/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=SMALLEST --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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:40,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:40,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:40,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:40,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:40,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:40,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:40,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:40,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:40,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:40,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:40,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:40,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:40,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:40,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:40,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:40,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:40,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:40,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:40,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:40,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:40,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:40,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:40,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:40,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:40,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:40,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:40,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:40,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:40,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:40,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:40,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:40,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:40,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:40,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:40,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:40,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:40,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:40,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:40,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:40,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:40,333 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 18:19:40,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:40,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:40,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:40,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:40,394 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:40,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:40,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:40,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:40,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:40,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:40,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:40,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:40,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:40,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:40,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:40,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:40,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:40,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:40,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:40,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:40,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:40,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:40,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:40,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:40,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:40,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:40,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:40,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:40,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:40,404 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:19:40,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:40,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:40,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:40,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:40,923 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:40,924 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-24 18:19:41,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7c1ffe0a/f65950b01d594cdaa5ec1f3fc713797c/FLAG1ffd8866c [2020-09-24 18:19:41,664 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:41,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-24 18:19:41,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7c1ffe0a/f65950b01d594cdaa5ec1f3fc713797c/FLAG1ffd8866c [2020-09-24 18:19:41,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7c1ffe0a/f65950b01d594cdaa5ec1f3fc713797c [2020-09-24 18:19:41,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:41,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:41,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:41,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:41,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:41,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:41" (1/1) ... [2020-09-24 18:19:41,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66409f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:41, skipping insertion in model container [2020-09-24 18:19:41,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:41" (1/1) ... [2020-09-24 18:19:41,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:42,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:42,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:42,508 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:42,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:42,776 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:42,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42 WrapperNode [2020-09-24 18:19:42,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:42,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:42,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:42,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:42,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (1/1) ... [2020-09-24 18:19:42,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:42,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:42,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:42,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:42,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (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 18:19:42,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:42,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:42,982 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:42,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:42,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:42,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:44,405 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:44,405 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:44,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:44 BoogieIcfgContainer [2020-09-24 18:19:44,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:44,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:44,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:44,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:44,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:41" (1/3) ... [2020-09-24 18:19:44,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214831aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:44, skipping insertion in model container [2020-09-24 18:19:44,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:42" (2/3) ... [2020-09-24 18:19:44,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214831aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:44, skipping insertion in model container [2020-09-24 18:19:44,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:44" (3/3) ... [2020-09-24 18:19:44,438 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-24 18:19:44,452 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:44,468 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:44,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:44,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:44,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:44,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:44,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:44,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:44,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:44,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:44,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:44,573 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 18:19:44,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:44,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:44,598 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:44,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-24 18:19:44,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:44,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130794549] [2020-09-24 18:19:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:49,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 18:19:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:19:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:19:49,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:19:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 18:19:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:19:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:50,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:50,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:50,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:19:50,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:50,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:50,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:50,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:50,299 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 18:19:50,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130794549] [2020-09-24 18:19:50,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:50,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:50,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484591984] [2020-09-24 18:19:50,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:50,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:50,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:50,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:50,336 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:19:52,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:52,498 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-24 18:19:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:19:52,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-24 18:19:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:52,544 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 18:19:52,544 INFO L226 Difference]: Without dead ends: 661 [2020-09-24 18:19:52,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-24 18:19:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-24 18:19:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-24 18:19:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-24 18:19:52,670 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 144 [2020-09-24 18:19:52,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:52,671 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-24 18:19:52,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-24 18:19:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 18:19:52,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:52,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:52,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:52,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:52,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1954242604, now seen corresponding path program 1 times [2020-09-24 18:19:52,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:52,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660099278] [2020-09-24 18:19:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-24 18:19:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:19:57,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 18:19:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 18:19:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:19:57,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:57,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:57,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:19:57,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:57,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:58,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:58,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:58,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:19:58,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:19:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:58,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660099278] [2020-09-24 18:19:58,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:58,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:19:58,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605515219] [2020-09-24 18:19:58,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:19:58,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:58,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:19:58,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:19:58,089 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 6 states. [2020-09-24 18:20:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:00,244 INFO L93 Difference]: Finished difference Result 1552 states and 1903 transitions. [2020-09-24 18:20:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:00,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-24 18:20:00,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:00,257 INFO L225 Difference]: With dead ends: 1552 [2020-09-24 18:20:00,257 INFO L226 Difference]: Without dead ends: 971 [2020-09-24 18:20:00,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-24 18:20:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 891. [2020-09-24 18:20:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-24 18:20:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1102 transitions. [2020-09-24 18:20:00,327 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1102 transitions. Word has length 161 [2020-09-24 18:20:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:00,329 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1102 transitions. [2020-09-24 18:20:00,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:20:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1102 transitions. [2020-09-24 18:20:00,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 18:20:00,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:00,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:00,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:00,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:00,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1093248032, now seen corresponding path program 1 times [2020-09-24 18:20:00,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:00,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099505466] [2020-09-24 18:20:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:05,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 18:20:05,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:20:05,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:20:05,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:20:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:20:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:05,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:05,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:05,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:20:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:20:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:05,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:05,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:20:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 18:20:05,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:20:05,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:05,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099505466] [2020-09-24 18:20:05,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:05,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:20:05,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454012092] [2020-09-24 18:20:05,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:05,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:05,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:05,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:05,895 INFO L87 Difference]: Start difference. First operand 891 states and 1102 transitions. Second operand 7 states. [2020-09-24 18:20:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:07,833 INFO L93 Difference]: Finished difference Result 2228 states and 2854 transitions. [2020-09-24 18:20:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:20:07,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-24 18:20:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:07,843 INFO L225 Difference]: With dead ends: 2228 [2020-09-24 18:20:07,844 INFO L226 Difference]: Without dead ends: 1361 [2020-09-24 18:20:07,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:20:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-24 18:20:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1330. [2020-09-24 18:20:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-24 18:20:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1647 transitions. [2020-09-24 18:20:07,898 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1647 transitions. Word has length 181 [2020-09-24 18:20:07,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:07,899 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1647 transitions. [2020-09-24 18:20:07,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:07,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1647 transitions. [2020-09-24 18:20:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 18:20:07,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:07,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:07,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:07,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:07,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:07,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2008051425, now seen corresponding path program 1 times [2020-09-24 18:20:07,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:07,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830742516] [2020-09-24 18:20:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:13,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 18:20:13,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-09-24 18:20:13,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:20:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:20:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 18:20:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:13,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:13,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:20:13,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:20:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:20:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:20:13,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 18:20:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:20:13,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:13,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830742516] [2020-09-24 18:20:13,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:13,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:20:13,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881726534] [2020-09-24 18:20:13,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:20:13,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:13,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:20:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:20:13,568 INFO L87 Difference]: Start difference. First operand 1330 states and 1647 transitions. Second operand 8 states. [2020-09-24 18:20:14,218 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 18:20:16,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:16,894 INFO L93 Difference]: Finished difference Result 3887 states and 4964 transitions. [2020-09-24 18:20:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 18:20:16,899 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-09-24 18:20:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:16,915 INFO L225 Difference]: With dead ends: 3887 [2020-09-24 18:20:16,916 INFO L226 Difference]: Without dead ends: 2581 [2020-09-24 18:20:16,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:20:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2020-09-24 18:20:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2063. [2020-09-24 18:20:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2020-09-24 18:20:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 2531 transitions. [2020-09-24 18:20:17,017 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 2531 transitions. Word has length 187 [2020-09-24 18:20:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:17,018 INFO L479 AbstractCegarLoop]: Abstraction has 2063 states and 2531 transitions. [2020-09-24 18:20:17,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:20:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 2531 transitions. [2020-09-24 18:20:17,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-24 18:20:17,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:17,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:17,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:17,029 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:17,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:17,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1152735310, now seen corresponding path program 1 times [2020-09-24 18:20:17,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:17,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793949398] [2020-09-24 18:20:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:22,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-24 18:20:22,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:20:22,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:20:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 18:20:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:22,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:22,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:22,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:20:22,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:22,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:22,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:22,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:22,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:22,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:22,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:20:22,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:22,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:22,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:20:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:22,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:22,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:20:22,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 18:20:22,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:20:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:20:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:22,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793949398] [2020-09-24 18:20:22,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:22,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:22,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657897080] [2020-09-24 18:20:22,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:22,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:22,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:22,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:22,471 INFO L87 Difference]: Start difference. First operand 2063 states and 2531 transitions. Second operand 7 states. [2020-09-24 18:20:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:25,378 INFO L93 Difference]: Finished difference Result 5178 states and 6519 transitions. [2020-09-24 18:20:25,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:20:25,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-09-24 18:20:25,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:25,396 INFO L225 Difference]: With dead ends: 5178 [2020-09-24 18:20:25,397 INFO L226 Difference]: Without dead ends: 3280 [2020-09-24 18:20:25,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2020-09-24 18:20:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2544. [2020-09-24 18:20:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2544 states. [2020-09-24 18:20:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3077 transitions. [2020-09-24 18:20:25,494 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3077 transitions. Word has length 208 [2020-09-24 18:20:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:25,495 INFO L479 AbstractCegarLoop]: Abstraction has 2544 states and 3077 transitions. [2020-09-24 18:20:25,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:25,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3077 transitions. [2020-09-24 18:20:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-24 18:20:25,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:25,509 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:25,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:25,509 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:25,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1710427909, now seen corresponding path program 1 times [2020-09-24 18:20:25,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:25,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633343406] [2020-09-24 18:20:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking...