/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:13:32,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:13:32,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:13:32,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:13:32,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:13:32,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:13:32,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:13:32,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:13:32,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:13:32,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:13:32,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:13:32,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:13:32,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:13:32,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:13:32,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:13:32,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:13:32,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:13:32,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:13:32,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:13:32,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:13:32,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:13:32,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:13:32,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:13:32,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:13:32,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:13:32,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:13:32,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:13:32,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:13:32,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:13:32,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:13:32,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:13:32,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:13:32,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:13:32,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:13:32,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:13:32,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:13:32,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:13:32,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:13:32,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:13:32,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:13:32,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:13:32,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:13:32,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:13:32,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:13:32,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:13:32,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:13:32,934 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:13:32,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:13:32,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:13:32,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:13:32,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:13:32,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:13:32,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:13:32,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:13:32,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:13:32,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:13:32,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:13:32,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:13:32,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:13:32,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:13:32,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:13:32,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:13:32,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:13:32,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:32,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:13:32,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:13:32,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:13:32,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:13:32,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:13:32,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:13:32,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:13:32,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:13:33,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:13:33,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:13:33,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:13:33,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:13:33,477 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:13:33,478 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 12:13:33,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f2aa2c4/e8c953525b154abf9d7c68fe3c95a428/FLAG5ff27b1d1 [2020-09-25 12:13:34,106 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:13:34,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 12:13:34,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f2aa2c4/e8c953525b154abf9d7c68fe3c95a428/FLAG5ff27b1d1 [2020-09-25 12:13:34,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f2aa2c4/e8c953525b154abf9d7c68fe3c95a428 [2020-09-25 12:13:34,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:13:34,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:13:34,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:34,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:13:34,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:13:34,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c38a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34, skipping insertion in model container [2020-09-25 12:13:34,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:13:34,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:13:34,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:34,742 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:13:34,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:34,777 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:13:34,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34 WrapperNode [2020-09-25 12:13:34,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:34,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:13:34,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:13:34,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:13:34,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:13:34,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:13:34,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:13:34,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:13:34,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:34,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:13:34,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:13:34,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-25 12:13:34,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:13:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:13:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:13:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-25 12:13:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:13:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:13:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:13:35,219 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:13:35,220 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:13:35,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:35 BoogieIcfgContainer [2020-09-25 12:13:35,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:13:35,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:13:35,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:13:35,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:13:35,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:13:34" (1/3) ... [2020-09-25 12:13:35,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf96b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:35, skipping insertion in model container [2020-09-25 12:13:35,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34" (2/3) ... [2020-09-25 12:13:35,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf96b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:35, skipping insertion in model container [2020-09-25 12:13:35,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:35" (3/3) ... [2020-09-25 12:13:35,234 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-09-25 12:13:35,245 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:13:35,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:13:35,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:13:35,303 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:13:35,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:13:35,304 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:13:35,304 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:13:35,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:13:35,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:13:35,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:13:35,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:13:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 12:13:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 12:13:35,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:35,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:35,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:35,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-25 12:13:35,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:35,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065009059] [2020-09-25 12:13:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:35,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:35,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:13:35,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 12:13:35,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:35,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:13:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:13:35,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:13:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:35,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:35,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:35,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:35,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:35,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:35,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:35,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:35,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:35,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:35,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 12:13:35,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:35,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:35,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:35,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:35,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:13:35,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065009059] [2020-09-25 12:13:35,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:35,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:13:35,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913123393] [2020-09-25 12:13:35,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:13:35,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:35,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:13:35,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:13:35,908 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-25 12:13:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:36,098 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-25 12:13:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:13:36,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 12:13:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:36,114 INFO L225 Difference]: With dead ends: 59 [2020-09-25 12:13:36,115 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 12:13:36,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:13:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 12:13:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-25 12:13:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 12:13:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-09-25 12:13:36,176 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2020-09-25 12:13:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:36,177 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-09-25 12:13:36,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:13:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-09-25 12:13:36,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 12:13:36,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:36,181 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] [2020-09-25 12:13:36,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:13:36,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:36,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:36,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-25 12:13:36,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:36,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736755294] [2020-09-25 12:13:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:36,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 12:13:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 12:13:36,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:36,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 12:13:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:13:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:36,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:36,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:36,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:36,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:36,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:36,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:13:36,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:36,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 12:13:36,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:36,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:13:36,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:36,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:36,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:13:36,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:36,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:36,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:13:36,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736755294] [2020-09-25 12:13:36,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:36,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:13:36,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859334536] [2020-09-25 12:13:36,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:13:36,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:36,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:13:36,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:13:36,780 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-09-25 12:13:37,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:37,023 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:13:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:13:37,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 12:13:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:37,026 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:13:37,026 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:13:37,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:13:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:13:37,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:13:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:13:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-09-25 12:13:37,038 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2020-09-25 12:13:37,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:37,038 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-09-25 12:13:37,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:13:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-09-25 12:13:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 12:13:37,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:37,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-25 12:13:37,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:13:37,042 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:37,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2094172607, now seen corresponding path program 1 times [2020-09-25 12:13:37,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:37,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313398960] [2020-09-25 12:13:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:37,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:13:37,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:13:37,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-09-25 12:13:37,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:13:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:13:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 12:13:37,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:38,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:38,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:38,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:38,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:38,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:38,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:38,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:38,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 12:13:38,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:13:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-09-25 12:13:38,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:38,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:13:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:13:38,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:38,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:13:38,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:38,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:38,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:38,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:13:38,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:38,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:13:38,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313398960] [2020-09-25 12:13:38,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:38,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:13:38,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108398038] [2020-09-25 12:13:38,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:13:38,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:38,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:13:38,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:13:38,697 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 8 states. [2020-09-25 12:13:38,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:38,904 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-09-25 12:13:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:13:38,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-25 12:13:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:38,907 INFO L225 Difference]: With dead ends: 61 [2020-09-25 12:13:38,907 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 12:13:38,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:13:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 12:13:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-09-25 12:13:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:13:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2020-09-25 12:13:38,920 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 43 [2020-09-25 12:13:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:38,921 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2020-09-25 12:13:38,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:13:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-09-25 12:13:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:13:38,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:38,924 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-09-25 12:13:38,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:13:38,925 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:38,925 INFO L82 PathProgramCache]: Analyzing trace with hash 43957023, now seen corresponding path program 1 times [2020-09-25 12:13:38,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:38,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270863649] [2020-09-25 12:13:38,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:38,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:43,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:13:43,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:13:43,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:13:43,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:43,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:13:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 12:13:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:13:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:43,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:43,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:43,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:43,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 12:13:46,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:13:46,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2326 [2020-09-25 12:13:46,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:13:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 12:13:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:13:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:46,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:13:46,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:13:46,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:46,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 12:13:46,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:13:46,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:13:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:13:46,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 12:13:46,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:13:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:13:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:46,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:13:46,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:13:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 12:13:46,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270863649] [2020-09-25 12:13:46,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:46,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:13:46,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639328499] [2020-09-25 12:13:46,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:13:46,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:46,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:13:46,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:13:46,670 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 9 states. [2020-09-25 12:13:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:46,939 INFO L93 Difference]: Finished difference Result 95 states and 148 transitions. [2020-09-25 12:13:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:13:46,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-09-25 12:13:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:46,949 INFO L225 Difference]: With dead ends: 95 [2020-09-25 12:13:46,949 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 12:13:46,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:13:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 12:13:46,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-09-25 12:13:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:13:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 12:13:46,982 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 63 [2020-09-25 12:13:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:46,985 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 12:13:46,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:13:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 12:13:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 12:13:46,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:46,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-09-25 12:13:46,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:13:46,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:46,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:46,996 INFO L82 PathProgramCache]: Analyzing trace with hash -301529650, now seen corresponding path program 2 times [2020-09-25 12:13:46,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:46,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996180084] [2020-09-25 12:13:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:13:51,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:13:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4404 [2020-09-25 12:13:51,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 12:13:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:13:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:13:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:51,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:51,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:51,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:52,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:13:52,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:13:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-09-25 12:13:52,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:52,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 12:13:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:13:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:13:52,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:52,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:52,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:13:52,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:52,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:52,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:52,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:52,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:13:52,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:13:52,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:52,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:13:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:52,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:52,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:52,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:52,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:13:52,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:52,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:13:52,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996180084] [2020-09-25 12:13:52,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:52,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:13:52,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351580307] [2020-09-25 12:13:52,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:13:52,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:52,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:13:52,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:13:52,456 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 8 states. [2020-09-25 12:13:52,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:52,623 INFO L93 Difference]: Finished difference Result 98 states and 149 transitions. [2020-09-25 12:13:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:13:52,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-25 12:13:52,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:52,626 INFO L225 Difference]: With dead ends: 98 [2020-09-25 12:13:52,626 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 12:13:52,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:13:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 12:13:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 12:13:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 12:13:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-09-25 12:13:52,650 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 53 [2020-09-25 12:13:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:52,651 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-09-25 12:13:52,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:13:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-09-25 12:13:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 12:13:52,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:52,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-09-25 12:13:52,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:13:52,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:52,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 3 times [2020-09-25 12:13:52,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:52,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330461939] [2020-09-25 12:13:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:52,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:52,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:52,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:13:52,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 12:13:52,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:52,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:13:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 12:13:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:13:52,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:52,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:52,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:52,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:52,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:52,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:13:53,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 12:13:53,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:13:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:13:53,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:13:53,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:13:53,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:13:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:53,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:13:53,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 12:13:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:53,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:13:53,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:13:53,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330461939] [2020-09-25 12:13:53,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:53,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:13:53,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085232823] [2020-09-25 12:13:53,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:13:53,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:53,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:13:53,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:13:53,430 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand 12 states. [2020-09-25 12:13:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:53,787 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2020-09-25 12:13:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:13:53,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 12:13:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:53,792 INFO L225 Difference]: With dead ends: 80 [2020-09-25 12:13:53,795 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 12:13:53,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-09-25 12:13:53,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 12:13:53,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-25 12:13:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 12:13:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2020-09-25 12:13:53,812 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 53 [2020-09-25 12:13:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:53,813 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2020-09-25 12:13:53,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:13:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2020-09-25 12:13:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:13:53,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:53,814 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-09-25 12:13:53,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:13:53,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:53,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1096450289, now seen corresponding path program 4 times [2020-09-25 12:13:53,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:53,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954685591] [2020-09-25 12:13:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:54,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:13:54,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 12:13:54,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:54,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:13:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 12:13:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:13:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:13:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:54,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:54,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:54,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:54,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:54,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:54,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:13:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 12:13:54,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 12:13:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:54,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:13:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 12:13:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:13:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:54,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:13:54,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:54,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 12:13:54,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:54,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:13:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:13:54,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:54,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:54,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:13:54,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:13:54,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:54,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:13:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:13:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:54,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:54,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:13:54,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:54,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 12:13:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:54,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:54,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:13:54,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:54,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:54,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954685591] [2020-09-25 12:13:54,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:54,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:13:54,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545126366] [2020-09-25 12:13:54,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:13:54,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:13:54,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:13:54,777 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand 12 states. [2020-09-25 12:13:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:55,122 INFO L93 Difference]: Finished difference Result 96 states and 141 transitions. [2020-09-25 12:13:55,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:13:55,124 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-25 12:13:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:55,127 INFO L225 Difference]: With dead ends: 96 [2020-09-25 12:13:55,127 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 12:13:55,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-09-25 12:13:55,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 12:13:55,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2020-09-25 12:13:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 12:13:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2020-09-25 12:13:55,153 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 63 [2020-09-25 12:13:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:55,154 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2020-09-25 12:13:55,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:13:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2020-09-25 12:13:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:13:55,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:55,158 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-09-25 12:13:55,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:13:55,158 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:55,158 INFO L82 PathProgramCache]: Analyzing trace with hash 358541405, now seen corresponding path program 5 times [2020-09-25 12:13:55,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:55,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888674137] [2020-09-25 12:13:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:00,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:14:00,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:14:00,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:00,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:14:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 12:14:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 12:14:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:00,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:00,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:00,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:00,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:00,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:00,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:00,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:00,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:01,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 12:14:01,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-09-25 12:14:01,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:01,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:14:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 12:14:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 12:14:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:01,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:01,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:14:01,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:01,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:14:01,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:01,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:14:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:01,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:02,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:14:02,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:02,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 12:14:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:14:02,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:02,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 12:14:02,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:14:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:02,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:02,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:14:02,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:02,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 12:14:02,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888674137] [2020-09-25 12:14:02,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:02,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:14:02,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916232854] [2020-09-25 12:14:02,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:14:02,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:02,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:14:02,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:14:02,206 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand 8 states. [2020-09-25 12:14:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:02,363 INFO L93 Difference]: Finished difference Result 139 states and 228 transitions. [2020-09-25 12:14:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:14:02,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 12:14:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:02,365 INFO L225 Difference]: With dead ends: 139 [2020-09-25 12:14:02,366 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 12:14:02,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:14:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 12:14:02,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2020-09-25 12:14:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 12:14:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2020-09-25 12:14:02,396 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 63 [2020-09-25 12:14:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:02,397 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2020-09-25 12:14:02,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:14:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2020-09-25 12:14:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 12:14:02,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:02,400 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:02,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:14:02,401 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 6 times [2020-09-25 12:14:02,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:02,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584771527] [2020-09-25 12:14:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 12:14:06,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4188 [2020-09-25 12:14:06,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 12:14:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:14:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:06,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:06,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 12:14:06,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 12:14:06,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 12:14:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:14:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 12:14:07,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 12:14:07,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:14:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 12:14:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:14:07,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 12:14:07,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:14:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:14:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:14:07,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:14:07,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:14:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:07,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:14:07,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:07,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 12:14:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:07,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:14:07,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:07,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:14:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:14:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:14:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:14:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:14:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:07,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:14:07,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 47 proven. 47 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 12:14:07,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584771527] [2020-09-25 12:14:07,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:07,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:14:07,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253744287] [2020-09-25 12:14:07,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:14:07,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:07,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:14:07,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:14:07,607 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand 14 states. [2020-09-25 12:14:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:07,937 INFO L93 Difference]: Finished difference Result 122 states and 174 transitions. [2020-09-25 12:14:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:14:07,941 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-09-25 12:14:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:07,942 INFO L225 Difference]: With dead ends: 122 [2020-09-25 12:14:07,942 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:14:07,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:14:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:14:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:14:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:14:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:14:07,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2020-09-25 12:14:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:07,947 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:14:07,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:14:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:14:07,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:14:07,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:14:07,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:14:08,379 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 12:14:08,379 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:14:08,379 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:14:08,379 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:14:08,380 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:14:08,380 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:14:08,380 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-09-25 12:14:08,380 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (<= |ackermann_#in~m| ackermann_~m) (= ackermann_~n |ackermann_#in~n|) (or (<= (+ |ackermann_#in~m| 1) 0) (<= 1 |ackermann_#in~m|)) (<= ackermann_~m |ackermann_#in~m|)) [2020-09-25 12:14:08,380 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-09-25 12:14:08,380 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 12:14:08,381 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~m| ackermann_~m) (or (<= (+ |ackermann_#in~m| 1) 0) (<= 1 |ackermann_#in~m|)) (<= ackermann_~m |ackermann_#in~m|)) [2020-09-25 12:14:08,381 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (and (<= 2 |ackermann_#t~ret1|) (<= 1 |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~m| ackermann_~m) (<= ackermann_~m |ackermann_#in~m|)) [2020-09-25 12:14:08,381 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 12:14:08,381 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 12:14:08,381 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 12:14:08,381 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 12:14:08,381 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 12:14:08,382 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 12:14:08,382 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 12:14:08,382 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 12:14:08,382 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-25 12:14:08,382 INFO L268 CegarLoopResult]: For program point L22-6(line 22) no Hoare annotation was computed. [2020-09-25 12:14:08,382 INFO L268 CegarLoopResult]: For program point L15(lines 15 23) no Hoare annotation was computed. [2020-09-25 12:14:08,382 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-09-25 12:14:08,382 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 12:14:08,383 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 12:14:08,384 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 12:14:08,384 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 12:14:08,384 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 12:14:08,384 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 12:14:08,385 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-09-25 12:14:08,385 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-09-25 12:14:08,385 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 12:14:08,385 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 12:14:08,385 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-09-25 12:14:08,385 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 12:14:08,386 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 12:14:08,386 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 12:14:08,386 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 12:14:08,386 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-09-25 12:14:08,386 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-09-25 12:14:08,386 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-09-25 12:14:08,386 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-25 12:14:08,387 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-09-25 12:14:08,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:14:08 BoogieIcfgContainer [2020-09-25 12:14:08,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:14:08,400 INFO L168 Benchmark]: Toolchain (without parser) took 33923.89 ms. Allocated memory was 137.9 MB in the beginning and 408.4 MB in the end (delta: 270.5 MB). Free memory was 100.7 MB in the beginning and 358.2 MB in the end (delta: -257.4 MB). Peak memory consumption was 276.6 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:08,401 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:14:08,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.64 ms. Allocated memory is still 137.9 MB. Free memory was 100.1 MB in the beginning and 90.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:08,403 INFO L168 Benchmark]: Boogie Preprocessor took 130.84 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 90.7 MB in the beginning and 178.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:08,408 INFO L168 Benchmark]: RCFGBuilder took 315.00 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 163.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:08,409 INFO L168 Benchmark]: TraceAbstraction took 33169.80 ms. Allocated memory was 199.8 MB in the beginning and 408.4 MB in the end (delta: 208.7 MB). Free memory was 163.3 MB in the beginning and 358.2 MB in the end (delta: -194.8 MB). Peak memory consumption was 277.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:08,422 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.64 ms. Allocated memory is still 137.9 MB. Free memory was 100.1 MB in the beginning and 90.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.84 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 90.7 MB in the beginning and 178.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.00 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 163.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33169.80 ms. Allocated memory was 199.8 MB in the beginning and 408.4 MB in the end (delta: 208.7 MB). Free memory was 163.3 MB in the beginning and 358.2 MB in the end (delta: -194.8 MB). Peak memory consumption was 277.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.6s, OverallIterations: 9, TraceHistogramMax: 8, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 308 SDtfs, 356 SDslu, 1389 SDs, 0 SdLazy, 1096 SolverSat, 144 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 101 PreInvPairs, 129 NumberOfFragments, 63 HoareAnnotationTreeSize, 101 FomulaSimplifications, 1183 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 361 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 29.6s InterpolantComputationTime, 488 NumberOfCodeBlocks, 488 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 479 ConstructedInterpolants, 0 QuantifiedInterpolants, 66363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 304/431 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...