/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=LOWLEXORDER --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/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:35,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:35,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:35,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:35,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:35,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:35,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:35,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:35,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:35,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:35,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:35,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:35,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:35,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:35,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:35,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:35,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:35,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:35,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:35,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:35,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:35,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:35,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:35,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:35,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:35,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:35,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:35,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:35,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:35,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:35,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:35,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:35,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:35,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:35,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:35,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:35,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:35,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:35,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:35,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:35,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:35,414 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 [2020-09-24 21:45:35,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:35,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:35,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:35,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:35,442 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:35,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:35,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:35,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:35,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:35,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:35,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:35,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:35,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:35,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:35,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:35,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:35,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:35,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:35,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:35,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:35,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:35,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:35,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:35,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:35,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:35,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:35,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:35,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:35,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:35,453 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:45:35,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:35,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:35,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:35,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:35,981 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:35,983 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-24 21:45:36,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e231fb1/799f3d054d9e463e883112a6e92a3c2a/FLAGf57fac8f1 [2020-09-24 21:45:36,728 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:36,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-24 21:45:36,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e231fb1/799f3d054d9e463e883112a6e92a3c2a/FLAGf57fac8f1 [2020-09-24 21:45:36,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e231fb1/799f3d054d9e463e883112a6e92a3c2a [2020-09-24 21:45:36,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:37,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:37,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:37,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:37,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:37,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:36" (1/1) ... [2020-09-24 21:45:37,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37, skipping insertion in model container [2020-09-24 21:45:37,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:36" (1/1) ... [2020-09-24 21:45:37,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:37,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:37,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:37,594 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:37,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:37,826 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:37,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37 WrapperNode [2020-09-24 21:45:37,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:37,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:37,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:37,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:37,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (1/1) ... [2020-09-24 21:45:37,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (1/1) ... [2020-09-24 21:45:37,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (1/1) ... [2020-09-24 21:45:37,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (1/1) ... [2020-09-24 21:45:37,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (1/1) ... [2020-09-24 21:45:37,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (1/1) ... [2020-09-24 21:45:37,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (1/1) ... [2020-09-24 21:45:37,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:37,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:37,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:37,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:37,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (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 [2020-09-24 21:45:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:38,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:38,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:38,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:39,527 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:39,527 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:39,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:39 BoogieIcfgContainer [2020-09-24 21:45:39,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:39,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:39,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:39,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:39,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:36" (1/3) ... [2020-09-24 21:45:39,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:39, skipping insertion in model container [2020-09-24 21:45:39,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:37" (2/3) ... [2020-09-24 21:45:39,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:39, skipping insertion in model container [2020-09-24 21:45:39,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:39" (3/3) ... [2020-09-24 21:45:39,548 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-09-24 21:45:39,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:39,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:39,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:39,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:39,646 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:39,646 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:39,647 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:39,647 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:39,647 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:39,647 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:39,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:39,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:45:39,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:39,706 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] [2020-09-24 21:45:39,707 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:39,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:39,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1024488521, now seen corresponding path program 1 times [2020-09-24 21:45:39,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:39,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-24 21:45:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:40,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 21:45:40,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-09-24 21:45:40,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:40,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 21:45:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:45:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:41,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:41,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:41,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:45:41,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:41,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:41,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-24 21:45:41,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:41,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:45:41,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393996346] [2020-09-24 21:45:41,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:45:41,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:41,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:45:41,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:41,069 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:45:43,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:43,979 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-24 21:45:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:45:43,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-24 21:45:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:44,010 INFO L225 Difference]: With dead ends: 1352 [2020-09-24 21:45:44,011 INFO L226 Difference]: Without dead ends: 806 [2020-09-24 21:45:44,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-24 21:45:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-24 21:45:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-24 21:45:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-24 21:45:44,146 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 51 [2020-09-24 21:45:44,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:44,146 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-24 21:45:44,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:45:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-24 21:45:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 21:45:44,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:44,155 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, 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] [2020-09-24 21:45:44,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:44,156 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:44,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:44,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1838754330, now seen corresponding path program 1 times [2020-09-24 21:45:44,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:44,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107062329] [2020-09-24 21:45:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:46,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 21:45:46,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2680 [2020-09-24 21:45:46,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 21:45:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:46,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:47,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:47,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:45:47,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:47,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:47,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:47,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-24 21:45:47,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:47,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107062329] [2020-09-24 21:45:47,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:47,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:47,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581388622] [2020-09-24 21:45:47,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:47,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:47,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:47,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:47,712 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 9 states. [2020-09-24 21:45:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:50,715 INFO L93 Difference]: Finished difference Result 1785 states and 2276 transitions. [2020-09-24 21:45:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:50,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-09-24 21:45:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:50,734 INFO L225 Difference]: With dead ends: 1785 [2020-09-24 21:45:50,734 INFO L226 Difference]: Without dead ends: 1073 [2020-09-24 21:45:50,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:45:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2020-09-24 21:45:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 880. [2020-09-24 21:45:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-24 21:45:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1106 transitions. [2020-09-24 21:45:50,826 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1106 transitions. Word has length 134 [2020-09-24 21:45:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:50,837 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1106 transitions. [2020-09-24 21:45:50,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:50,837 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1106 transitions. [2020-09-24 21:45:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 21:45:50,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:50,852 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, 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] [2020-09-24 21:45:50,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:50,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash -81858370, now seen corresponding path program 1 times [2020-09-24 21:45:50,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:50,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789758761] [2020-09-24 21:45:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:50,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:53,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 21:45:53,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:45:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3028 [2020-09-24 21:45:53,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:45:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:54,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:54,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:54,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:54,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:45:54,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-24 21:45:54,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:45:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:54,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789758761] [2020-09-24 21:45:54,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:54,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:54,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449303373] [2020-09-24 21:45:54,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:54,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:54,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:54,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:54,717 INFO L87 Difference]: Start difference. First operand 880 states and 1106 transitions. Second operand 7 states. [2020-09-24 21:45:56,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:56,557 INFO L93 Difference]: Finished difference Result 1921 states and 2533 transitions. [2020-09-24 21:45:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:56,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-09-24 21:45:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:56,565 INFO L225 Difference]: With dead ends: 1921 [2020-09-24 21:45:56,566 INFO L226 Difference]: Without dead ends: 1206 [2020-09-24 21:45:56,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:45:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-24 21:45:56,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1200. [2020-09-24 21:45:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-09-24 21:45:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1540 transitions. [2020-09-24 21:45:56,610 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1540 transitions. Word has length 183 [2020-09-24 21:45:56,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:56,611 INFO L479 AbstractCegarLoop]: Abstraction has 1200 states and 1540 transitions. [2020-09-24 21:45:56,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1540 transitions. [2020-09-24 21:45:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 21:45:56,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:56,617 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:56,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:56,617 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:56,618 INFO L82 PathProgramCache]: Analyzing trace with hash -648003011, now seen corresponding path program 1 times [2020-09-24 21:45:56,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:56,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752191241] [2020-09-24 21:45:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:01,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-24 21:46:01,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 21:46:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:46:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:46:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:01,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:01,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:01,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 21:46:01,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:01,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:01,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:01,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-24 21:46:02,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:02,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:46:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:02,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:46:02,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-24 21:46:02,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:46:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 96 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:03,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752191241] [2020-09-24 21:46:03,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:03,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:46:03,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052461195] [2020-09-24 21:46:03,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:46:03,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:03,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:46:03,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:03,101 INFO L87 Difference]: Start difference. First operand 1200 states and 1540 transitions. Second operand 13 states. [2020-09-24 21:46:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:08,187 INFO L93 Difference]: Finished difference Result 3378 states and 4706 transitions. [2020-09-24 21:46:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:46:08,188 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 232 [2020-09-24 21:46:08,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:08,207 INFO L225 Difference]: With dead ends: 3378 [2020-09-24 21:46:08,207 INFO L226 Difference]: Without dead ends: 2300 [2020-09-24 21:46:08,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:46:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2020-09-24 21:46:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 1900. [2020-09-24 21:46:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1900 states. [2020-09-24 21:46:08,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2559 transitions. [2020-09-24 21:46:08,321 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2559 transitions. Word has length 232 [2020-09-24 21:46:08,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:08,321 INFO L479 AbstractCegarLoop]: Abstraction has 1900 states and 2559 transitions. [2020-09-24 21:46:08,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:46:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2559 transitions. [2020-09-24 21:46:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-24 21:46:08,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:08,326 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:08,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:08,327 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:08,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1167088697, now seen corresponding path program 1 times [2020-09-24 21:46:08,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:08,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27818778] [2020-09-24 21:46:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:13,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-24 21:46:13,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:46:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:46:13,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-09-24 21:46:13,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:13,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:13,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:13,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:13,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:13,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:13,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 21:46:13,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:13,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:13,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:46:13,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 21:46:13,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:46:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:14,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27818778] [2020-09-24 21:46:14,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:14,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:46:14,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327525291] [2020-09-24 21:46:14,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:46:14,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:14,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:46:14,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:46:14,174 INFO L87 Difference]: Start difference. First operand 1900 states and 2559 transitions. Second operand 10 states. [2020-09-24 21:46:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:18,546 INFO L93 Difference]: Finished difference Result 4759 states and 6704 transitions. [2020-09-24 21:46:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:46:18,546 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 238 [2020-09-24 21:46:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:18,568 INFO L225 Difference]: With dead ends: 4759 [2020-09-24 21:46:18,569 INFO L226 Difference]: Without dead ends: 3024 [2020-09-24 21:46:18,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:46:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2020-09-24 21:46:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 2763. [2020-09-24 21:46:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2763 states. [2020-09-24 21:46:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3702 transitions. [2020-09-24 21:46:18,677 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3702 transitions. Word has length 238 [2020-09-24 21:46:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:18,679 INFO L479 AbstractCegarLoop]: Abstraction has 2763 states and 3702 transitions. [2020-09-24 21:46:18,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:46:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3702 transitions. [2020-09-24 21:46:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 21:46:18,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:18,684 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:18,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:18,685 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:18,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1974472140, now seen corresponding path program 1 times [2020-09-24 21:46:18,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:18,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029106201] [2020-09-24 21:46:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:23,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:23,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 21:46:23,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:46:23,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:46:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-09-24 21:46:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:24,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:24,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:46:24,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:24,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:24,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 21:46:24,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 21:46:24,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:46:24,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1