/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=0.6 --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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:35,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:35,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:35,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:35,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:35,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:35,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:35,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:35,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:35,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:35,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:35,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:35,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:35,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:35,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:35,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:35,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:35,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:35,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:35,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:35,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:35,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:35,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:35,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:35,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:35,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:35,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:35,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:35,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:35,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:35,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:35,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:35,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:35,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:35,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:35,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:35,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:35,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:35,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:35,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:35,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:35,371 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 06:43:35,422 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:35,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:35,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:35,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:35,424 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:35,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:35,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:35,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:35,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:35,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:35,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:35,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:35,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:35,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:35,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:35,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:35,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:35,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:35,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:35,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:35,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:35,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:35,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:35,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:35,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:35,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:35,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:35,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:35,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:35,429 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:43:35,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:35,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:35,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:35,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:35,968 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:35,970 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 06:43:36,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64258c5f7/8cb7fb3dfc454e8ca81ac54effa9b036/FLAG632208499 [2020-09-25 06:43:36,715 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:36,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 06:43:36,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64258c5f7/8cb7fb3dfc454e8ca81ac54effa9b036/FLAG632208499 [2020-09-25 06:43:36,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64258c5f7/8cb7fb3dfc454e8ca81ac54effa9b036 [2020-09-25 06:43:36,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:36,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:36,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:36,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:36,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:36,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66409f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36, skipping insertion in model container [2020-09-25 06:43:36,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:37,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:37,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:37,616 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:37,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:37,874 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:37,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37 WrapperNode [2020-09-25 06:43:37,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:37,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:37,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:37,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:37,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (1/1) ... [2020-09-25 06:43:37,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (1/1) ... [2020-09-25 06:43:37,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (1/1) ... [2020-09-25 06:43:37,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (1/1) ... [2020-09-25 06:43:37,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (1/1) ... [2020-09-25 06:43:37,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (1/1) ... [2020-09-25 06:43:37,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (1/1) ... [2020-09-25 06:43:37,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:37,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:37,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:38,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:38,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (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 06:43:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:39,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:39,450 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:39,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:39 BoogieIcfgContainer [2020-09-25 06:43:39,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:39,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:39,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:39,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:39,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:36" (1/3) ... [2020-09-25 06:43:39,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333f2b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:39, skipping insertion in model container [2020-09-25 06:43:39,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:37" (2/3) ... [2020-09-25 06:43:39,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333f2b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:39, skipping insertion in model container [2020-09-25 06:43:39,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:39" (3/3) ... [2020-09-25 06:43:39,480 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2020-09-25 06:43:39,493 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:39,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:39,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:39,577 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:39,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:39,578 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:39,578 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:39,578 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:39,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:39,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:39,579 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:43:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 06:43:39,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:39,646 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] [2020-09-25 06:43:39,646 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1323495626, now seen corresponding path program 1 times [2020-09-25 06:43:39,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:39,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268021424] [2020-09-25 06:43:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:44,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:44,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 06:43:44,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:44,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 06:43:44,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:44,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:43:44,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:43:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:45,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:45,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:45,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:45,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:43:45,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:45,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:45,330 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 06:43:45,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268021424] [2020-09-25 06:43:45,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:45,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:45,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311532357] [2020-09-25 06:43:45,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:45,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:45,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:45,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:45,366 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:43:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:47,684 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 06:43:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:47,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 06:43:47,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:47,718 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 06:43:47,718 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 06:43:47,730 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 06:43:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 06:43:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 06:43:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 06:43:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 06:43:47,850 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 141 [2020-09-25 06:43:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:47,851 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 06:43:47,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 06:43:47,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 06:43:47,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:47,867 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:47,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:47,871 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:47,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:47,872 INFO L82 PathProgramCache]: Analyzing trace with hash -427811082, now seen corresponding path program 1 times [2020-09-25 06:43:47,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:47,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303595836] [2020-09-25 06:43:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:52,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 06:43:52,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:43:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:43:52,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:52,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:43:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 06:43:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:43:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:53,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:53,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:53,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:43:53,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:53,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:53,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:43:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:43:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:53,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:43:53,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:43:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:53,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:43:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:53,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303595836] [2020-09-25 06:43:53,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:53,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:43:53,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51238648] [2020-09-25 06:43:53,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:43:53,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:53,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:43:53,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:53,335 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 06:43:55,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:55,316 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 06:43:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:55,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-09-25 06:43:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:55,325 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 06:43:55,325 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 06:43:55,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 06:43:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 06:43:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 06:43:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 06:43:55,405 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 159 [2020-09-25 06:43:55,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:55,406 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 06:43:55,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:43:55,406 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 06:43:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 06:43:55,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:55,412 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] [2020-09-25 06:43:55,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:55,412 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:55,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1927343599, now seen corresponding path program 1 times [2020-09-25 06:43:55,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:55,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594906044] [2020-09-25 06:43:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:55,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:59,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:00,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 06:44:00,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:44:00,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:00,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 06:44:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 06:44:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:44:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:00,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:00,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:44:00,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:44:00,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:00,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:44:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:00,704 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 06:44:00,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594906044] [2020-09-25 06:44:00,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:00,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:00,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833053954] [2020-09-25 06:44:00,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:00,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:00,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:00,708 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 06:44:02,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:02,979 INFO L93 Difference]: Finished difference Result 2239 states and 2968 transitions. [2020-09-25 06:44:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:02,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 06:44:02,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:02,989 INFO L225 Difference]: With dead ends: 2239 [2020-09-25 06:44:02,989 INFO L226 Difference]: Without dead ends: 1380 [2020-09-25 06:44:02,993 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 06:44:02,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-09-25 06:44:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1341. [2020-09-25 06:44:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-25 06:44:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1640 transitions. [2020-09-25 06:44:03,038 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1640 transitions. Word has length 175 [2020-09-25 06:44:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:03,039 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1640 transitions. [2020-09-25 06:44:03,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1640 transitions. [2020-09-25 06:44:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 06:44:03,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:03,045 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] [2020-09-25 06:44:03,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:03,046 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:03,046 INFO L82 PathProgramCache]: Analyzing trace with hash 482825858, now seen corresponding path program 1 times [2020-09-25 06:44:03,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:03,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024534505] [2020-09-25 06:44:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:08,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 06:44:08,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:44:08,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:08,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:44:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 06:44:08,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:08,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:08,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:08,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:08,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:08,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:08,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:08,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:08,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:08,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:44:08,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:08,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:44:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:08,388 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 06:44:08,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024534505] [2020-09-25 06:44:08,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:08,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:08,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558551825] [2020-09-25 06:44:08,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:08,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:08,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:08,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:08,391 INFO L87 Difference]: Start difference. First operand 1341 states and 1640 transitions. Second operand 5 states. [2020-09-25 06:44:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:10,470 INFO L93 Difference]: Finished difference Result 3580 states and 4555 transitions. [2020-09-25 06:44:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:10,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 06:44:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:10,485 INFO L225 Difference]: With dead ends: 3580 [2020-09-25 06:44:10,486 INFO L226 Difference]: Without dead ends: 2261 [2020-09-25 06:44:10,492 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 06:44:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-09-25 06:44:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1970. [2020-09-25 06:44:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2020-09-25 06:44:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2486 transitions. [2020-09-25 06:44:10,561 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2486 transitions. Word has length 179 [2020-09-25 06:44:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:10,561 INFO L479 AbstractCegarLoop]: Abstraction has 1970 states and 2486 transitions. [2020-09-25 06:44:10,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2486 transitions. [2020-09-25 06:44:10,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 06:44:10,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:10,572 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, 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] [2020-09-25 06:44:10,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:10,572 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:10,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1193444011, now seen corresponding path program 1 times [2020-09-25 06:44:10,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:10,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885820598] [2020-09-25 06:44:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:10,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:15,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 06:44:15,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:15,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 06:44:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:15,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:44:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 06:44:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:15,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:15,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:15,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:15,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:44:15,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:15,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:44:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:15,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:44:15,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:44:15,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:15,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:44:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 06:44:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:16,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:16,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:44:16,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:16,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 06:44:16,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:16,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:44:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:44:16,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885820598] [2020-09-25 06:44:16,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:16,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:44:16,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631870352] [2020-09-25 06:44:16,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:44:16,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:16,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:44:16,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:16,204 INFO L87 Difference]: Start difference. First operand 1970 states and 2486 transitions. Second operand 6 states. [2020-09-25 06:44:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:18,335 INFO L93 Difference]: Finished difference Result 5291 states and 7151 transitions. [2020-09-25 06:44:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:44:18,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-09-25 06:44:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:18,358 INFO L225 Difference]: With dead ends: 5291 [2020-09-25 06:44:18,358 INFO L226 Difference]: Without dead ends: 3343 [2020-09-25 06:44:18,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:18,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2020-09-25 06:44:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3053. [2020-09-25 06:44:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2020-09-25 06:44:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 3808 transitions. [2020-09-25 06:44:18,490 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 3808 transitions. Word has length 250 [2020-09-25 06:44:18,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:18,490 INFO L479 AbstractCegarLoop]: Abstraction has 3053 states and 3808 transitions. [2020-09-25 06:44:18,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:44:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 3808 transitions. [2020-09-25 06:44:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-25 06:44:18,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:18,508 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 06:44:18,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:18,509 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:18,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1156040154, now seen corresponding path program 1 times [2020-09-25 06:44:18,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:18,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867185136] [2020-09-25 06:44:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:18,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:23,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-09-25 06:44:23,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:44:23,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:23,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:44:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 06:44:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:23,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:23,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:44:23,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:23,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:23,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:23,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:23,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:23,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:44:23,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:23,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:23,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:23,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:44:23,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:44:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:23,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:23,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 06:44:23,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:23,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:44:23,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:23,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 06:44:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:44:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 06:44:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:23,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:44:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 158 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 06:44:24,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867185136] [2020-09-25 06:44:24,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:24,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:24,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671386514] [2020-09-25 06:44:24,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:24,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:24,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:24,084 INFO L87 Difference]: Start difference. First operand 3053 states and 3808 transitions. Second operand 7 states.