/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:53:50,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:53:50,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:53:50,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:53:50,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:53:50,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:53:50,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:53:50,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:53:50,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:53:50,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:53:50,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:53:50,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:53:50,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:53:50,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:53:50,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:53:50,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:53:50,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:53:50,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:53:50,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:53:50,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:53:50,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:53:50,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:53:50,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:53:50,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:53:50,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:53:50,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:53:50,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:53:50,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:53:50,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:53:50,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 23:53:50,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:53:50,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:53:50,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:53:50,947 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 23:53:50,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:53:50,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:53:50,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:53:50,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:53:50,975 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:53:50,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:53:50,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:53:50,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:53:50,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:53:50,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:53:50,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:53:50,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:53:50,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:53:50,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:53:50,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:53:50,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:53:50,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:53:50,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:53:50,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:53:50,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:53:50,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:53:50,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:53:50,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:53:50,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:53:50,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:53:50,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:53:50,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:53:50,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:53:50,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:53:50,980 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:53:51,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:53:51,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:53:51,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:53:51,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:53:51,475 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:53:51,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-24 23:53:51,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28bcea1d/297f88e3646d4e698ac4e951bdf9c74a/FLAG55b848eec [2020-09-24 23:53:52,235 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:53:52,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-24 23:53:52,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28bcea1d/297f88e3646d4e698ac4e951bdf9c74a/FLAG55b848eec [2020-09-24 23:53:52,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28bcea1d/297f88e3646d4e698ac4e951bdf9c74a [2020-09-24 23:53:52,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:53:52,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:53:52,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:53:52,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:53:52,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:53:52,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:53:52" (1/1) ... [2020-09-24 23:53:52,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e588cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:52, skipping insertion in model container [2020-09-24 23:53:52,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:53:52" (1/1) ... [2020-09-24 23:53:52,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:53:52,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:53:53,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:53:53,081 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:53:53,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:53:53,312 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:53:53,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53 WrapperNode [2020-09-24 23:53:53,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:53:53,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:53:53,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:53:53,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:53:53,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (1/1) ... [2020-09-24 23:53:53,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (1/1) ... [2020-09-24 23:53:53,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (1/1) ... [2020-09-24 23:53:53,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (1/1) ... [2020-09-24 23:53:53,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (1/1) ... [2020-09-24 23:53:53,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (1/1) ... [2020-09-24 23:53:53,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (1/1) ... [2020-09-24 23:53:53,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:53:53,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:53:53,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:53:53,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:53:53,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (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 23:53:53,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:53:53,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:53:53,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 23:53:53,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:53:53,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 23:53:53,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:53:53,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:53:53,524 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:53:53,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:53:53,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:53:53,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:53:54,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:53:54,837 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 23:53:54,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:53:54 BoogieIcfgContainer [2020-09-24 23:53:54,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:53:54,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:53:54,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:53:54,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:53:54,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:53:52" (1/3) ... [2020-09-24 23:53:54,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2f4aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:53:54, skipping insertion in model container [2020-09-24 23:53:54,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:53" (2/3) ... [2020-09-24 23:53:54,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2f4aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:53:54, skipping insertion in model container [2020-09-24 23:53:54,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:53:54" (3/3) ... [2020-09-24 23:53:54,866 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-24 23:53:54,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:53:54,892 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:53:54,911 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:53:54,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:53:54,944 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:53:54,944 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:53:54,944 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:53:54,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:53:54,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:53:54,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:53:54,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:53:54,978 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 23:53:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 23:53:55,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:53:55,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:53:55,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:53:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:53:55,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-24 23:53:55,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:53:55,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219591762] [2020-09-24 23:53:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:53:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:00,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:00,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 23:54:00,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:54:00,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 23:54:00,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 23:54:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:54:00,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 23:54:00,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:54:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:54:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:01,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:01,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:54:01,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 23:54:01,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:54:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:54:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:54:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:54:02,064 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 23:54:02,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219591762] [2020-09-24 23:54:02,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:54:02,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 23:54:02,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387113099] [2020-09-24 23:54:02,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 23:54:02,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:54:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 23:54:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:54:02,098 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 23:54:02,677 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 23:54:02,978 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-24 23:54:03,321 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-24 23:54:03,814 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-24 23:54:04,990 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-24 23:54:05,498 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-24 23:54:06,372 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-09-24 23:54:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:54:08,997 INFO L93 Difference]: Finished difference Result 1528 states and 2153 transitions. [2020-09-24 23:54:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 23:54:09,000 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 160 [2020-09-24 23:54:09,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:54:09,042 INFO L225 Difference]: With dead ends: 1528 [2020-09-24 23:54:09,042 INFO L226 Difference]: Without dead ends: 909 [2020-09-24 23:54:09,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=367, Invalid=689, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 23:54:09,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-09-24 23:54:09,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 825. [2020-09-24 23:54:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-09-24 23:54:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 978 transitions. [2020-09-24 23:54:09,170 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 978 transitions. Word has length 160 [2020-09-24 23:54:09,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:54:09,171 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 978 transitions. [2020-09-24 23:54:09,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 23:54:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 978 transitions. [2020-09-24 23:54:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 23:54:09,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:54:09,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:54:09,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:54:09,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:54:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:54:09,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1431628678, now seen corresponding path program 1 times [2020-09-24 23:54:09,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:54:09,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321733772] [2020-09-24 23:54:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:54:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:14,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:14,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-24 23:54:14,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:54:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 23:54:14,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 23:54:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 23:54:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 23:54:14,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:15,053 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-09-24 23:54:15,285 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-09-24 23:54:15,574 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-09-24 23:54:15,871 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2020-09-24 23:54:16,134 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-09-24 23:54:16,390 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-09-24 23:54:16,669 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2020-09-24 23:54:16,979 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2020-09-24 23:54:17,315 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2020-09-24 23:54:17,657 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2020-09-24 23:54:17,973 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2020-09-24 23:54:18,268 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2020-09-24 23:54:18,566 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2020-09-24 23:54:18,845 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-09-24 23:54:19,153 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-09-24 23:54:19,416 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-09-24 23:54:19,641 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2020-09-24 23:54:19,867 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-09-24 23:54:20,131 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2020-09-24 23:54:20,333 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 31 [2020-09-24 23:54:20,522 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 29 [2020-09-24 23:54:20,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:54:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:21,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:21,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:54:21,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:21,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 23:54:21,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:54:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:54:21,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:54:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:54:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 23:54:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:21,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:21,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:54:21,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 23:54:21,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:54:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:54:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:54:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 23:54:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:21,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:21,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:54:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:54:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 23:54:21,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:54:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:54:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:54:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:54:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 23:54:21,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321733772] [2020-09-24 23:54:21,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:54:21,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-24 23:54:21,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184915191] [2020-09-24 23:54:21,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-24 23:54:21,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:54:21,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-24 23:54:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 23:54:21,813 INFO L87 Difference]: Start difference. First operand 825 states and 978 transitions. Second operand 39 states. [2020-09-24 23:54:22,586 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-09-24 23:54:22,774 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-09-24 23:54:23,088 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-09-24 23:54:23,309 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-09-24 23:54:23,652 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-09-24 23:54:24,125 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-09-24 23:54:24,689 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 23:54:25,126 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-09-24 23:54:25,303 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-09-24 23:54:25,718 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-09-24 23:54:26,303 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 23:54:27,109 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 23:54:27,656 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 23:54:28,121 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 23:54:28,453 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-09-24 23:54:28,824 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 23:54:29,387 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 23:54:29,754 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-24 23:54:30,184 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 23:54:30,616 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-09-24 23:54:31,341 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 23:54:31,731 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 23:54:32,143 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-09-24 23:54:32,553 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2020-09-24 23:54:33,010 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-09-24 23:54:33,566 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-09-24 23:54:33,973 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-09-24 23:54:34,393 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2020-09-24 23:54:34,747 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-09-24 23:54:35,144 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-09-24 23:54:35,501 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-24 23:54:35,726 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-09-24 23:54:36,106 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-09-24 23:54:36,493 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-24 23:54:36,799 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-09-24 23:54:37,236 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-09-24 23:54:37,554 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-09-24 23:54:37,915 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2020-09-24 23:54:38,405 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-09-24 23:54:38,743 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-09-24 23:54:38,895 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-09-24 23:54:39,126 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-09-24 23:54:39,452 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-09-24 23:54:40,019 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-24 23:54:40,264 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-09-24 23:54:40,602 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-09-24 23:54:40,916 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-09-24 23:54:41,364 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-09-24 23:54:41,648 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-24 23:54:41,919 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-09-24 23:54:42,179 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-09-24 23:54:42,479 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-09-24 23:54:42,798 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-09-24 23:54:43,081 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-09-24 23:54:43,344 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-09-24 23:54:43,601 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-09-24 23:54:43,828 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-09-24 23:54:44,282 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-09-24 23:54:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:54:45,802 INFO L93 Difference]: Finished difference Result 2780 states and 3640 transitions. [2020-09-24 23:54:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-09-24 23:54:45,803 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 198 [2020-09-24 23:54:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:54:45,823 INFO L225 Difference]: With dead ends: 2780 [2020-09-24 23:54:45,823 INFO L226 Difference]: Without dead ends: 2043 [2020-09-24 23:54:45,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4299 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=3526, Invalid=10280, Unknown=0, NotChecked=0, Total=13806 [2020-09-24 23:54:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2020-09-24 23:54:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1746. [2020-09-24 23:54:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2020-09-24 23:54:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2143 transitions. [2020-09-24 23:54:45,960 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2143 transitions. Word has length 198 [2020-09-24 23:54:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:54:45,961 INFO L479 AbstractCegarLoop]: Abstraction has 1746 states and 2143 transitions. [2020-09-24 23:54:45,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-24 23:54:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2143 transitions. [2020-09-24 23:54:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 23:54:45,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:54:45,978 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:54:45,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:54:45,979 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:54:45,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:54:45,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1676369428, now seen corresponding path program 1 times [2020-09-24 23:54:45,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:54:45,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194287489] [2020-09-24 23:54:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:54:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking...