/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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:27,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:27,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:27,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:27,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:27,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:27,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:27,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:27,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:27,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:27,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:27,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:27,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:27,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:27,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:27,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:27,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:27,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:27,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:27,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:27,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:27,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:27,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:27,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:27,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:27,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:27,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:27,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:27,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:27,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:27,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:27,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:27,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:27,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:27,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:27,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:27,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:27,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:27,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:27,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:27,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:27,472 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 07:52:27,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:27,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:27,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:27,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:27,501 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:27,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:27,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:27,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:27,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:27,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:27,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:27,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:27,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:27,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:27,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:27,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:27,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:27,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:27,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:27,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:27,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:27,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:27,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:27,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:27,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:27,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:27,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:27,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:27,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:27,506 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 07:52:27,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:28,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:28,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:28,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:28,019 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:28,020 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 07:52:28,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f8fc425c/8dbeb328c9d541a08f520690a76a52ae/FLAG15a1b7108 [2020-09-25 07:52:28,764 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:28,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 07:52:28,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f8fc425c/8dbeb328c9d541a08f520690a76a52ae/FLAG15a1b7108 [2020-09-25 07:52:29,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f8fc425c/8dbeb328c9d541a08f520690a76a52ae [2020-09-25 07:52:29,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:29,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:29,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:29,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:29,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:29,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a565f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29, skipping insertion in model container [2020-09-25 07:52:29,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:29,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:29,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:29,721 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:29,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:29,835 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:29,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29 WrapperNode [2020-09-25 07:52:29,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:29,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:29,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:29,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:29,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (1/1) ... [2020-09-25 07:52:29,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:29,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:29,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:29,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:29,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (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 07:52:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:30,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:30,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:31,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:31,385 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:31,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:31 BoogieIcfgContainer [2020-09-25 07:52:31,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:31,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:31,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:31,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:31,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:29" (1/3) ... [2020-09-25 07:52:31,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a99ae90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:31, skipping insertion in model container [2020-09-25 07:52:31,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:29" (2/3) ... [2020-09-25 07:52:31,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a99ae90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:31, skipping insertion in model container [2020-09-25 07:52:31,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:31" (3/3) ... [2020-09-25 07:52:31,405 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-25 07:52:31,417 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:31,428 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:31,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:31,490 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:31,490 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:31,490 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:31,490 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:31,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:31,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:31,491 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:31,491 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:52:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 07:52:31,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:31,548 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] [2020-09-25 07:52:31,549 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-25 07:52:31,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:31,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154867803] [2020-09-25 07:52:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:31,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:36,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:36,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 07:52:36,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:52:36,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:36,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:52:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 07:52:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 07:52:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:37,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:37,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:52:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:37,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:37,165 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 07:52:37,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154867803] [2020-09-25 07:52:37,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:37,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:37,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618316679] [2020-09-25 07:52:37,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:37,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:37,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:37,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:37,202 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:52:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:39,476 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 07:52:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:39,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 07:52:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:39,504 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 07:52:39,504 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 07:52:39,520 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 07:52:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 07:52:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 07:52:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:52:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 07:52:39,650 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 127 [2020-09-25 07:52:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:39,652 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 07:52:39,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 07:52:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 07:52:39,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:39,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:39,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:39,666 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1111410035, now seen corresponding path program 1 times [2020-09-25 07:52:39,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:39,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221268079] [2020-09-25 07:52:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:39,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 07:52:44,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:52:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:52:44,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:44,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:52:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:52:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:44,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:52:44,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:44,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:44,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:44,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:44,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 07:52:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:44,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:45,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221268079] [2020-09-25 07:52:45,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:45,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:52:45,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983087582] [2020-09-25 07:52:45,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:45,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:45,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:45,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:45,019 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 07:52:47,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:47,449 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 07:52:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:52:47,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 07:52:47,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:47,461 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 07:52:47,461 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 07:52:47,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:52:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 07:52:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 07:52:47,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 07:52:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1108 transitions. [2020-09-25 07:52:47,526 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1108 transitions. Word has length 148 [2020-09-25 07:52:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:47,526 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1108 transitions. [2020-09-25 07:52:47,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1108 transitions. [2020-09-25 07:52:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 07:52:47,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:47,535 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] [2020-09-25 07:52:47,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:47,536 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:47,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-25 07:52:47,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:47,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116068609] [2020-09-25 07:52:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:47,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:52,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 07:52:52,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:52:52,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:52,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:52:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:52:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:52:52,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:52,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:52,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:52,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:52:52,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:52,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:52:52,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:52,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:52:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:52,817 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 07:52:52,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116068609] [2020-09-25 07:52:52,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:52,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:52:52,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937527766] [2020-09-25 07:52:52,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:52:52,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:52,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:52:52,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:52:52,821 INFO L87 Difference]: Start difference. First operand 901 states and 1108 transitions. Second operand 8 states. [2020-09-25 07:52:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:55,836 INFO L93 Difference]: Finished difference Result 2953 states and 3852 transitions. [2020-09-25 07:52:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:52:55,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 07:52:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:55,856 INFO L225 Difference]: With dead ends: 2953 [2020-09-25 07:52:55,857 INFO L226 Difference]: Without dead ends: 2076 [2020-09-25 07:52:55,863 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 07:52:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2020-09-25 07:52:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1981. [2020-09-25 07:52:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-09-25 07:52:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2508 transitions. [2020-09-25 07:52:55,974 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2508 transitions. Word has length 149 [2020-09-25 07:52:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:55,975 INFO L479 AbstractCegarLoop]: Abstraction has 1981 states and 2508 transitions. [2020-09-25 07:52:55,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:52:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2508 transitions. [2020-09-25 07:52:55,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 07:52:55,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:55,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 07:52:55,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:55,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2031815638, now seen corresponding path program 1 times [2020-09-25 07:52:55,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:55,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60744688] [2020-09-25 07:52:56,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:56,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:01,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:01,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 07:53:01,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:53:01,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:53:01,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:01,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:01,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:01,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 07:53:01,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:53:01,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:01,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:01,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:53:01,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:53:01,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:01,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:53:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:01,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:53:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:53:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:01,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:53:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 07:53:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:01,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:53:01,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 07:53:01,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:01,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:53:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:53:01,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60744688] [2020-09-25 07:53:01,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:01,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:53:01,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419926289] [2020-09-25 07:53:01,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:53:01,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:53:01,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:53:01,332 INFO L87 Difference]: Start difference. First operand 1981 states and 2508 transitions. Second operand 8 states. [2020-09-25 07:53:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:03,835 INFO L93 Difference]: Finished difference Result 5205 states and 6702 transitions. [2020-09-25 07:53:03,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:53:03,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 07:53:03,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:03,864 INFO L225 Difference]: With dead ends: 5205 [2020-09-25 07:53:03,864 INFO L226 Difference]: Without dead ends: 3248 [2020-09-25 07:53:03,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:53:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2020-09-25 07:53:03,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2563. [2020-09-25 07:53:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2563 states. [2020-09-25 07:53:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3287 transitions. [2020-09-25 07:53:03,977 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3287 transitions. Word has length 165 [2020-09-25 07:53:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:03,977 INFO L479 AbstractCegarLoop]: Abstraction has 2563 states and 3287 transitions. [2020-09-25 07:53:03,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:53:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3287 transitions. [2020-09-25 07:53:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 07:53:03,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:03,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:53:03,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:53:03,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:03,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:03,990 INFO L82 PathProgramCache]: Analyzing trace with hash -531650440, now seen corresponding path program 1 times [2020-09-25 07:53:03,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:03,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958057083] [2020-09-25 07:53:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:06,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:09,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 07:53:09,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:53:09,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:53:09,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:09,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:09,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:53:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:53:09,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:53:09,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:53:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:53:09,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:09,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:53:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:09,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:53:09,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:09,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:53:09,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:09,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:09,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:53:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:53:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:09,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:53:09,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:53:09,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:09,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:53:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:53:09,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958057083] [2020-09-25 07:53:09,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:09,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:09,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175147592] [2020-09-25 07:53:09,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:09,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:09,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:09,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:09,346 INFO L87 Difference]: Start difference. First operand 2563 states and 3287 transitions. Second operand 7 states. [2020-09-25 07:53:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:11,754 INFO L93 Difference]: Finished difference Result 5421 states and 7010 transitions. [2020-09-25 07:53:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:53:11,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 07:53:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:11,774 INFO L225 Difference]: With dead ends: 5421 [2020-09-25 07:53:11,775 INFO L226 Difference]: Without dead ends: 2882 [2020-09-25 07:53:11,785 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 07:53:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-09-25 07:53:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2706. [2020-09-25 07:53:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2020-09-25 07:53:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3445 transitions. [2020-09-25 07:53:11,872 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3445 transitions. Word has length 170 [2020-09-25 07:53:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:11,872 INFO L479 AbstractCegarLoop]: Abstraction has 2706 states and 3445 transitions. [2020-09-25 07:53:11,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:53:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3445 transitions. [2020-09-25 07:53:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 07:53:11,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:11,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:11,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:11,887 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:11,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:11,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2069482775, now seen corresponding path program 1 times [2020-09-25 07:53:11,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:11,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633741150] [2020-09-25 07:53:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:13,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking...