/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:32,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:32,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:32,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:32,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:32,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:32,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:32,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:32,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:32,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:32,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:32,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:32,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:32,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:32,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:32,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:32,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:32,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:32,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:32,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:32,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:32,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:32,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:32,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:32,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:32,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:32,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:32,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:32,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:32,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:32,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:32,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:32,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:32,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:32,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:32,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:32,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:32,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:32,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:32,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:32,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:32,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:44:32,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:32,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:32,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:32,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:32,349 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:32,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:32,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:32,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:32,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:32,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:32,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:32,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:32,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:32,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:32,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:32,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:32,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:32,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:32,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:32,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:32,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:32,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:32,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:32,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:32,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:32,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:32,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:32,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:32,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:32,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:32,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:32,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:32,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:32,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:32,853 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:32,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-24 21:44:32,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/903ff40d6/a6aad3b945f7488ea39a2eb0f3d8a7bc/FLAGd4e194f19 [2020-09-24 21:44:33,619 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:33,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-24 21:44:33,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/903ff40d6/a6aad3b945f7488ea39a2eb0f3d8a7bc/FLAGd4e194f19 [2020-09-24 21:44:33,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/903ff40d6/a6aad3b945f7488ea39a2eb0f3d8a7bc [2020-09-24 21:44:33,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:33,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:33,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:33,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:33,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:33,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:33" (1/1) ... [2020-09-24 21:44:33,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3116520e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:33, skipping insertion in model container [2020-09-24 21:44:33,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:33" (1/1) ... [2020-09-24 21:44:33,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:33,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:34,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:34,620 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:34,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:34,751 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:34,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34 WrapperNode [2020-09-24 21:44:34,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:34,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:34,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:34,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:34,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (1/1) ... [2020-09-24 21:44:34,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (1/1) ... [2020-09-24 21:44:34,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (1/1) ... [2020-09-24 21:44:34,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (1/1) ... [2020-09-24 21:44:34,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (1/1) ... [2020-09-24 21:44:34,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (1/1) ... [2020-09-24 21:44:34,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (1/1) ... [2020-09-24 21:44:34,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:34,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:34,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:34,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:34,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (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 21:44:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:36,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:36,531 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:36,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:36 BoogieIcfgContainer [2020-09-24 21:44:36,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:36,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:36,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:36,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:36,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:33" (1/3) ... [2020-09-24 21:44:36,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47579d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:36, skipping insertion in model container [2020-09-24 21:44:36,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:34" (2/3) ... [2020-09-24 21:44:36,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47579d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:36, skipping insertion in model container [2020-09-24 21:44:36,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:36" (3/3) ... [2020-09-24 21:44:36,550 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-09-24 21:44:36,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:36,574 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:36,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:36,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:36,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:36,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:36,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:36,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:36,633 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:36,633 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:36,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 21:44:36,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:36,680 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] [2020-09-24 21:44:36,680 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:36,689 INFO L82 PathProgramCache]: Analyzing trace with hash -938747945, now seen corresponding path program 1 times [2020-09-24 21:44:36,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:36,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273821715] [2020-09-24 21:44:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:44:37,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-09-24 21:44:37,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:44:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 21:44:37,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:38,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:38,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:38,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:38,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 21:44:38,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:44:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:38,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273821715] [2020-09-24 21:44:38,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:38,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:44:38,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724335073] [2020-09-24 21:44:38,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:44:38,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:38,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:44:38,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:38,123 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:44:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:40,839 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-24 21:44:40,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:44:40,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-09-24 21:44:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:40,881 INFO L225 Difference]: With dead ends: 1226 [2020-09-24 21:44:40,881 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 21:44:40,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:44:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 21:44:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-24 21:44:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:44:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-24 21:44:41,011 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 59 [2020-09-24 21:44:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:41,012 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-24 21:44:41,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:44:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-24 21:44:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 21:44:41,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:41,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:41,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:41,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:41,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:41,028 INFO L82 PathProgramCache]: Analyzing trace with hash -899949441, now seen corresponding path program 1 times [2020-09-24 21:44:41,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:41,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438701179] [2020-09-24 21:44:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:46,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 21:44:46,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:44:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:44:46,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 21:44:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:46,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:46,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:46,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:46,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:44:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:46,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:46,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:44:46,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-24 21:44:46,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 21:44:46,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:46,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438701179] [2020-09-24 21:44:46,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:46,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:44:46,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688262609] [2020-09-24 21:44:46,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:44:46,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:46,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:44:46,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:44:46,888 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-24 21:44:49,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:49,117 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-24 21:44:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:44:49,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-24 21:44:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:49,131 INFO L225 Difference]: With dead ends: 1574 [2020-09-24 21:44:49,131 INFO L226 Difference]: Without dead ends: 894 [2020-09-24 21:44:49,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:44:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-24 21:44:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-24 21:44:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-24 21:44:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-24 21:44:49,193 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 188 [2020-09-24 21:44:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:49,194 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-24 21:44:49,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:44:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-24 21:44:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 21:44:49,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:49,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:49,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:49,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:49,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1891490353, now seen corresponding path program 1 times [2020-09-24 21:44:49,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:49,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864667403] [2020-09-24 21:44:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:49,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:49,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:54,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 21:44:54,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:44:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 21:44:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:44:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-24 21:44:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:54,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:54,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:54,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:54,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:54,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:44:54,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:54,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:54,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:54,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:54,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:55,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:55,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 21:44:55,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-09-24 21:44:55,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 21:44:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:55,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864667403] [2020-09-24 21:44:55,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:55,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:44:55,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246668312] [2020-09-24 21:44:55,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:44:55,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:55,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:44:55,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:44:55,423 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 12 states. [2020-09-24 21:44:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:59,612 INFO L93 Difference]: Finished difference Result 2358 states and 3393 transitions. [2020-09-24 21:44:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 21:44:59,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 195 [2020-09-24 21:44:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:59,631 INFO L225 Difference]: With dead ends: 2358 [2020-09-24 21:44:59,632 INFO L226 Difference]: Without dead ends: 1652 [2020-09-24 21:44:59,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:44:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2020-09-24 21:44:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1080. [2020-09-24 21:44:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2020-09-24 21:44:59,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1419 transitions. [2020-09-24 21:44:59,713 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1419 transitions. Word has length 195 [2020-09-24 21:44:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:59,714 INFO L479 AbstractCegarLoop]: Abstraction has 1080 states and 1419 transitions. [2020-09-24 21:44:59,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:44:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1419 transitions. [2020-09-24 21:44:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 21:44:59,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:59,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:59,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:44:59,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:59,730 INFO L82 PathProgramCache]: Analyzing trace with hash -779241874, now seen corresponding path program 1 times [2020-09-24 21:44:59,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:59,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842233085] [2020-09-24 21:44:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:04,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 21:45:04,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 21:45:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:45:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:45:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-24 21:45:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:04,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:04,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:45:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:05,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:05,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:05,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 21:45:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:45:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:45:06,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-09-24 21:45:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:45:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:45:06,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842233085] [2020-09-24 21:45:06,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:06,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:06,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544174800] [2020-09-24 21:45:06,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:06,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:06,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:06,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:06,354 INFO L87 Difference]: Start difference. First operand 1080 states and 1419 transitions. Second operand 9 states. [2020-09-24 21:45:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:10,446 INFO L93 Difference]: Finished difference Result 2678 states and 3653 transitions. [2020-09-24 21:45:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:45:10,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 267 [2020-09-24 21:45:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:10,460 INFO L225 Difference]: With dead ends: 2678 [2020-09-24 21:45:10,460 INFO L226 Difference]: Without dead ends: 1740 [2020-09-24 21:45:10,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:10,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2020-09-24 21:45:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1389. [2020-09-24 21:45:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2020-09-24 21:45:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1783 transitions. [2020-09-24 21:45:10,520 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1783 transitions. Word has length 267 [2020-09-24 21:45:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:10,521 INFO L479 AbstractCegarLoop]: Abstraction has 1389 states and 1783 transitions. [2020-09-24 21:45:10,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1783 transitions. [2020-09-24 21:45:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-24 21:45:10,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:10,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:10,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:10,529 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:10,530 INFO L82 PathProgramCache]: Analyzing trace with hash 176753670, now seen corresponding path program 1 times [2020-09-24 21:45:10,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:10,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261088041] [2020-09-24 21:45:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:15,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-09-24 21:45:15,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:15,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 21:45:15,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-09-24 21:45:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:15,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:15,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:15,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:45:15,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:15,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:15,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 21:45:15,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:45:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:16,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:16,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-24 21:45:16,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:45:16,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:16,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261088041] [2020-09-24 21:45:16,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:16,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:16,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361386892] [2020-09-24 21:45:16,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:16,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:16,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:16,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:16,272 INFO L87 Difference]: Start difference. First operand 1389 states and 1783 transitions. Second operand 10 states.