/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:16,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:16,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:16,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:16,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:16,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:16,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:16,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:16,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:16,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:16,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:16,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:16,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:16,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:16,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:16,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:16,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:16,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:16,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:16,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:16,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:16,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:16,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:16,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:16,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:16,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:16,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:16,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:16,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:16,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:16,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:16,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:16,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:16,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:16,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:16,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:16,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:16,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:16,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:16,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:16,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:16,279 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 [2020-09-25 12:22:16,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:16,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:16,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:16,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:16,341 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:16,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:16,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:16,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:16,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:16,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:16,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:16,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:16,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:16,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:16,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:16,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:16,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:16,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:16,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:16,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:16,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:16,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:16,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:16,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:16,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:16,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:16,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:16,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:16,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:16,348 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:22:16,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:16,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:16,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:16,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:16,849 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:16,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2020-09-25 12:22:16,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c0d99802/ef80d4235be64425b0481d046fc0ea18/FLAG7eb3376e2 [2020-09-25 12:22:17,644 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:17,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2020-09-25 12:22:17,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c0d99802/ef80d4235be64425b0481d046fc0ea18/FLAG7eb3376e2 [2020-09-25 12:22:17,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c0d99802/ef80d4235be64425b0481d046fc0ea18 [2020-09-25 12:22:17,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:17,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:17,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:17,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:17,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:17,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:17" (1/1) ... [2020-09-25 12:22:17,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e09f978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:17, skipping insertion in model container [2020-09-25 12:22:17,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:17" (1/1) ... [2020-09-25 12:22:17,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:17,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:18,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:18,509 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:18,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:18,793 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:18,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18 WrapperNode [2020-09-25 12:22:18,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:18,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:18,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:18,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:18,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (1/1) ... [2020-09-25 12:22:18,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (1/1) ... [2020-09-25 12:22:18,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (1/1) ... [2020-09-25 12:22:18,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (1/1) ... [2020-09-25 12:22:18,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (1/1) ... [2020-09-25 12:22:18,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (1/1) ... [2020-09-25 12:22:18,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (1/1) ... [2020-09-25 12:22:18,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:18,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:18,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:18,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:18,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (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 [2020-09-25 12:22:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:18,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:20,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:20,425 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:20,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:20 BoogieIcfgContainer [2020-09-25 12:22:20,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:20,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:20,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:20,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:20,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:17" (1/3) ... [2020-09-25 12:22:20,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bfb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:20, skipping insertion in model container [2020-09-25 12:22:20,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:18" (2/3) ... [2020-09-25 12:22:20,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bfb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:20, skipping insertion in model container [2020-09-25 12:22:20,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:20" (3/3) ... [2020-09-25 12:22:20,455 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label49.c [2020-09-25 12:22:20,469 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:20,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:20,510 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:20,552 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:20,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:20,553 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:20,553 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:20,554 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:20,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:20,554 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:20,554 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 12:22:20,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:20,641 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] [2020-09-25 12:22:20,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash 2140935381, now seen corresponding path program 1 times [2020-09-25 12:22:20,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:20,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907351763] [2020-09-25 12:22:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:21,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:25,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 12:22:25,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 12:22:25,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:25,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:22:25,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 12:22:25,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:22:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:26,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:26,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:22:26,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:26,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:22:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:26,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907351763] [2020-09-25 12:22:26,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:26,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:22:26,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519209961] [2020-09-25 12:22:26,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:26,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:26,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:26,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:26,411 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 12:22:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:28,944 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 12:22:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:22:28,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 12:22:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:28,982 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 12:22:28,983 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 12:22:28,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 12:22:29,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 12:22:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:22:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 12:22:29,103 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 135 [2020-09-25 12:22:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:29,104 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 12:22:29,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:29,104 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 12:22:29,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 12:22:29,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:29,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:29,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:29,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:29,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1149676025, now seen corresponding path program 1 times [2020-09-25 12:22:29,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:29,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13716309] [2020-09-25 12:22:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:32,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:34,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 12:22:34,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 12:22:34,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:34,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:22:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:22:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 12:22:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:22:35,000 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-09-25 12:22:35,148 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-09-25 12:22:35,329 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-09-25 12:22:35,468 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-09-25 12:22:35,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:35,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:22:35,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:22:35,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:22:35,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 12:22:35,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:22:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:22:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:36,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13716309] [2020-09-25 12:22:36,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:36,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 12:22:36,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394437616] [2020-09-25 12:22:36,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 12:22:36,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:36,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 12:22:36,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:22:36,255 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 20 states. [2020-09-25 12:22:37,221 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 12:22:37,453 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 12:22:37,775 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 12:22:38,063 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 12:22:38,386 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 12:22:38,992 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 12:22:39,379 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 12:22:39,554 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-09-25 12:22:40,337 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 12:22:41,095 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 12:22:41,415 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 12:22:41,794 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 12:22:42,130 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 12:22:42,323 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-09-25 12:22:42,881 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 12:22:43,543 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 12:22:43,984 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 12:22:44,589 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 12:22:45,304 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 12:22:46,017 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 12:22:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:47,089 INFO L93 Difference]: Finished difference Result 1966 states and 2590 transitions. [2020-09-25 12:22:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 12:22:47,090 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 157 [2020-09-25 12:22:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:47,099 INFO L225 Difference]: With dead ends: 1966 [2020-09-25 12:22:47,100 INFO L226 Difference]: Without dead ends: 1387 [2020-09-25 12:22:47,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=872, Invalid=2208, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 12:22:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-09-25 12:22:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1280. [2020-09-25 12:22:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-09-25 12:22:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1531 transitions. [2020-09-25 12:22:47,161 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1531 transitions. Word has length 157 [2020-09-25 12:22:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:47,162 INFO L479 AbstractCegarLoop]: Abstraction has 1280 states and 1531 transitions. [2020-09-25 12:22:47,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 12:22:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1531 transitions. [2020-09-25 12:22:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 12:22:47,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:47,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:47,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:47,169 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:47,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:47,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2074464918, now seen corresponding path program 1 times [2020-09-25 12:22:47,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:47,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235496344] [2020-09-25 12:22:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:47,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:49,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:52,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 12:22:52,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:22:52,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:52,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 12:22:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:22:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:52,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:52,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:52,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:52,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:52,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:52,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:52,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:52,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:22:52,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:22:52,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:52,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:52,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:52,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:22:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:22:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:52,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235496344] [2020-09-25 12:22:52,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:52,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:52,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220048502] [2020-09-25 12:22:52,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:52,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:52,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:52,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:52,503 INFO L87 Difference]: Start difference. First operand 1280 states and 1531 transitions. Second operand 5 states. [2020-09-25 12:22:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:55,061 INFO L93 Difference]: Finished difference Result 3243 states and 4024 transitions. [2020-09-25 12:22:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:55,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 12:22:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:55,082 INFO L225 Difference]: With dead ends: 3243 [2020-09-25 12:22:55,082 INFO L226 Difference]: Without dead ends: 1987 [2020-09-25 12:22:55,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2020-09-25 12:22:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1584. [2020-09-25 12:22:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-09-25 12:22:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 1936 transitions. [2020-09-25 12:22:55,175 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 1936 transitions. Word has length 164 [2020-09-25 12:22:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:55,176 INFO L479 AbstractCegarLoop]: Abstraction has 1584 states and 1936 transitions. [2020-09-25 12:22:55,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 1936 transitions. [2020-09-25 12:22:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 12:22:55,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:55,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:55,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:55,187 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:55,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:55,187 INFO L82 PathProgramCache]: Analyzing trace with hash -613380079, now seen corresponding path program 1 times [2020-09-25 12:22:55,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:55,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371850871] [2020-09-25 12:22:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:00,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 12:23:00,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:23:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:23:00,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:00,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:23:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 12:23:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 12:23:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:23:00,719 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-09-25 12:23:00,997 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 39 [2020-09-25 12:23:01,172 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 37 [2020-09-25 12:23:01,357 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 35 [2020-09-25 12:23:01,513 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 34 [2020-09-25 12:23:01,673 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 31 [2020-09-25 12:23:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:01,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:01,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:01,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:01,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:01,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:23:01,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 12:23:01,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:01,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:23:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:02,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371850871] [2020-09-25 12:23:02,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:02,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:23:02,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477708905] [2020-09-25 12:23:02,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:23:02,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:02,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:23:02,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:23:02,065 INFO L87 Difference]: Start difference. First operand 1584 states and 1936 transitions. Second operand 15 states. [2020-09-25 12:23:03,311 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 12:23:03,499 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-25 12:23:04,224 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-09-25 12:23:05,111 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2020-09-25 12:23:05,495 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2020-09-25 12:23:05,686 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-09-25 12:23:06,047 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2020-09-25 12:23:06,782 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88