/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=0.2 --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:15:15,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:15:15,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:15:15,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:15:15,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:15:15,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:15:15,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:15:15,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:15:15,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:15:15,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:15:15,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:15:15,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:15:15,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:15:15,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:15:15,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:15:15,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:15:15,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:15:15,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:15:15,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:15:15,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:15:15,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:15:15,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:15:15,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:15:15,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:15:15,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:15:15,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:15:15,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:15:15,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:15:15,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:15:15,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:15:15,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:15:15,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:15:15,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:15:15,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:15:15,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:15:15,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:15:15,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:15:15,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:15:15,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:15:15,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:15:15,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:15:15,920 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 11:15:15,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:15:15,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:15:15,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:15:15,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:15:15,984 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:15:15,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:15:15,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:15:15,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:15:15,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:15:15,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:15:15,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:15:15,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:15:15,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:15:15,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:15:15,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:15:15,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:15:15,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:15:15,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:15:15,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:15:15,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:15:15,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:15:15,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:15:15,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:15:15,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:15:15,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:15:15,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:15:15,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:15:15,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:15:15,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:15:15,992 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:15:16,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:15:16,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:15:16,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:15:16,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:15:16,481 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:15:16,482 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 11:15:16,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba7f6597/82b347cda1da4b329abb35196971068a/FLAG7e2c4b196 [2020-09-25 11:15:17,222 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:15:17,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 11:15:17,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba7f6597/82b347cda1da4b329abb35196971068a/FLAG7e2c4b196 [2020-09-25 11:15:17,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba7f6597/82b347cda1da4b329abb35196971068a [2020-09-25 11:15:17,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:15:17,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:15:17,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:17,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:15:17,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:15:17,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:17" (1/1) ... [2020-09-25 11:15:17,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:17, skipping insertion in model container [2020-09-25 11:15:17,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:17" (1/1) ... [2020-09-25 11:15:17,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:15:17,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:15:18,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:18,139 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:15:18,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:18,264 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:15:18,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18 WrapperNode [2020-09-25 11:15:18,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:18,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:15:18,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:15:18,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:15:18,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:15:18,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:15:18,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:15:18,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:15:18,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (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 11:15:18,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:15:18,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:15:18,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:15:18,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:15:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:15:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:15:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:15:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:15:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:15:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:15:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:15:19,841 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:15:19,842 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:15:19,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:19 BoogieIcfgContainer [2020-09-25 11:15:19,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:15:19,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:15:19,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:15:19,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:15:19,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:15:17" (1/3) ... [2020-09-25 11:15:19,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787ebca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:19, skipping insertion in model container [2020-09-25 11:15:19,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18" (2/3) ... [2020-09-25 11:15:19,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787ebca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:19, skipping insertion in model container [2020-09-25 11:15:19,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:19" (3/3) ... [2020-09-25 11:15:19,863 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-09-25 11:15:19,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:15:19,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:15:19,912 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:15:19,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:15:19,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:15:19,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:15:19,949 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:15:19,949 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:15:19,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:15:19,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:15:19,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:15:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:15:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 11:15:20,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:20,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:20,008 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:20,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1547939106, now seen corresponding path program 1 times [2020-09-25 11:15:20,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:20,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793355088] [2020-09-25 11:15:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:21,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:23,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:25,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:25,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 11:15:25,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:15:25,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:15:25,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:25,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:15:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:15:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:15:25,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:25,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:25,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:25,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:15:25,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:25,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:15:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:25,687 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 11:15:25,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793355088] [2020-09-25 11:15:25,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:15:25,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:15:25,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604784050] [2020-09-25 11:15:25,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:15:25,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:25,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:15:25,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:15:25,723 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:15:27,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:27,668 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 11:15:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:15:27,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 11:15:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:27,697 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 11:15:27,698 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 11:15:27,710 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 11:15:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 11:15:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 11:15:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 11:15:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 11:15:27,814 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 155 [2020-09-25 11:15:27,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:27,815 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 11:15:27,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:15:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 11:15:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 11:15:27,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:27,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:27,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:15:27,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:27,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:27,825 INFO L82 PathProgramCache]: Analyzing trace with hash 372852103, now seen corresponding path program 1 times [2020-09-25 11:15:27,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:27,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690583979] [2020-09-25 11:15:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:27,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:32,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:32,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 11:15:32,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:15:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 11:15:32,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:32,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 11:15:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 11:15:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:33,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:33,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:33,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:15:33,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:33,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:33,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:15:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:33,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:33,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:15:33,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:15:33,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:33,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:15:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:33,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690583979] [2020-09-25 11:15:33,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:33,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:33,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250591156] [2020-09-25 11:15:33,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:33,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:33,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:33,301 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 5 states. [2020-09-25 11:15:35,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:35,659 INFO L93 Difference]: Finished difference Result 1680 states and 2139 transitions. [2020-09-25 11:15:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:35,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 11:15:35,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:35,668 INFO L225 Difference]: With dead ends: 1680 [2020-09-25 11:15:35,668 INFO L226 Difference]: Without dead ends: 1089 [2020-09-25 11:15:35,671 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 11:15:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-09-25 11:15:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 968. [2020-09-25 11:15:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-25 11:15:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1232 transitions. [2020-09-25 11:15:35,722 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1232 transitions. Word has length 189 [2020-09-25 11:15:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:35,722 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1232 transitions. [2020-09-25 11:15:35,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1232 transitions. [2020-09-25 11:15:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 11:15:35,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:35,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:35,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:35,729 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:35,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:35,730 INFO L82 PathProgramCache]: Analyzing trace with hash 835170522, now seen corresponding path program 1 times [2020-09-25 11:15:35,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:35,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726856215] [2020-09-25 11:15:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:40,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 11:15:40,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:15:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:15:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:40,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 11:15:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 11:15:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:40,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:40,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:40,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:40,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:15:40,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:40,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:40,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:40,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:40,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:41,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:41,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:15:41,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:15:41,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:41,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 11:15:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:41,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726856215] [2020-09-25 11:15:41,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:41,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:41,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579478252] [2020-09-25 11:15:41,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:41,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:41,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:41,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:41,099 INFO L87 Difference]: Start difference. First operand 968 states and 1232 transitions. Second operand 5 states. [2020-09-25 11:15:43,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:43,179 INFO L93 Difference]: Finished difference Result 2423 states and 3188 transitions. [2020-09-25 11:15:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:43,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 11:15:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:43,205 INFO L225 Difference]: With dead ends: 2423 [2020-09-25 11:15:43,206 INFO L226 Difference]: Without dead ends: 1477 [2020-09-25 11:15:43,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 11:15:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-09-25 11:15:43,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1426. [2020-09-25 11:15:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-09-25 11:15:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1751 transitions. [2020-09-25 11:15:43,280 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1751 transitions. Word has length 193 [2020-09-25 11:15:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:43,282 INFO L479 AbstractCegarLoop]: Abstraction has 1426 states and 1751 transitions. [2020-09-25 11:15:43,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1751 transitions. [2020-09-25 11:15:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 11:15:43,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:43,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:43,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:15:43,294 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:43,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1504338062, now seen corresponding path program 1 times [2020-09-25 11:15:43,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:43,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009465380] [2020-09-25 11:15:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:43,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:48,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 11:15:48,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:15:48,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:15:48,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:48,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:15:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 11:15:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:15:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:48,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:48,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:15:48,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:48,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:48,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:48,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:15:48,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:15:48,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:48,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:15:48,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:15:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:48,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:15:48,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 11:15:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:48,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:15:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:15:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 11:15:49,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009465380] [2020-09-25 11:15:49,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:49,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:15:49,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219312731] [2020-09-25 11:15:49,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:15:49,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:49,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:15:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:15:49,224 INFO L87 Difference]: Start difference. First operand 1426 states and 1751 transitions. Second operand 8 states. [2020-09-25 11:15:52,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:52,306 INFO L93 Difference]: Finished difference Result 3242 states and 4123 transitions. [2020-09-25 11:15:52,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:15:52,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 11:15:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:52,321 INFO L225 Difference]: With dead ends: 3242 [2020-09-25 11:15:52,321 INFO L226 Difference]: Without dead ends: 1740 [2020-09-25 11:15:52,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:15:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2020-09-25 11:15:52,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1722. [2020-09-25 11:15:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1722 states. [2020-09-25 11:15:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2075 transitions. [2020-09-25 11:15:52,391 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2075 transitions. Word has length 212 [2020-09-25 11:15:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:52,392 INFO L479 AbstractCegarLoop]: Abstraction has 1722 states and 2075 transitions. [2020-09-25 11:15:52,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:15:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2075 transitions. [2020-09-25 11:15:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 11:15:52,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:52,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:52,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:15:52,401 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:52,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1577293473, now seen corresponding path program 1 times [2020-09-25 11:15:52,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:52,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080442779] [2020-09-25 11:15:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:52,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 11:15:57,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:15:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:15:57,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:15:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:15:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-25 11:15:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:57,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:57,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:15:57,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:15:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:57,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:15:57,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 11:15:57,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:15:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:15:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:57,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:15:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:15:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 11:15:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:58,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:15:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:15:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:15:58,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080442779] [2020-09-25 11:15:58,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:58,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:15:58,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527698814] [2020-09-25 11:15:58,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:15:58,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:15:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:15:58,442 INFO L87 Difference]: Start difference. First operand 1722 states and 2075 transitions. Second operand 13 states. [2020-09-25 11:16:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:02,817 INFO L93 Difference]: Finished difference Result 4817 states and 6233 transitions. [2020-09-25 11:16:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 11:16:02,818 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 219 [2020-09-25 11:16:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:02,836 INFO L225 Difference]: With dead ends: 4817 [2020-09-25 11:16:02,836 INFO L226 Difference]: Without dead ends: 2999 [2020-09-25 11:16:02,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2020-09-25 11:16:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-09-25 11:16:02,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2993. [2020-09-25 11:16:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2993 states. [2020-09-25 11:16:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 3657 transitions. [2020-09-25 11:16:02,956 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 3657 transitions. Word has length 219 [2020-09-25 11:16:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:02,957 INFO L479 AbstractCegarLoop]: Abstraction has 2993 states and 3657 transitions. [2020-09-25 11:16:02,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:16:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 3657 transitions. [2020-09-25 11:16:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 11:16:02,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:02,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:16:02,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:16:02,973 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:02,974 INFO L82 PathProgramCache]: Analyzing trace with hash -248213104, now seen corresponding path program 1 times [2020-09-25 11:16:02,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:02,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426294677] [2020-09-25 11:16:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking...