/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:16:40,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:16:40,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:16:40,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:16:40,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:16:40,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:16:40,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:16:40,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:16:40,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:16:40,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:16:40,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:16:40,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:16:40,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:16:40,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:16:40,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:16:40,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:16:40,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:16:40,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:16:40,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:16:40,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:16:40,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:16:40,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:16:40,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:16:40,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:16:40,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:16:40,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:16:40,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:16:40,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:16:40,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:16:40,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:16:40,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:16:40,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:16:40,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:16:40,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:16:40,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:16:40,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:16:40,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:16:40,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:16:40,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:16:40,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:16:40,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:16:40,933 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 10:16:40,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:16:40,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:16:40,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:16:40,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:16:40,984 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:16:40,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:16:40,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:16:40,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:16:40,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:16:40,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:16:40,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:16:40,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:16:40,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:16:40,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:16:40,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:16:40,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:16:40,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:16:40,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:16:40,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:16:40,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:16:40,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:16:40,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:16:40,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:16:40,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:16:40,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:16:40,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:16:40,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:16:40,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:16:40,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:16:40,991 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:16:41,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:16:41,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:16:41,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:16:41,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:16:41,500 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:16:41,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2020-09-25 10:16:41,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8785294c5/cca208702e9f449b8e39a20c531a03ef/FLAG37ec4715c [2020-09-25 10:16:42,114 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:16:42,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-2.i [2020-09-25 10:16:42,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8785294c5/cca208702e9f449b8e39a20c531a03ef/FLAG37ec4715c [2020-09-25 10:16:42,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8785294c5/cca208702e9f449b8e39a20c531a03ef [2020-09-25 10:16:42,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:16:42,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:16:42,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:16:42,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:16:42,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:16:42,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:42,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b6e365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42, skipping insertion in model container [2020-09-25 10:16:42,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:42,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:16:42,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:16:42,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:16:42,860 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:16:42,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:16:42,906 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:16:42,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42 WrapperNode [2020-09-25 10:16:42,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:16:42,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:16:42,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:16:42,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:16:42,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:42,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:42,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:42,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:42,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:42,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:42,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (1/1) ... [2020-09-25 10:16:43,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:16:43,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:16:43,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:16:43,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:16:43,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (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 10:16:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:16:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:16:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:16:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:16:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:16:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:16:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 10:16:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:16:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:16:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:16:43,327 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:16:43,328 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:16:43,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:16:43 BoogieIcfgContainer [2020-09-25 10:16:43,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:16:43,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:16:43,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:16:43,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:16:43,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:16:42" (1/3) ... [2020-09-25 10:16:43,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54884c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:16:43, skipping insertion in model container [2020-09-25 10:16:43,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:16:42" (2/3) ... [2020-09-25 10:16:43,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54884c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:16:43, skipping insertion in model container [2020-09-25 10:16:43,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:16:43" (3/3) ... [2020-09-25 10:16:43,348 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2020-09-25 10:16:43,369 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:16:43,397 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:16:43,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:16:43,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:16:43,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:16:43,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:16:43,494 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:16:43,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:16:43,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:16:43,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:16:43,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:16:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-25 10:16:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 10:16:43,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:43,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:16:43,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:43,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1015763017, now seen corresponding path program 1 times [2020-09-25 10:16:43,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:43,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342050820] [2020-09-25 10:16:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:43,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:43,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 10:16:43,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 10:16:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:43,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:16:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:16:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:16:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:16:44,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:16:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:16:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:44,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:44,265 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 10:16:44,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342050820] [2020-09-25 10:16:44,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:16:44,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 10:16:44,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437404996] [2020-09-25 10:16:44,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:16:44,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:44,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:16:44,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:16:44,301 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 9 states. [2020-09-25 10:16:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:44,549 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2020-09-25 10:16:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:16:44,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-25 10:16:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:44,563 INFO L225 Difference]: With dead ends: 50 [2020-09-25 10:16:44,563 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 10:16:44,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:16:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 10:16:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 10:16:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 10:16:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 10:16:44,627 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2020-09-25 10:16:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:44,627 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 10:16:44,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:16:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 10:16:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 10:16:44,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:44,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:16:44,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:16:44,630 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:44,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1391461948, now seen corresponding path program 1 times [2020-09-25 10:16:44,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:44,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525038635] [2020-09-25 10:16:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:45,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:45,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:16:45,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:16:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 996 [2020-09-25 10:16:45,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:45,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:16:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:16:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:16:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:16:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:46,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:46,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:16:46,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:16:46,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:46,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 10:16:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:46,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:46,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:16:46,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:46,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:16:46,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:46,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:16:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:16:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:16:46,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525038635] [2020-09-25 10:16:46,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:46,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:16:46,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318373876] [2020-09-25 10:16:46,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:16:46,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:46,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:16:46,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:16:46,084 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 12 states. [2020-09-25 10:16:46,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:46,347 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-25 10:16:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:16:46,348 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-09-25 10:16:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:46,349 INFO L225 Difference]: With dead ends: 46 [2020-09-25 10:16:46,350 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 10:16:46,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:16:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 10:16:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 10:16:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:16:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-25 10:16:46,361 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 29 [2020-09-25 10:16:46,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:46,361 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-25 10:16:46,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:16:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-25 10:16:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 10:16:46,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:46,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:16:46,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:16:46,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash -864598657, now seen corresponding path program 2 times [2020-09-25 10:16:46,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:46,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995614249] [2020-09-25 10:16:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:46,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:51,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:51,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:16:51,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:16:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:16:51,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:51,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:16:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:16:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:16:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:51,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:51,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:51,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:16:51,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:16:51,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:51,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 10:16:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:51,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:51,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:16:51,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:51,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:16:51,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:51,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:16:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:16:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:51,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:16:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:51,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:51,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:16:51,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:16:51,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:51,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:16:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:16:51,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:16:52,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995614249] [2020-09-25 10:16:52,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:52,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:16:52,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4734764] [2020-09-25 10:16:52,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:16:52,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:52,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:16:52,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:16:52,007 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 13 states. [2020-09-25 10:16:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:52,457 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-09-25 10:16:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:16:52,457 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-09-25 10:16:52,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:52,459 INFO L225 Difference]: With dead ends: 56 [2020-09-25 10:16:52,459 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 10:16:52,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:16:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 10:16:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-25 10:16:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 10:16:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-09-25 10:16:52,470 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 39 [2020-09-25 10:16:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:52,470 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-09-25 10:16:52,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:16:52,471 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-09-25 10:16:52,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 10:16:52,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:52,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:16:52,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:16:52,473 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:52,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:52,474 INFO L82 PathProgramCache]: Analyzing trace with hash -628399238, now seen corresponding path program 3 times [2020-09-25 10:16:52,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:52,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212409199] [2020-09-25 10:16:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:53,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:57,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:16:57,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:16:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 10:16:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:57,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:16:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:16:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:16:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:59,938 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 22 [2020-09-25 10:17:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:00,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:00,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:00,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:00,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:00,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 10:17:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:00,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:00,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:00,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:17:00,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:00,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:17:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:00,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:00,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:00,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:00,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:00,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:17:00,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:00,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:00,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 10:17:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:00,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:00,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:00,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:17:00,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:00,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 10:17:00,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212409199] [2020-09-25 10:17:00,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:00,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:17:00,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759551400] [2020-09-25 10:17:00,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:17:00,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:00,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:17:00,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:17:00,551 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 15 states. [2020-09-25 10:17:07,428 WARN L193 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-09-25 10:17:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:07,637 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-09-25 10:17:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:17:07,638 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-09-25 10:17:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:07,643 INFO L225 Difference]: With dead ends: 62 [2020-09-25 10:17:07,643 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 10:17:07,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:17:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 10:17:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 10:17:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 10:17:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 10:17:07,658 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 49 [2020-09-25 10:17:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:07,659 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 10:17:07,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:17:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 10:17:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 10:17:07,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:07,662 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:07,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:17:07,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:07,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1142588341, now seen corresponding path program 4 times [2020-09-25 10:17:07,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:07,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673735695] [2020-09-25 10:17:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:07,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:08,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:08,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:13,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:13,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:17:13,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:17:13,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5322 [2020-09-25 10:17:13,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:13,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:17:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:17:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 10:17:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:17,854 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-09-25 10:17:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:24,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:17:24,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 10:17:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:17:24,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:24,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:17:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:17:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 10:17:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:24,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:24,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:17:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:24,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:24,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:17:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:25,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:25,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:25,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 10:17:25,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:25,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:25,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 66 refuted. 2 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:17:25,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673735695] [2020-09-25 10:17:25,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:25,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 10:17:25,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533846172] [2020-09-25 10:17:25,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 10:17:25,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:25,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 10:17:25,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=266, Unknown=3, NotChecked=0, Total=306 [2020-09-25 10:17:25,110 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 18 states. [2020-09-25 10:17:32,634 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2020-09-25 10:17:33,179 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 23 [2020-09-25 10:17:33,518 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2020-09-25 10:17:34,763 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-09-25 10:17:37,211 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-09-25 10:17:40,009 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 50 DAG size of output: 44