/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:55,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:55,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:55,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:55,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:55,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:55,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:55,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:55,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:55,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:55,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:55,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:55,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:55,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:55,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:55,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:55,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:55,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:55,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:55,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:55,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:55,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:55,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:55,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:55,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:55,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:55,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:55,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:55,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:55,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:55,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:55,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:55,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:55,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:55,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:55,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:55,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:55,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:55,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:55,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:55,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:55,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:50:55,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:55,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:55,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:55,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:55,960 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:55,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:55,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:55,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:55,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:55,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:55,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:55,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:55,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:55,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:55,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:55,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:55,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:55,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:55,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:55,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:55,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:55,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:55,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:55,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:55,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:55,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:55,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:55,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:55,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:55,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:50:56,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:56,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:56,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:56,489 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:56,489 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:56,490 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-25 07:50:56,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81a6b8040/4907a62b64184b5a8701ed6ed48f54ca/FLAG8c8110423 [2020-09-25 07:50:57,268 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:57,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-25 07:50:57,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81a6b8040/4907a62b64184b5a8701ed6ed48f54ca/FLAG8c8110423 [2020-09-25 07:50:57,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81a6b8040/4907a62b64184b5a8701ed6ed48f54ca [2020-09-25 07:50:57,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:57,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:57,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:57,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:57,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:57,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:57" (1/1) ... [2020-09-25 07:50:57,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4757cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:57, skipping insertion in model container [2020-09-25 07:50:57,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:57" (1/1) ... [2020-09-25 07:50:57,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:57,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:58,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:58,258 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:58,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:58,373 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:58,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58 WrapperNode [2020-09-25 07:50:58,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:58,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:58,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:58,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:58,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:58,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:58,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:58,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:58,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:58,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:50:58,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:50:58,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:50:58,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:50:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:50:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:50:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:50:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:50:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:50:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:50:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:50:59,898 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:50:59,898 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:50:59,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:59 BoogieIcfgContainer [2020-09-25 07:50:59,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:50:59,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:50:59,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:50:59,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:50:59,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:57" (1/3) ... [2020-09-25 07:50:59,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f42e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:59, skipping insertion in model container [2020-09-25 07:50:59,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58" (2/3) ... [2020-09-25 07:50:59,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f42e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:59, skipping insertion in model container [2020-09-25 07:50:59,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:59" (3/3) ... [2020-09-25 07:50:59,925 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-09-25 07:50:59,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:50:59,949 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:50:59,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:00,005 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:00,006 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:00,006 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:00,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:00,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:00,006 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:00,006 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:00,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 07:51:00,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:00,068 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] [2020-09-25 07:51:00,069 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:00,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1257233759, now seen corresponding path program 1 times [2020-09-25 07:51:00,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:00,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283324542] [2020-09-25 07:51:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:05,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 07:51:05,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:51:05,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:51:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:05,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:51:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 07:51:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:51:05,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:05,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:05,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:51:05,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:05,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:51:05,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:05,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283324542] [2020-09-25 07:51:05,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:05,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:51:05,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081898230] [2020-09-25 07:51:05,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:51:05,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:05,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:51:05,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:51:05,757 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:51:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:08,295 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 07:51:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:51:08,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-25 07:51:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:08,321 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 07:51:08,321 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 07:51:08,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 07:51:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 07:51:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:51:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 07:51:08,436 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 132 [2020-09-25 07:51:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:08,437 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 07:51:08,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:51:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 07:51:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 07:51:08,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:08,445 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:51:08,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:08,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:08,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1159952749, now seen corresponding path program 1 times [2020-09-25 07:51:08,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:08,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107614078] [2020-09-25 07:51:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 07:51:13,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:51:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 07:51:13,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:13,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:51:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:51:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:13,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:13,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:13,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 07:51:13,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:13,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:13,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:13,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:13,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:51:13,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 07:51:13,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:13,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:51:13,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:13,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107614078] [2020-09-25 07:51:13,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:13,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:51:13,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240534370] [2020-09-25 07:51:13,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:51:13,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:13,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:51:13,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:51:13,827 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 8 states. [2020-09-25 07:51:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:16,944 INFO L93 Difference]: Finished difference Result 1914 states and 2461 transitions. [2020-09-25 07:51:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:51:16,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-09-25 07:51:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:16,954 INFO L225 Difference]: With dead ends: 1914 [2020-09-25 07:51:16,954 INFO L226 Difference]: Without dead ends: 1335 [2020-09-25 07:51:16,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:51:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-09-25 07:51:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1240. [2020-09-25 07:51:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-25 07:51:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1568 transitions. [2020-09-25 07:51:17,040 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1568 transitions. Word has length 154 [2020-09-25 07:51:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:17,040 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1568 transitions. [2020-09-25 07:51:17,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:51:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1568 transitions. [2020-09-25 07:51:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 07:51:17,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:17,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:17,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:51:17,049 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1406452310, now seen corresponding path program 1 times [2020-09-25 07:51:17,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:17,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921469281] [2020-09-25 07:51:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 07:51:22,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:51:22,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:51:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:51:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:22,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:51:22,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:22,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:51:22,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:51:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 07:51:22,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 07:51:22,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:22,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:22,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:51:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:22,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921469281] [2020-09-25 07:51:22,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:22,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:22,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586618570] [2020-09-25 07:51:22,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:22,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:22,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:22,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:22,701 INFO L87 Difference]: Start difference. First operand 1240 states and 1568 transitions. Second operand 7 states. [2020-09-25 07:51:26,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:26,113 INFO L93 Difference]: Finished difference Result 2935 states and 3857 transitions. [2020-09-25 07:51:26,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:51:26,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-09-25 07:51:26,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:26,134 INFO L225 Difference]: With dead ends: 2935 [2020-09-25 07:51:26,134 INFO L226 Difference]: Without dead ends: 1719 [2020-09-25 07:51:26,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:51:26,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-09-25 07:51:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1627. [2020-09-25 07:51:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-09-25 07:51:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2034 transitions. [2020-09-25 07:51:26,230 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2034 transitions. Word has length 186 [2020-09-25 07:51:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:26,232 INFO L479 AbstractCegarLoop]: Abstraction has 1627 states and 2034 transitions. [2020-09-25 07:51:26,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2034 transitions. [2020-09-25 07:51:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 07:51:26,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:26,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:26,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:26,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1220889089, now seen corresponding path program 1 times [2020-09-25 07:51:26,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:26,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939143261] [2020-09-25 07:51:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:31,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 07:51:31,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:31,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:51:31,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:31,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 07:51:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:51:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:31,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:31,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:31,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:31,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:51:31,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:31,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:31,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:31,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:31,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:31,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:51:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:51:31,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:31,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:51:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 07:51:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:31,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:31,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 07:51:31,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:31,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 07:51:31,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:31,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:31,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:31,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:31,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:51:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:31,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939143261] [2020-09-25 07:51:31,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:31,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:31,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224813550] [2020-09-25 07:51:31,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:31,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:31,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:31,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:31,650 INFO L87 Difference]: Start difference. First operand 1627 states and 2034 transitions. Second operand 7 states. [2020-09-25 07:51:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:33,635 INFO L93 Difference]: Finished difference Result 3170 states and 4018 transitions. [2020-09-25 07:51:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:51:33,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-09-25 07:51:33,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:33,648 INFO L225 Difference]: With dead ends: 3170 [2020-09-25 07:51:33,648 INFO L226 Difference]: Without dead ends: 1797 [2020-09-25 07:51:33,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:51:33,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-09-25 07:51:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1774. [2020-09-25 07:51:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1774 states. [2020-09-25 07:51:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2239 transitions. [2020-09-25 07:51:33,727 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2239 transitions. Word has length 191 [2020-09-25 07:51:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:33,729 INFO L479 AbstractCegarLoop]: Abstraction has 1774 states and 2239 transitions. [2020-09-25 07:51:33,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2239 transitions. [2020-09-25 07:51:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 07:51:33,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:33,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:33,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:51:33,742 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:33,742 INFO L82 PathProgramCache]: Analyzing trace with hash -269597623, now seen corresponding path program 1 times [2020-09-25 07:51:33,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:33,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211260802] [2020-09-25 07:51:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:33,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 07:51:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:51:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:51:38,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:51:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 07:51:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 07:51:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:38,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:38,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:38,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:51:38,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:38,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:38,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:39,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:51:39,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:39,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 07:51:39,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:39,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:51:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:51:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:51:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 07:51:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:51:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:39,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:51:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:39,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211260802] [2020-09-25 07:51:39,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:39,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:51:39,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646792094] [2020-09-25 07:51:39,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:51:39,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:51:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:51:39,247 INFO L87 Difference]: Start difference. First operand 1774 states and 2239 transitions. Second operand 8 states. [2020-09-25 07:51:39,930 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66