/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/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:32,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:32,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:32,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:32,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:32,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:32,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:32,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:32,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:32,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:32,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:32,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:32,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:32,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:32,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:32,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:32,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:32,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:32,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:32,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:32,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:32,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:32,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:32,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:32,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:32,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:32,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:32,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:32,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:32,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:32,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:32,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:32,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:32,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:32,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:32,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:32,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:32,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:32,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:32,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:32,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:32,308 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 18:23:32,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:32,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:32,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:32,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:32,369 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:32,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:32,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:32,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:32,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:32,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:32,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:32,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:32,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:32,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:32,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:32,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:32,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:32,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:32,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:32,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:32,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:32,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:32,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:32,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:32,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:32,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:32,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:32,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:32,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:32,375 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 18:23:32,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:32,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:32,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:32,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:32,874 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:32,875 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-24 18:23:32,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05b953ab5/ac919ff174ed4ae8a14c75a25ec82790/FLAGf84fc9aaf [2020-09-24 18:23:33,628 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:33,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-24 18:23:33,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05b953ab5/ac919ff174ed4ae8a14c75a25ec82790/FLAGf84fc9aaf [2020-09-24 18:23:33,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05b953ab5/ac919ff174ed4ae8a14c75a25ec82790 [2020-09-24 18:23:33,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:33,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:33,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:33,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:33,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:33,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ed4c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33, skipping insertion in model container [2020-09-24 18:23:33,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:33,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:34,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:34,516 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:34,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:34,687 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:34,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34 WrapperNode [2020-09-24 18:23:34,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:34,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:34,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:34,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:34,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (1/1) ... [2020-09-24 18:23:34,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:34,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:34,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:34,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:34,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (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 18:23:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:36,309 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:36,310 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:36,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:36 BoogieIcfgContainer [2020-09-24 18:23:36,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:36,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:36,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:36,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:36,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:33" (1/3) ... [2020-09-24 18:23:36,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac59ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:36, skipping insertion in model container [2020-09-24 18:23:36,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:34" (2/3) ... [2020-09-24 18:23:36,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac59ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:36, skipping insertion in model container [2020-09-24 18:23:36,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:36" (3/3) ... [2020-09-24 18:23:36,330 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-24 18:23:36,342 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:36,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:36,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:36,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:36,415 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:36,415 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:36,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:36,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:36,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:36,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:36,416 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 18:23:36,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:36,478 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, 1, 1, 1, 1, 1] [2020-09-24 18:23:36,478 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:36,489 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-24 18:23:36,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:36,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025305111] [2020-09-24 18:23:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 18:23:41,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:23:41,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:23:41,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 18:23:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:42,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:42,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:42,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:42,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:42,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:23:42,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:42,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:42,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:23:42,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:23:42,213 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 18:23:42,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025305111] [2020-09-24 18:23:42,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:42,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:42,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510117579] [2020-09-24 18:23:42,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:42,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:42,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:42,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:42,253 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:45,120 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-24 18:23:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:45,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-24 18:23:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:45,159 INFO L225 Difference]: With dead ends: 1247 [2020-09-24 18:23:45,159 INFO L226 Difference]: Without dead ends: 669 [2020-09-24 18:23:45,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-24 18:23:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-24 18:23:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:23:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:23:45,340 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-24 18:23:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:45,343 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:23:45,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:23:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 18:23:45,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:45,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:45,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:45,359 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:45,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:45,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-24 18:23:45,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:45,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743911072] [2020-09-24 18:23:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:50,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 18:23:50,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:23:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:23:50,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:50,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:50,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:23:50,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:50,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:50,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:50,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:23:50,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:50,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:50,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:50,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:23:50,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:50,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:50,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743911072] [2020-09-24 18:23:50,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:50,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:50,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064453981] [2020-09-24 18:23:50,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:50,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:50,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:50,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:50,788 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:23:52,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:52,923 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-24 18:23:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:52,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-24 18:23:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:52,932 INFO L225 Difference]: With dead ends: 1531 [2020-09-24 18:23:52,932 INFO L226 Difference]: Without dead ends: 932 [2020-09-24 18:23:52,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:52,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-24 18:23:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-24 18:23:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-24 18:23:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-24 18:23:52,995 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 166 [2020-09-24 18:23:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:52,996 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-24 18:23:52,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-24 18:23:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 18:23:53,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:53,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-09-24 18:23:53,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:53,004 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:53,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:53,005 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-24 18:23:53,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:53,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674573534] [2020-09-24 18:23:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:58,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-24 18:23:58,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 18:23:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:23:58,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:23:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:23:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:58,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:58,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:58,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:58,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:58,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:58,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:23:58,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:23:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:58,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:23:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:58,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:58,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:58,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:23:58,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:58,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:58,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:23:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:58,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674573534] [2020-09-24 18:23:58,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:58,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:58,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570957037] [2020-09-24 18:23:58,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:58,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:58,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:58,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:58,370 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 7 states. [2020-09-24 18:24:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:01,128 INFO L93 Difference]: Finished difference Result 2200 states and 2789 transitions. [2020-09-24 18:24:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:01,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-09-24 18:24:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:01,137 INFO L225 Difference]: With dead ends: 2200 [2020-09-24 18:24:01,138 INFO L226 Difference]: Without dead ends: 1300 [2020-09-24 18:24:01,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2020-09-24 18:24:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1243. [2020-09-24 18:24:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-09-24 18:24:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1474 transitions. [2020-09-24 18:24:01,200 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1474 transitions. Word has length 184 [2020-09-24 18:24:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:01,200 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1474 transitions. [2020-09-24 18:24:01,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:01,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1474 transitions. [2020-09-24 18:24:01,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 18:24:01,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:01,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:01,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:24:01,208 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:01,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:01,209 INFO L82 PathProgramCache]: Analyzing trace with hash 817645172, now seen corresponding path program 1 times [2020-09-24 18:24:01,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:01,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931439583] [2020-09-24 18:24:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:06,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 18:24:06,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:06,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 18:24:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:24:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:24:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:06,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:06,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:06,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:06,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:06,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:06,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:06,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:24:06,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:24:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:06,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:24:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:06,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:24:06,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:24:06,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:24:06,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:06,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931439583] [2020-09-24 18:24:06,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:06,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:06,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346001438] [2020-09-24 18:24:06,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:06,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:06,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:06,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:06,589 INFO L87 Difference]: Start difference. First operand 1243 states and 1474 transitions. Second operand 7 states. [2020-09-24 18:24:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:09,575 INFO L93 Difference]: Finished difference Result 2850 states and 3563 transitions. [2020-09-24 18:24:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:09,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-24 18:24:09,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:09,589 INFO L225 Difference]: With dead ends: 2850 [2020-09-24 18:24:09,590 INFO L226 Difference]: Without dead ends: 1629 [2020-09-24 18:24:09,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-09-24 18:24:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1559. [2020-09-24 18:24:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-09-24 18:24:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 1843 transitions. [2020-09-24 18:24:09,667 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 1843 transitions. Word has length 189 [2020-09-24 18:24:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:09,668 INFO L479 AbstractCegarLoop]: Abstraction has 1559 states and 1843 transitions. [2020-09-24 18:24:09,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 1843 transitions. [2020-09-24 18:24:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 18:24:09,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:09,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:09,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:09,676 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-24 18:24:09,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:09,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508371852] [2020-09-24 18:24:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:10,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:14,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 18:24:14,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:14,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:24:14,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 18:24:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:24:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:14,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:14,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:24:14,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:24:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:24:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:24:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:15,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508371852] [2020-09-24 18:24:15,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:15,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:15,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568450925] [2020-09-24 18:24:15,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:15,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:15,165 INFO L87 Difference]: Start difference. First operand 1559 states and 1843 transitions. Second operand 5 states. [2020-09-24 18:24:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:17,576 INFO L93 Difference]: Finished difference Result 4281 states and 5220 transitions. [2020-09-24 18:24:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:17,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-24 18:24:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:17,591 INFO L225 Difference]: With dead ends: 4281 [2020-09-24 18:24:17,591 INFO L226 Difference]: Without dead ends: 2744 [2020-09-24 18:24:17,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2020-09-24 18:24:17,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2643. [2020-09-24 18:24:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2020-09-24 18:24:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3188 transitions. [2020-09-24 18:24:17,672 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3188 transitions. Word has length 191 [2020-09-24 18:24:17,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:17,673 INFO L479 AbstractCegarLoop]: Abstraction has 2643 states and 3188 transitions. [2020-09-24 18:24:17,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3188 transitions. [2020-09-24 18:24:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 18:24:17,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:17,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:17,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:17,684 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:17,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:17,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1421897619, now seen corresponding path program 1 times [2020-09-24 18:24:17,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:17,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951464050] [2020-09-24 18:24:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking...