/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=0.4 --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 13:39:07,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:39:07,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:39:07,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:39:07,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:39:07,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:39:07,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:39:07,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:39:07,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:39:07,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:39:07,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:39:07,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:39:07,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:39:07,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:39:07,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:39:07,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:39:07,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:39:07,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:39:08,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:39:08,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:39:08,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:39:08,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:39:08,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:39:08,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:39:08,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:39:08,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:39:08,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:39:08,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:39:08,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:39:08,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:39:08,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:39:08,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:39:08,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:39:08,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:39:08,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:39:08,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:39:08,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:39:08,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:39:08,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:39:08,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:39:08,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:39:08,034 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 13:39:08,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:39:08,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:39:08,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:39:08,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:39:08,090 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:39:08,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:39:08,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:39:08,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:39:08,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:39:08,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:39:08,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:39:08,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:39:08,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:39:08,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:39:08,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:39:08,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:39:08,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:39:08,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:39:08,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:39:08,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:39:08,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:39:08,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:39:08,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:39:08,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:39:08,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:39:08,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:39:08,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:39:08,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:39:08,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:39:08,098 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:39:08,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:39:08,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:39:08,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:39:08,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:39:08,534 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:39:08,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2020-09-25 13:39:08,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68ea37883/8c6c20a9f94a40a192d995b629748562/FLAGa635f2908 [2020-09-25 13:39:09,182 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:39:09,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-2.i [2020-09-25 13:39:09,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68ea37883/8c6c20a9f94a40a192d995b629748562/FLAGa635f2908 [2020-09-25 13:39:09,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68ea37883/8c6c20a9f94a40a192d995b629748562 [2020-09-25 13:39:09,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:39:09,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:39:09,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:09,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:39:09,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:39:09,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fb8f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09, skipping insertion in model container [2020-09-25 13:39:09,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:39:09,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:39:09,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:09,797 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:39:09,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:09,837 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:39:09,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09 WrapperNode [2020-09-25 13:39:09,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:09,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:39:09,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:39:09,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:39:09,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (1/1) ... [2020-09-25 13:39:09,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:39:09,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:39:09,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:39:09,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:39:09,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (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 13:39:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:39:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:39:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:39:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:39:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:39:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:39:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 13:39:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:39:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:39:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:39:10,226 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:39:10,226 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:39:10,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:10 BoogieIcfgContainer [2020-09-25 13:39:10,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:39:10,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:39:10,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:39:10,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:39:10,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:39:09" (1/3) ... [2020-09-25 13:39:10,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c5a950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:10, skipping insertion in model container [2020-09-25 13:39:10,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:09" (2/3) ... [2020-09-25 13:39:10,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c5a950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:10, skipping insertion in model container [2020-09-25 13:39:10,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:10" (3/3) ... [2020-09-25 13:39:10,243 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2020-09-25 13:39:10,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:39:10,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:39:10,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:39:10,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:39:10,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:39:10,337 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:39:10,337 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:39:10,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:39:10,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:39:10,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:39:10,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:39:10,364 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-25 13:39:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:39:10,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:10,376 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 13:39:10,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:10,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:10,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1015763017, now seen corresponding path program 1 times [2020-09-25 13:39:10,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:10,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374143600] [2020-09-25 13:39:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:10,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:10,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:39:10,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:10,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 13:39:10,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:10,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:39:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:39:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:39:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:39:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:11,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:11,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:11,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:39:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:11,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:11,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:11,194 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 13:39:11,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374143600] [2020-09-25 13:39:11,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:11,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:39:11,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324980243] [2020-09-25 13:39:11,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:39:11,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:11,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:39:11,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:11,225 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 9 states. [2020-09-25 13:39:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:11,402 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2020-09-25 13:39:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:39:11,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-25 13:39:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:11,416 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:39:11,416 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 13:39:11,421 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 13:39:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 13:39:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 13:39:11,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 13:39:11,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 13:39:11,473 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2020-09-25 13:39:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:11,474 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 13:39:11,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:39:11,475 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 13:39:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 13:39:11,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:11,476 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 13:39:11,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:39:11,477 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:11,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:11,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1391461948, now seen corresponding path program 1 times [2020-09-25 13:39:11,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:11,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654874789] [2020-09-25 13:39:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:11,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:12,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:12,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:39:12,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1208 [2020-09-25 13:39:12,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:12,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:39:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:39:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:39:12,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:39:13,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:13,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:13,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:13,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:13,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:13,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:13,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:13,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:39:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:13,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:13,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:13,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:39:13,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:13,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:13,141 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 13:39:13,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654874789] [2020-09-25 13:39:13,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:13,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:39:13,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625356603] [2020-09-25 13:39:13,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:39:13,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:13,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:39:13,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:39:13,147 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 12 states. [2020-09-25 13:39:13,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:13,420 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-25 13:39:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:39:13,421 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-09-25 13:39:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:13,423 INFO L225 Difference]: With dead ends: 46 [2020-09-25 13:39:13,423 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:39:13,425 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 13:39:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:39:13,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:39:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:39:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-25 13:39:13,435 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 29 [2020-09-25 13:39:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:13,436 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-25 13:39:13,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:39:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-25 13:39:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 13:39:13,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:13,438 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 13:39:13,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:39:13,438 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash -864598657, now seen corresponding path program 2 times [2020-09-25 13:39:13,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:13,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908318386] [2020-09-25 13:39:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:18,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:18,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:39:18,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:39:18,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:39:18,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:18,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:39:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:39:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:39:18,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:18,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:18,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:18,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:18,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:18,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:18,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:39:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:39:19,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:19,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:19,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:39:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:19,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:19,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:19,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:39:19,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:19,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:39:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:39:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:19,111 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 13:39:19,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908318386] [2020-09-25 13:39:19,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:19,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:39:19,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913077502] [2020-09-25 13:39:19,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:39:19,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:19,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:39:19,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:39:19,114 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 13 states. [2020-09-25 13:39:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:19,595 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-09-25 13:39:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:39:19,596 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-09-25 13:39:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:19,598 INFO L225 Difference]: With dead ends: 56 [2020-09-25 13:39:19,598 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 13:39:19,599 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 13:39:19,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 13:39:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-25 13:39:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 13:39:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-09-25 13:39:19,608 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 39 [2020-09-25 13:39:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:19,609 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-09-25 13:39:19,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:39:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-09-25 13:39:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 13:39:19,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:19,611 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 13:39:19,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:39:19,612 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:19,612 INFO L82 PathProgramCache]: Analyzing trace with hash -628399238, now seen corresponding path program 3 times [2020-09-25 13:39:19,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:19,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695251120] [2020-09-25 13:39:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:19,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:21,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:24,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:24,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 13:39:24,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:39:24,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:39:24,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:24,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:39:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:39:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:39:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:26,973 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 22 [2020-09-25 13:39:27,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:27,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:27,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:27,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:27,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:27,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:27,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:39:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:27,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:39:27,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:27,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:39:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:27,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:27,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:27,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 13:39:27,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:27,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:39:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:39:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:39:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:27,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:27,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:27,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:39:27,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:27,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:27,583 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 13:39:27,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695251120] [2020-09-25 13:39:27,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:27,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:39:27,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181688762] [2020-09-25 13:39:27,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:39:27,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:27,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:39:27,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:39:27,588 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 15 states. [2020-09-25 13:39:32,485 WARN L193 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-09-25 13:39:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:32,735 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-09-25 13:39:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:39:32,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-09-25 13:39:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:32,741 INFO L225 Difference]: With dead ends: 62 [2020-09-25 13:39:32,741 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:39:32,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:39:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:39:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 13:39:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 13:39:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 13:39:32,759 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 49 [2020-09-25 13:39:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:32,760 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 13:39:32,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:39:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 13:39:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 13:39:32,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:32,763 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 13:39:32,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:39:32,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:32,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1142588341, now seen corresponding path program 4 times [2020-09-25 13:39:32,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:32,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489469359] [2020-09-25 13:39:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:38,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:39:38,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:39:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5462 [2020-09-25 13:39:38,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:38,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:39:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 13:39:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:39:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:44,905 WARN L193 SmtUtils]: Spent 6.30 s on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-09-25 13:39:49,315 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 52 DAG size of output: 21 [2020-09-25 13:39:51,552 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 62 DAG size of output: 23 [2020-09-25 13:39:52,372 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 22 [2020-09-25 13:39:54,966 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 68 DAG size of output: 22 [2020-09-25 13:39:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:59,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:59,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:59,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:59,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:39:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:59,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:59,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:59,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:39:59,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:59,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:39:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:59,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:59,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:59,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:59,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:59,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:39:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:39:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:59,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:59,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:59,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:39:59,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:59,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:59,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:39:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:59,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:59,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:59,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 13:39:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:59,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:39:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:39:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 57 proven. 15 refuted. 2 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 13:39:59,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489469359] [2020-09-25 13:39:59,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:59,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:39:59,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397629955] [2020-09-25 13:39:59,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:39:59,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:59,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:39:59,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=174, Unknown=3, NotChecked=0, Total=210 [2020-09-25 13:39:59,699 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 15 states.