/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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:40:11,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:40:11,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:40:11,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:40:11,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:40:11,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:40:11,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:40:11,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:40:11,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:40:11,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:40:11,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:40:11,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:40:11,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:40:11,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:40:11,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:40:11,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:40:11,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:40:11,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:40:11,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:40:11,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:40:11,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:40:11,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:40:11,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:40:11,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:40:11,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:40:11,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:40:11,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:40:11,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:40:11,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:40:11,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:40:11,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:40:11,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:40:11,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:40:11,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:40:11,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:40:11,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:40:11,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:40:11,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:40:11,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:40:11,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:40:11,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:40:11,320 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 21:40:11,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:40:11,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:40:11,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:40:11,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:40:11,372 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:40:11,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:40:11,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:40:11,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:40:11,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:40:11,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:40:11,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:40:11,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:40:11,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:40:11,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:40:11,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:40:11,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:40:11,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:40:11,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:40:11,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:40:11,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:40:11,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:40:11,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:40:11,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:40:11,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:40:11,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:40:11,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:40:11,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:40:11,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:40:11,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:40:11,378 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 21:40:11,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:40:11,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:40:11,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:40:11,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:40:11,902 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:40:11,904 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-24 21:40:11,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03b964304/8c92dc479666445289c2bac1042c1f9e/FLAGb73ab6a37 [2020-09-24 21:40:12,715 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:40:12,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-24 21:40:12,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03b964304/8c92dc479666445289c2bac1042c1f9e/FLAGb73ab6a37 [2020-09-24 21:40:12,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03b964304/8c92dc479666445289c2bac1042c1f9e [2020-09-24 21:40:12,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:40:12,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:40:12,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:12,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:40:12,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:40:12,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d5d771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:12, skipping insertion in model container [2020-09-24 21:40:12,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:40:12" (1/1) ... [2020-09-24 21:40:12,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:40:13,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:40:13,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:13,593 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:40:13,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:13,736 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:40:13,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13 WrapperNode [2020-09-24 21:40:13,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:13,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:40:13,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:40:13,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:40:13,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (1/1) ... [2020-09-24 21:40:13,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (1/1) ... [2020-09-24 21:40:13,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (1/1) ... [2020-09-24 21:40:13,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (1/1) ... [2020-09-24 21:40:13,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (1/1) ... [2020-09-24 21:40:13,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (1/1) ... [2020-09-24 21:40:13,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (1/1) ... [2020-09-24 21:40:13,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:40:13,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:40:13,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:40:13,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:40:13,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (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 21:40:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:40:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:40:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:40:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:40:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:40:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:40:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:40:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:40:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:40:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:40:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:40:15,371 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:40:15,372 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:40:15,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:15 BoogieIcfgContainer [2020-09-24 21:40:15,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:40:15,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:40:15,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:40:15,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:40:15,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:40:12" (1/3) ... [2020-09-24 21:40:15,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dbd542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:15, skipping insertion in model container [2020-09-24 21:40:15,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:13" (2/3) ... [2020-09-24 21:40:15,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dbd542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:15, skipping insertion in model container [2020-09-24 21:40:15,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:15" (3/3) ... [2020-09-24 21:40:15,394 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2020-09-24 21:40:15,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:40:15,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:40:15,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:40:15,480 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:40:15,480 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:40:15,480 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:40:15,481 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:40:15,481 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:40:15,481 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:40:15,481 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:40:15,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:40:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:40:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 21:40:15,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:15,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:15,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:15,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:15,546 INFO L82 PathProgramCache]: Analyzing trace with hash -2063330177, now seen corresponding path program 1 times [2020-09-24 21:40:15,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:15,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767998602] [2020-09-24 21:40:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-24 21:40:20,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:40:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 21:40:20,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:40:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:40:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:40:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:40:21,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:21,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:21,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:21,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 21:40:21,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:40:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:22,214 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 21:40:22,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767998602] [2020-09-24 21:40:22,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:40:22,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:40:22,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540930811] [2020-09-24 21:40:22,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:40:22,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:22,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:40:22,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:40:22,250 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:40:22,852 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-24 21:40:23,126 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-24 21:40:23,373 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-24 21:40:23,824 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-09-24 21:40:24,788 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-09-24 21:40:25,224 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-24 21:40:29,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:29,031 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:40:29,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:40:29,033 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 140 [2020-09-24 21:40:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:29,064 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:40:29,064 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:40:29,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:40:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:40:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:40:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:40:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1147 transitions. [2020-09-24 21:40:29,212 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1147 transitions. Word has length 140 [2020-09-24 21:40:29,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:29,213 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1147 transitions. [2020-09-24 21:40:29,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:40:29,213 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1147 transitions. [2020-09-24 21:40:29,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-24 21:40:29,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:29,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:29,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:40:29,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:29,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:29,223 INFO L82 PathProgramCache]: Analyzing trace with hash -55775702, now seen corresponding path program 1 times [2020-09-24 21:40:29,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:29,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819985335] [2020-09-24 21:40:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-24 21:40:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:40:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:40:34,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:40:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:40:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:40:34,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:40:35,090 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-09-24 21:40:35,218 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-09-24 21:40:35,342 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-09-24 21:40:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:35,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:35,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:35,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 21:40:35,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 21:40:35,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:35,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:40:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 21:40:35,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:40:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:35,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:40:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:40:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:36,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:36,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 21:40:36,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:40:36,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819985335] [2020-09-24 21:40:36,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:36,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:40:36,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957885904] [2020-09-24 21:40:36,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:40:36,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:36,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:40:36,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:40:36,581 INFO L87 Difference]: Start difference. First operand 985 states and 1147 transitions. Second operand 23 states. [2020-09-24 21:40:37,367 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-24 21:40:38,203 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-09-24 21:40:39,370 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-09-24 21:40:41,246 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-09-24 21:40:41,625 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-09-24 21:40:41,999 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2020-09-24 21:40:42,829 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-09-24 21:40:43,873 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2020-09-24 21:40:44,608 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-09-24 21:40:44,996 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2020-09-24 21:40:45,929 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-09-24 21:40:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:47,675 INFO L93 Difference]: Finished difference Result 3504 states and 4487 transitions. [2020-09-24 21:40:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 21:40:47,676 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 178 [2020-09-24 21:40:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:47,705 INFO L225 Difference]: With dead ends: 3504 [2020-09-24 21:40:47,705 INFO L226 Difference]: Without dead ends: 2607 [2020-09-24 21:40:47,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=633, Invalid=1719, Unknown=0, NotChecked=0, Total=2352 [2020-09-24 21:40:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2020-09-24 21:40:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2181. [2020-09-24 21:40:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2181 states. [2020-09-24 21:40:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2644 transitions. [2020-09-24 21:40:47,864 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2644 transitions. Word has length 178 [2020-09-24 21:40:47,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:47,865 INFO L479 AbstractCegarLoop]: Abstraction has 2181 states and 2644 transitions. [2020-09-24 21:40:47,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:40:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2644 transitions. [2020-09-24 21:40:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 21:40:47,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:47,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:47,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:40:47,883 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:47,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:47,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1448770744, now seen corresponding path program 1 times [2020-09-24 21:40:47,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:47,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687191579] [2020-09-24 21:40:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:52,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:52,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 21:40:52,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:40:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 21:40:52,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:40:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:40:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:40:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:53,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:53,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:53,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:40:53,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:40:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:53,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:53,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:53,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:53,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 21:40:53,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:53,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 21:40:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:53,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:53,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:53,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 21:40:53,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:40:53,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687191579] [2020-09-24 21:40:53,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:53,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:40:53,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046917867] [2020-09-24 21:40:53,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:40:53,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:53,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:40:53,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:40:53,262 INFO L87 Difference]: Start difference. First operand 2181 states and 2644 transitions. Second operand 8 states. [2020-09-24 21:40:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:56,083 INFO L93 Difference]: Finished difference Result 5521 states and 7058 transitions. [2020-09-24 21:40:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:40:56,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-09-24 21:40:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:56,116 INFO L225 Difference]: With dead ends: 5521 [2020-09-24 21:40:56,116 INFO L226 Difference]: Without dead ends: 3428 [2020-09-24 21:40:56,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:40:56,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2020-09-24 21:40:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3312. [2020-09-24 21:40:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-09-24 21:40:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4080 transitions. [2020-09-24 21:40:56,329 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4080 transitions. Word has length 182 [2020-09-24 21:40:56,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:56,331 INFO L479 AbstractCegarLoop]: Abstraction has 3312 states and 4080 transitions. [2020-09-24 21:40:56,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:40:56,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4080 transitions. [2020-09-24 21:40:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 21:40:56,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:56,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:56,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:40:56,349 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash -2099631972, now seen corresponding path program 1 times [2020-09-24 21:40:56,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:56,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322075775] [2020-09-24 21:40:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking...