,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:32,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:32,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:32,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:32,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:32,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:32,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:32,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:32,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:32,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:32,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:32,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:32,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:32,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:32,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:32,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:32,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:32,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:32,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:32,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:32,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:32,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:32,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:32,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:32,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:32,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:32,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:32,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:32,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:32,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:32,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:25:33,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:33,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:33,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:33,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:33,014 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:33,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:33,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:33,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:33,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:33,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:33,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:33,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:33,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:33,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:33,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:33,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:33,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:33,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:33,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:33,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:33,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:33,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:33,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:33,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:33,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:33,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:33,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:33,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:33,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:33,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:25:33,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:33,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:33,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:33,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:33,506 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:33,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 12:25:33,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4291801e7/7261c03dd0014bc3af4c6e8391d30813/FLAG3bc8a6d9d [2020-09-25 12:25:34,217 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:34,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 12:25:34,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4291801e7/7261c03dd0014bc3af4c6e8391d30813/FLAG3bc8a6d9d [2020-09-25 12:25:34,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4291801e7/7261c03dd0014bc3af4c6e8391d30813 [2020-09-25 12:25:34,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:34,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:34,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:34,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:34,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:34,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:34" (1/1) ... [2020-09-25 12:25:34,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:34, skipping insertion in model container [2020-09-25 12:25:34,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:34" (1/1) ... [2020-09-25 12:25:34,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:34,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:34,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:35,001 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:35,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:35,231 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:35,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35 WrapperNode [2020-09-25 12:25:35,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:35,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:35,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:35,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:35,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (1/1) ... [2020-09-25 12:25:35,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (1/1) ... [2020-09-25 12:25:35,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (1/1) ... [2020-09-25 12:25:35,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (1/1) ... [2020-09-25 12:25:35,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (1/1) ... [2020-09-25 12:25:35,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (1/1) ... [2020-09-25 12:25:35,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (1/1) ... [2020-09-25 12:25:35,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:35,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:35,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:35,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:35,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:35,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:35,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:35,437 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:35,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:36,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:36,682 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:36,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:36 BoogieIcfgContainer [2020-09-25 12:25:36,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:36,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:36,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:36,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:36,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:34" (1/3) ... [2020-09-25 12:25:36,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:36, skipping insertion in model container [2020-09-25 12:25:36,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:35" (2/3) ... [2020-09-25 12:25:36,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:36, skipping insertion in model container [2020-09-25 12:25:36,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:36" (3/3) ... [2020-09-25 12:25:36,700 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 12:25:36,711 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:36,723 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:36,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:36,782 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:36,782 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:36,782 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:36,782 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:36,783 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:36,783 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:36,783 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:36,783 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:25:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 12:25:36,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:36,841 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] [2020-09-25 12:25:36,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:36,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 12:25:36,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:36,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 12:25:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:41,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:41,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:41,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:42,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 12:25:42,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:25:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:25:42,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:42,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:42,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:25:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 12:25:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:25:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:42,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:42,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:25:42,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:42,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:25:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:42,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 12:25:42,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:42,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:42,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986560252] [2020-09-25 12:25:42,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:42,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:42,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:42,503 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:44,686 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 12:25:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:44,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 12:25:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:44,721 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 12:25:44,722 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 12:25:44,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 12:25:44,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 12:25:44,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 12:25:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 12:25:44,841 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 131 [2020-09-25 12:25:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:44,842 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 12:25:44,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 12:25:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 12:25:44,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:44,852 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] [2020-09-25 12:25:44,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:44,855 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:44,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1110069102, now seen corresponding path program 1 times [2020-09-25 12:25:44,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:44,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577182138] [2020-09-25 12:25:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:45,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:46,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:47,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:49,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:49,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 12:25:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:25:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:25:49,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:49,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:25:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:25:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:50,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:50,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:50,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:50,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:50,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:50,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:50,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:50,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:50,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:50,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:25:50,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:50,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:25:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:50,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577182138] [2020-09-25 12:25:50,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:50,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:50,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064725467] [2020-09-25 12:25:50,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:50,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:50,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:50,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:50,164 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 12:25:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:51,658 INFO L93 Difference]: Finished difference Result 1624 states and 2084 transitions. [2020-09-25 12:25:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:51,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 12:25:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:51,666 INFO L225 Difference]: With dead ends: 1624 [2020-09-25 12:25:51,666 INFO L226 Difference]: Without dead ends: 981 [2020-09-25 12:25:51,669 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 12:25:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-09-25 12:25:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 969. [2020-09-25 12:25:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-25 12:25:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1223 transitions. [2020-09-25 12:25:51,716 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1223 transitions. Word has length 149 [2020-09-25 12:25:51,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:51,717 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1223 transitions. [2020-09-25 12:25:51,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1223 transitions. [2020-09-25 12:25:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 12:25:51,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:51,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:51,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:51,726 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:51,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:51,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2022394144, now seen corresponding path program 1 times [2020-09-25 12:25:51,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:51,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005575782] [2020-09-25 12:25:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 12:25:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:25:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 12:25:56,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:25:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 12:25:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:56,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:56,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:56,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:56,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:56,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:56,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:56,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:25:56,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:56,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:25:56,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:25:56,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:57,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005575782] [2020-09-25 12:25:57,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:57,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:57,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796640084] [2020-09-25 12:25:57,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:57,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:57,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:57,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:57,092 INFO L87 Difference]: Start difference. First operand 969 states and 1223 transitions. Second operand 5 states. [2020-09-25 12:25:58,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:58,908 INFO L93 Difference]: Finished difference Result 2249 states and 2932 transitions. [2020-09-25 12:25:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:58,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 12:25:58,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:58,917 INFO L225 Difference]: With dead ends: 2249 [2020-09-25 12:25:58,917 INFO L226 Difference]: Without dead ends: 1302 [2020-09-25 12:25:58,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:25:58,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2020-09-25 12:25:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1273. [2020-09-25 12:25:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1273 states. [2020-09-25 12:25:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1570 transitions. [2020-09-25 12:25:58,980 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1570 transitions. Word has length 153 [2020-09-25 12:25:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:58,989 INFO L479 AbstractCegarLoop]: Abstraction has 1273 states and 1570 transitions. [2020-09-25 12:25:58,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1570 transitions. [2020-09-25 12:25:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:25:58,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:58,996 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:25:58,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:58,996 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1226984387, now seen corresponding path program 1 times [2020-09-25 12:25:58,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:58,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27498943] [2020-09-25 12:25:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:04,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:26:04,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:26:04,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:04,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:04,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:26:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 12:26:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:26:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:04,478 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-09-25 12:26:04,603 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-09-25 12:26:04,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:04,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:04,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:04,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:04,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:26:04,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:04,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:04,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:26:04,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:26:04,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:04,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:04,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:26:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:05,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:26:05,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:05,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:26:05,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:05,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:26:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:26:05,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:26:05,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27498943] [2020-09-25 12:26:05,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:05,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:26:05,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844467264] [2020-09-25 12:26:05,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:26:05,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:05,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:26:05,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:26:05,163 INFO L87 Difference]: Start difference. First operand 1273 states and 1570 transitions. Second operand 13 states. [2020-09-25 12:26:06,035 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 12:26:07,233 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-25 12:26:07,625 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 12:26:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:09,754 INFO L93 Difference]: Finished difference Result 3342 states and 4283 transitions. [2020-09-25 12:26:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 12:26:09,758 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 166 [2020-09-25 12:26:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:09,771 INFO L225 Difference]: With dead ends: 3342 [2020-09-25 12:26:09,771 INFO L226 Difference]: Without dead ends: 1856 [2020-09-25 12:26:09,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:26:09,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2020-09-25 12:26:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1834. [2020-09-25 12:26:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1834 states. [2020-09-25 12:26:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2171 transitions. [2020-09-25 12:26:09,840 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2171 transitions. Word has length 166 [2020-09-25 12:26:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:09,840 INFO L479 AbstractCegarLoop]: Abstraction has 1834 states and 2171 transitions. [2020-09-25 12:26:09,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:26:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2171 transitions. [2020-09-25 12:26:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:26:09,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:09,847 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:09,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:09,848 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:09,848 INFO L82 PathProgramCache]: Analyzing trace with hash 793940622, now seen corresponding path program 1 times [2020-09-25 12:26:09,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:09,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312328125] [2020-09-25 12:26:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:10,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:10,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:14,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:14,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 12:26:14,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:26:14,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:14,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 12:26:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:26:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:26:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:15,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:15,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:15,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:15,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:26:15,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:15,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:15,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:15,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:15,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:15,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:26:15,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:26:15,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:15,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:26:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:15,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312328125] [2020-09-25 12:26:15,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:15,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:15,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885611281] [2020-09-25 12:26:15,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:15,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:15,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:15,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:15,134 INFO L87 Difference]: Start difference. First operand 1834 states and 2171 transitions. Second operand 5 states. [2020-09-25 12:26:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:16,740 INFO L93 Difference]: Finished difference Result 4424 states and 5439 transitions. [2020-09-25 12:26:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:16,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 12:26:16,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:16,755 INFO L225 Difference]: With dead ends: 4424 [2020-09-25 12:26:16,755 INFO L226 Difference]: Without dead ends: 2612 [2020-09-25 12:26:16,762 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 12:26:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2020-09-25 12:26:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2590. [2020-09-25 12:26:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2590 states. [2020-09-25 12:26:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 3119 transitions. [2020-09-25 12:26:16,834 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 3119 transitions. Word has length 166 [2020-09-25 12:26:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:16,835 INFO L479 AbstractCegarLoop]: Abstraction has 2590 states and 3119 transitions. [2020-09-25 12:26:16,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 3119 transitions. [2020-09-25 12:26:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 12:26:16,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:16,844 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, 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] [2020-09-25 12:26:16,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:16,845 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:16,845 INFO L82 PathProgramCache]: Analyzing trace with hash 992970865, now seen corresponding path program 1 times [2020-09-25 12:26:16,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:16,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583572714] [2020-09-25 12:26:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:16,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 12:26:21,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:26:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:26:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 12:26:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0