/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:42:03,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:42:03,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:42:03,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:42:03,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:42:03,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:42:03,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:42:03,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:42:03,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:42:03,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:42:03,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:42:03,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:42:03,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:42:03,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:42:03,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:42:03,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:42:03,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:42:03,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:42:03,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:42:03,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:42:03,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:42:03,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:42:03,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:42:03,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:42:03,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:42:03,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:42:03,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:42:03,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:42:03,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:42:03,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:42:03,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:42:03,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:42:03,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:42:03,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:42:03,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:42:03,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:42:03,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:42:03,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:42:03,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:42:03,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:42:03,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:42:03,335 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 22:42:03,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:42:03,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:42:03,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:42:03,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:42:03,387 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:42:03,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:42:03,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:42:03,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:42:03,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:42:03,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:42:03,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:42:03,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:42:03,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:42:03,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:42:03,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:42:03,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:42:03,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:42:03,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:42:03,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:42:03,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:42:03,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:42:03,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:42:03,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:42:03,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:42:03,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:42:03,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:42:03,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:42:03,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:42:03,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:42:03,392 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:42:03,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:42:03,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:42:03,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:42:03,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:42:03,857 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:42:03,858 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-09-24 22:42:03,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22e410b31/3b6828a2e7c24dac8b88f98b74108c88/FLAG70f4e9532 [2020-09-24 22:42:04,496 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:42:04,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-09-24 22:42:04,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22e410b31/3b6828a2e7c24dac8b88f98b74108c88/FLAG70f4e9532 [2020-09-24 22:42:04,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22e410b31/3b6828a2e7c24dac8b88f98b74108c88 [2020-09-24 22:42:04,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:42:04,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:42:04,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:42:04,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:42:04,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:42:04,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795bb0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04, skipping insertion in model container [2020-09-24 22:42:04,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:42:04,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:42:05,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:42:05,227 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:42:05,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:42:05,284 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:42:05,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05 WrapperNode [2020-09-24 22:42:05,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:42:05,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:42:05,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:42:05,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:42:05,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (1/1) ... [2020-09-24 22:42:05,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (1/1) ... [2020-09-24 22:42:05,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (1/1) ... [2020-09-24 22:42:05,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (1/1) ... [2020-09-24 22:42:05,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (1/1) ... [2020-09-24 22:42:05,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (1/1) ... [2020-09-24 22:42:05,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (1/1) ... [2020-09-24 22:42:05,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:42:05,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:42:05,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:42:05,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:42:05,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (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 22:42:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:42:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:42:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:42:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:42:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 22:42:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:42:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 22:42:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:42:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:42:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:42:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:42:05,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:42:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:42:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:42:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 22:42:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:42:05,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:42:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:42:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 22:42:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:42:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:42:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:42:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:42:05,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:42:05,858 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:42:05,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:05 BoogieIcfgContainer [2020-09-24 22:42:05,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:42:05,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:42:05,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:42:05,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:42:05,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:42:04" (1/3) ... [2020-09-24 22:42:05,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b316dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:05, skipping insertion in model container [2020-09-24 22:42:05,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:05" (2/3) ... [2020-09-24 22:42:05,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b316dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:05, skipping insertion in model container [2020-09-24 22:42:05,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:05" (3/3) ... [2020-09-24 22:42:05,873 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-09-24 22:42:05,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:42:05,894 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:42:05,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:42:05,944 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:42:05,944 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:42:05,944 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:42:05,944 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:42:05,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:42:05,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:42:05,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:42:05,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:42:05,970 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-09-24 22:42:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 22:42:05,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:05,980 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:42:05,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:05,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:05,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1228919024, now seen corresponding path program 1 times [2020-09-24 22:42:06,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:06,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872621508] [2020-09-24 22:42:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:06,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:06,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 22:42:06,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:06,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-09-24 22:42:06,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:42:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 22:42:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:42:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:42:07,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:07,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:07,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:07,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:07,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:42:07,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:07,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:07,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:07,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:07,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:07,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:07,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:07,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:07,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 22:42:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:07,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:07,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:07,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:07,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:42:07,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:07,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:42:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:07,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:07,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:07,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:07,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:42:07,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872621508] [2020-09-24 22:42:07,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:07,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:42:07,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41908381] [2020-09-24 22:42:07,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:42:07,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:07,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:42:07,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:42:07,134 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 10 states. [2020-09-24 22:42:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:08,096 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2020-09-24 22:42:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:42:08,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-24 22:42:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:08,125 INFO L225 Difference]: With dead ends: 221 [2020-09-24 22:42:08,126 INFO L226 Difference]: Without dead ends: 138 [2020-09-24 22:42:08,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:42:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-24 22:42:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2020-09-24 22:42:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-24 22:42:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-09-24 22:42:08,256 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 40 [2020-09-24 22:42:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:08,257 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-09-24 22:42:08,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:42:08,258 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-09-24 22:42:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:42:08,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:08,261 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:42:08,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:42:08,262 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:08,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2013393660, now seen corresponding path program 1 times [2020-09-24 22:42:08,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:08,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519627951] [2020-09-24 22:42:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:42:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:42:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2312 [2020-09-24 22:42:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:42:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 22:42:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 22:42:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:42:10,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:10,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:10,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:10,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:10,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:10,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 22:42:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:10,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:10,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:10,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:42:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:10,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:42:10,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:42:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:10,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 22:42:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:10,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:42:10,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:42:10,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:42:10,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519627951] [2020-09-24 22:42:10,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:10,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 22:42:10,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971574074] [2020-09-24 22:42:10,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:42:10,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:10,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:42:10,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:42:10,885 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 13 states. [2020-09-24 22:42:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:11,699 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-24 22:42:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:42:11,700 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-24 22:42:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:11,702 INFO L225 Difference]: With dead ends: 128 [2020-09-24 22:42:11,702 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 22:42:11,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-09-24 22:42:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 22:42:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-24 22:42:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 22:42:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2020-09-24 22:42:11,720 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 52 [2020-09-24 22:42:11,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:11,720 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2020-09-24 22:42:11,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:42:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2020-09-24 22:42:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 22:42:11,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:11,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-24 22:42:11,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:42:11,724 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:11,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:11,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1709597342, now seen corresponding path program 1 times [2020-09-24 22:42:11,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:11,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221881946] [2020-09-24 22:42:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:11,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:14,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:14,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:42:14,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:42:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3059 [2020-09-24 22:42:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:42:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 22:42:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:42:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:14,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:14,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:14,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:14,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:14,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:14,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:14,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:14,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:14,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 22:42:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:14,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:14,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:14,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:14,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:14,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:42:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:14,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:14,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:14,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:14,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:14,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:42:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:15,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:15,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:15,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:15,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:15,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:42:15,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:15,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:15,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 22:42:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:15,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:15,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:42:15,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:15,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 22:42:15,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221881946] [2020-09-24 22:42:15,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:15,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:42:15,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680109552] [2020-09-24 22:42:15,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:42:15,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:15,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:42:15,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:42:15,066 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 13 states. [2020-09-24 22:42:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:16,095 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2020-09-24 22:42:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:42:16,096 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-09-24 22:42:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:16,099 INFO L225 Difference]: With dead ends: 189 [2020-09-24 22:42:16,099 INFO L226 Difference]: Without dead ends: 187 [2020-09-24 22:42:16,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-09-24 22:42:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-24 22:42:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 151. [2020-09-24 22:42:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 22:42:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2020-09-24 22:42:16,123 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 67 [2020-09-24 22:42:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:16,125 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2020-09-24 22:42:16,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:42:16,126 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2020-09-24 22:42:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 22:42:16,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:16,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-24 22:42:16,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:42:16,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:16,134 INFO L82 PathProgramCache]: Analyzing trace with hash 587834366, now seen corresponding path program 1 times [2020-09-24 22:42:16,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:16,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602862273] [2020-09-24 22:42:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:21,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:42:21,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:21,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 22:42:21,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:42:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 22:42:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:42:21,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:21,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:21,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:21,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:21,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:21,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:21,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:21,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:21,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 22:42:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:21,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:21,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:21,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:21,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:21,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:42:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:21,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:21,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:21,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:42:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:21,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:21,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:42:21,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:21,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 22:42:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:21,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:21,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:42:21,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:21,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 22:42:21,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602862273] [2020-09-24 22:42:21,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:21,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:42:21,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019488240] [2020-09-24 22:42:21,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:42:21,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:21,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:42:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:42:21,477 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand 14 states. [2020-09-24 22:42:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:22,831 INFO L93 Difference]: Finished difference Result 195 states and 218 transitions. [2020-09-24 22:42:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:42:22,831 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-09-24 22:42:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:22,837 INFO L225 Difference]: With dead ends: 195 [2020-09-24 22:42:22,837 INFO L226 Difference]: Without dead ends: 193 [2020-09-24 22:42:22,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2020-09-24 22:42:22,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-24 22:42:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 155. [2020-09-24 22:42:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 22:42:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-09-24 22:42:22,878 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 67 [2020-09-24 22:42:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:22,879 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-09-24 22:42:22,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:42:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-09-24 22:42:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 22:42:22,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:22,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:22,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:42:22,886 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash 687369648, now seen corresponding path program 1 times [2020-09-24 22:42:22,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:22,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546564586] [2020-09-24 22:42:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:27,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:27,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 22:42:27,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:27,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:42:27,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 22:42:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 22:42:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:42:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:28,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:28,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:28,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:28,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:28,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:28,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:28,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:28,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:28,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:28,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:28,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 22:42:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:28,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:28,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:28,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:28,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:28,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:42:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:28,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:28,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:28,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:28,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:28,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:42:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:28,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:28,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:42:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:28,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 22:42:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:28,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:28,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:42:28,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:28,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 22:42:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:28,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:28,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:28,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 22:42:28,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:42:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:42:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:42:29,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546564586] [2020-09-24 22:42:29,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:29,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 22:42:29,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555869202] [2020-09-24 22:42:29,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 22:42:29,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:29,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 22:42:29,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-09-24 22:42:29,079 INFO L87 Difference]: Start difference. First operand 155 states and 170 transitions. Second operand 29 states. [2020-09-24 22:42:30,486 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-09-24 22:42:30,911 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-09-24 22:42:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:32,970 INFO L93 Difference]: Finished difference Result 211 states and 235 transitions. [2020-09-24 22:42:32,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 22:42:32,971 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 79 [2020-09-24 22:42:32,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:32,973 INFO L225 Difference]: With dead ends: 211 [2020-09-24 22:42:32,974 INFO L226 Difference]: Without dead ends: 195 [2020-09-24 22:42:32,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=485, Invalid=3055, Unknown=0, NotChecked=0, Total=3540 [2020-09-24 22:42:32,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-24 22:42:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 157. [2020-09-24 22:42:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 22:42:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2020-09-24 22:42:32,994 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 79 [2020-09-24 22:42:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:32,995 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2020-09-24 22:42:32,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 22:42:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2020-09-24 22:42:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 22:42:32,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:32,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:32,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:42:32,997 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:32,998 INFO L82 PathProgramCache]: Analyzing trace with hash -10182896, now seen corresponding path program 1 times [2020-09-24 22:42:32,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:32,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159868233] [2020-09-24 22:42:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:38,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:38,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 22:42:38,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:42:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 22:42:38,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 22:42:38,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 22:42:38,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:42:38,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:38,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:38,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:38,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:38,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:38,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:38,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 22:42:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:38,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:38,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:38,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:38,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:42:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:38,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:38,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:38,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 22:42:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:38,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:38,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:38,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:42:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:38,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:38,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 22:42:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:38,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:38,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:38,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:38,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:42:38,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:42:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 22:42:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:38,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:38,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 22:42:38,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:42:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:42:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:42:39,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159868233] [2020-09-24 22:42:39,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:39,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-24 22:42:39,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047517491] [2020-09-24 22:42:39,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-24 22:42:39,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:39,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-24 22:42:39,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2020-09-24 22:42:39,216 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 28 states. [2020-09-24 22:42:40,423 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-09-24 22:42:40,607 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-09-24 22:42:40,786 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-09-24 22:42:40,983 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-09-24 22:42:41,156 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-09-24 22:42:41,398 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-09-24 22:42:42,464 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-09-24 22:42:42,805 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-24 22:42:43,004 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-24 22:42:43,171 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-24 22:42:43,368 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-09-24 22:42:43,568 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-24 22:42:43,753 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-24 22:42:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:44,537 INFO L93 Difference]: Finished difference Result 211 states and 234 transitions. [2020-09-24 22:42:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 22:42:44,538 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 79 [2020-09-24 22:42:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:44,540 INFO L225 Difference]: With dead ends: 211 [2020-09-24 22:42:44,540 INFO L226 Difference]: Without dead ends: 195 [2020-09-24 22:42:44,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=500, Invalid=2922, Unknown=0, NotChecked=0, Total=3422 [2020-09-24 22:42:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-24 22:42:44,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 159. [2020-09-24 22:42:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 22:42:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 176 transitions. [2020-09-24 22:42:44,556 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 176 transitions. Word has length 79 [2020-09-24 22:42:44,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:44,557 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 176 transitions. [2020-09-24 22:42:44,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-24 22:42:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 176 transitions. [2020-09-24 22:42:44,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 22:42:44,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:44,560 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 22:42:44,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:42:44,560 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:44,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1532332446, now seen corresponding path program 2 times [2020-09-24 22:42:44,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:44,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082046399] [2020-09-24 22:42:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:44,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:49,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:49,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 22:42:49,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:42:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:42:49,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-09-24 22:42:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 22:42:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 22:42:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:50,318 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-09-24 22:42:50,561 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-09-24 22:42:50,810 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 38 [2020-09-24 22:42:51,039 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 29 [2020-09-24 22:42:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:51,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:51,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:51,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:51,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:42:51,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:51,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:51,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:51,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:51,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 22:42:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:51,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:51,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:51,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:51,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:51,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:51,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:51,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0