/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/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:38:47,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:38:47,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:38:47,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:38:47,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:38:47,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:38:47,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:38:47,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:38:47,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:38:47,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:38:47,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:38:47,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:38:47,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:38:47,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:38:47,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:38:47,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:38:47,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:38:47,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:38:47,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:38:47,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:38:47,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:38:47,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:38:47,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:38:47,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:38:47,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:38:47,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:38:47,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:38:47,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:38:47,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:38:47,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:38:47,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:38:47,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:38:47,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:38:47,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:38:47,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:38:47,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:38:47,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:38:47,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:38:47,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:38:47,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:38:47,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:38:47,445 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 21:38:47,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:38:47,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:38:47,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:38:47,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:38:47,496 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:38:47,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:38:47,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:38:47,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:38:47,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:38:47,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:38:47,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:38:47,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:38:47,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:38:47,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:38:47,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:38:47,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:38:47,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:38:47,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:38:47,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:38:47,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:38:47,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:38:47,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:47,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:38:47,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:38:47,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:38:47,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:38:47,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:38:47,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:38:47,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:38:47,502 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 21:38:47,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:38:47,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:38:47,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:38:47,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:38:47,965 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:38:47,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-24 21:38:48,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eadf3faf/ca1a0a10e8da429a90741cfeb5fb00d2/FLAGbab9a8763 [2020-09-24 21:38:48,676 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:38:48,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-24 21:38:48,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eadf3faf/ca1a0a10e8da429a90741cfeb5fb00d2/FLAGbab9a8763 [2020-09-24 21:38:48,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eadf3faf/ca1a0a10e8da429a90741cfeb5fb00d2 [2020-09-24 21:38:48,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:38:48,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:38:48,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:48,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:38:48,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:38:48,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:48" (1/1) ... [2020-09-24 21:38:48,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:48, skipping insertion in model container [2020-09-24 21:38:48,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:48" (1/1) ... [2020-09-24 21:38:48,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:38:49,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:38:49,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:49,491 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:38:49,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:49,701 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:38:49,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49 WrapperNode [2020-09-24 21:38:49,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:49,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:38:49,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:38:49,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:38:49,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (1/1) ... [2020-09-24 21:38:49,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (1/1) ... [2020-09-24 21:38:49,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (1/1) ... [2020-09-24 21:38:49,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (1/1) ... [2020-09-24 21:38:49,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (1/1) ... [2020-09-24 21:38:49,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (1/1) ... [2020-09-24 21:38:49,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (1/1) ... [2020-09-24 21:38:49,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:38:49,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:38:49,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:38:49,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:38:49,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (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 21:38:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:38:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:38:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:38:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:38:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:38:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:38:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:38:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:38:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:38:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:38:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:38:51,259 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:38:51,259 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:38:51,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:51 BoogieIcfgContainer [2020-09-24 21:38:51,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:38:51,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:38:51,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:38:51,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:38:51,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:38:48" (1/3) ... [2020-09-24 21:38:51,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:51, skipping insertion in model container [2020-09-24 21:38:51,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:49" (2/3) ... [2020-09-24 21:38:51,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:51, skipping insertion in model container [2020-09-24 21:38:51,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:51" (3/3) ... [2020-09-24 21:38:51,280 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-24 21:38:51,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:38:51,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:38:51,330 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:38:51,367 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:38:51,368 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:38:51,368 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:38:51,368 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:38:51,368 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:38:51,368 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:38:51,369 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:38:51,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:38:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:38:51,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 21:38:51,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:51,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:51,426 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-24 21:38:51,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:51,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-24 21:38:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:53,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:56,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:56,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 21:38:56,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:38:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:38:56,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:38:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:38:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:38:56,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:38:57,405 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-09-24 21:38:57,536 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-09-24 21:38:57,719 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 40 [2020-09-24 21:38:57,898 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 38 [2020-09-24 21:38:58,049 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 38 [2020-09-24 21:38:58,189 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 36 [2020-09-24 21:38:58,335 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2020-09-24 21:38:58,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:58,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:38:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 21:38:58,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:38:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:38:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:58,868 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 21:38:58,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-24 21:38:58,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:58,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:38:58,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350151940] [2020-09-24 21:38:58,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:38:58,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:58,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:38:58,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:38:58,903 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:38:59,355 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-24 21:38:59,527 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-24 21:38:59,718 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-24 21:39:00,062 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-09-24 21:39:00,401 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2020-09-24 21:39:00,991 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-09-24 21:39:02,076 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2020-09-24 21:39:02,723 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-09-24 21:39:03,526 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 21:39:04,146 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 21:39:05,205 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-09-24 21:39:08,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:08,186 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:39:08,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 21:39:08,188 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 136 [2020-09-24 21:39:08,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:08,217 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:39:08,218 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:39:08,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:39:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:39:08,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:39:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:39:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1148 transitions. [2020-09-24 21:39:08,365 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1148 transitions. Word has length 136 [2020-09-24 21:39:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:08,366 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1148 transitions. [2020-09-24 21:39:08,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:39:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1148 transitions. [2020-09-24 21:39:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 21:39:08,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:08,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:39:08,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:39:08,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:08,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:08,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1766394946, now seen corresponding path program 1 times [2020-09-24 21:39:08,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:08,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473224625] [2020-09-24 21:39:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:10,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:10,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:13,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 21:39:13,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:39:13,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:39:13,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:39:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:39:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:13,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:13,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 21:39:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:13,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:13,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:13,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:13,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:13,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 21:39:13,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:39:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:14,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473224625] [2020-09-24 21:39:14,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:14,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:39:14,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910375958] [2020-09-24 21:39:14,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:39:14,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:14,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:39:14,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:39:14,201 INFO L87 Difference]: Start difference. First operand 985 states and 1148 transitions. Second operand 13 states. [2020-09-24 21:39:15,390 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-09-24 21:39:15,906 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-09-24 21:39:16,053 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-09-24 21:39:16,323 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-09-24 21:39:18,095 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-09-24 21:39:20,958 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-24 21:39:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:21,803 INFO L93 Difference]: Finished difference Result 2792 states and 3410 transitions. [2020-09-24 21:39:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 21:39:21,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 157 [2020-09-24 21:39:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:21,814 INFO L225 Difference]: With dead ends: 2792 [2020-09-24 21:39:21,815 INFO L226 Difference]: Without dead ends: 1489 [2020-09-24 21:39:21,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=406, Invalid=926, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:39:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-09-24 21:39:21,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1269. [2020-09-24 21:39:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-09-24 21:39:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1456 transitions. [2020-09-24 21:39:21,879 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1456 transitions. Word has length 157 [2020-09-24 21:39:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:21,879 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1456 transitions. [2020-09-24 21:39:21,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:39:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1456 transitions. [2020-09-24 21:39:21,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 21:39:21,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:21,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:39:21,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:39:21,891 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash 152029022, now seen corresponding path program 1 times [2020-09-24 21:39:21,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:21,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714649413] [2020-09-24 21:39:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:22,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:27,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 21:39:27,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:39:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-24 21:39:27,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:39:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-24 21:39:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:39:27,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:27,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:27,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 21:39:27,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 21:39:27,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:39:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:27,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:39:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:39:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:28,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714649413] [2020-09-24 21:39:28,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:28,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:39:28,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18039424] [2020-09-24 21:39:28,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:39:28,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:28,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:39:28,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:39:28,172 INFO L87 Difference]: Start difference. First operand 1269 states and 1456 transitions. Second operand 13 states. [2020-09-24 21:39:29,566 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-09-24 21:39:29,706 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2020-09-24 21:39:30,077 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-09-24 21:39:31,177 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-09-24 21:39:31,841 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-09-24 21:39:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:35,546 INFO L93 Difference]: Finished difference Result 1736 states and 1960 transitions. [2020-09-24 21:39:35,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 21:39:35,547 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 170 [2020-09-24 21:39:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:35,558 INFO L225 Difference]: With dead ends: 1736 [2020-09-24 21:39:35,558 INFO L226 Difference]: Without dead ends: 1484 [2020-09-24 21:39:35,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=373, Invalid=887, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 21:39:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-09-24 21:39:35,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1271. [2020-09-24 21:39:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-09-24 21:39:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1452 transitions. [2020-09-24 21:39:35,606 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1452 transitions. Word has length 170 [2020-09-24 21:39:35,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:35,607 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1452 transitions. [2020-09-24 21:39:35,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:39:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1452 transitions. [2020-09-24 21:39:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-24 21:39:35,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:35,612 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:39:35,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:39:35,612 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:35,613 INFO L82 PathProgramCache]: Analyzing trace with hash 278636355, now seen corresponding path program 1 times [2020-09-24 21:39:35,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:35,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839077954] [2020-09-24 21:39:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:39,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:40,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:40,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 21:39:40,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:39:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 21:39:40,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:39:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-24 21:39:40,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0