/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:06:39,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:06:39,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:06:39,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:06:39,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:06:39,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:06:39,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:06:39,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:06:39,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:06:39,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:06:39,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:06:39,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:06:39,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:06:39,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:06:39,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:06:39,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:06:39,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:06:39,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:06:39,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:06:39,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:06:39,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:06:39,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:06:39,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:06:39,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:06:39,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:06:39,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:06:39,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:06:39,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:06:39,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:06:39,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:06:39,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:06:39,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:06:39,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:06:39,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:06:39,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:06:39,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:06:39,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:06:39,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:06:39,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:06:39,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:06:39,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:06:39,977 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 [2020-10-13 07:06:40,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:06:40,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:06:40,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:06:40,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:06:40,023 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:06:40,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:06:40,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:06:40,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:06:40,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:06:40,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:06:40,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:06:40,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:06:40,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:06:40,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:06:40,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:06:40,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:06:40,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:06:40,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:06:40,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:06:40,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:06:40,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:06:40,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:06:40,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:06:40,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:06:40,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:06:40,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:06:40,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:06:40,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:06:40,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:06:40,029 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:06:40,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:06:40,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:06:40,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:06:40,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:06:40,348 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:06:40,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label28.c [2020-10-13 07:06:40,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59fce455/b5903d5054534238bbfde47a02081ba4/FLAG8d80ac0db [2020-10-13 07:06:41,317 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:06:41,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label28.c [2020-10-13 07:06:41,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59fce455/b5903d5054534238bbfde47a02081ba4/FLAG8d80ac0db [2020-10-13 07:06:41,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59fce455/b5903d5054534238bbfde47a02081ba4 [2020-10-13 07:06:41,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:06:41,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:06:41,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:41,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:06:41,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:06:41,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:41" (1/1) ... [2020-10-13 07:06:41,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b9b7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:41, skipping insertion in model container [2020-10-13 07:06:41,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:41" (1/1) ... [2020-10-13 07:06:41,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:06:42,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:06:44,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:44,589 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:06:45,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:45,768 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:06:45,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45 WrapperNode [2020-10-13 07:06:45,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:45,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:06:45,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:06:45,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:06:45,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (1/1) ... [2020-10-13 07:06:45,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (1/1) ... [2020-10-13 07:06:45,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (1/1) ... [2020-10-13 07:06:45,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (1/1) ... [2020-10-13 07:06:46,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (1/1) ... [2020-10-13 07:06:46,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (1/1) ... [2020-10-13 07:06:46,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (1/1) ... [2020-10-13 07:06:46,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:06:46,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:06:46,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:06:46,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:06:46,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (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 [2020-10-13 07:06:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:06:46,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:06:46,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:06:46,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:06:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:06:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:06:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:06:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:06:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:06:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:06:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:06:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:06:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:06:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:06:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:06:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:06:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:06:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:06:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:06:53,003 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:06:53,003 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:06:53,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:53 BoogieIcfgContainer [2020-10-13 07:06:53,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:06:53,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:06:53,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:06:53,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:06:53,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:06:41" (1/3) ... [2020-10-13 07:06:53,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428c808c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:53, skipping insertion in model container [2020-10-13 07:06:53,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:45" (2/3) ... [2020-10-13 07:06:53,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428c808c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:53, skipping insertion in model container [2020-10-13 07:06:53,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:53" (3/3) ... [2020-10-13 07:06:53,026 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label28.c [2020-10-13 07:06:53,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:06:53,046 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:06:53,060 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:06:53,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:06:53,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:06:53,092 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:06:53,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:06:53,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:06:53,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:06:53,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:06:53,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:06:53,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:06:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-10-13 07:06:53,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:06:53,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:06:53,184 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:06:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:06:53,191 INFO L82 PathProgramCache]: Analyzing trace with hash -2104730241, now seen corresponding path program 1 times [2020-10-13 07:06:53,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:06:53,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474467565] [2020-10-13 07:06:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:06:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:59,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:59,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-13 07:06:59,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:06:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5241 [2020-10-13 07:06:59,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:06:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:06:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:06:59,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 07:07:07,389 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-13 07:07:07,697 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 07:07:08,026 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 83 [2020-10-13 07:07:08,338 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 83 [2020-10-13 07:07:08,908 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 92 [2020-10-13 07:07:09,183 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2020-10-13 07:07:09,510 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2020-10-13 07:07:09,759 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2020-10-13 07:07:10,026 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2020-10-13 07:07:10,260 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-13 07:07:10,524 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-13 07:07:10,747 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-10-13 07:07:11,050 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 64 [2020-10-13 07:07:11,393 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 64 [2020-10-13 07:07:11,745 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 59 [2020-10-13 07:07:11,915 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:07:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:07:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:11,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:07:11,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 07:07:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:07:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:07:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:07:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:07:27,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474467565] [2020-10-13 07:07:27,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:07:27,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:07:27,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333111775] [2020-10-13 07:07:27,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:07:27,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:07:27,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:07:27,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:07:27,159 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:07:27,642 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-13 07:07:28,499 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 183 [2020-10-13 07:07:29,316 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 183 [2020-10-13 07:07:30,228 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 191 [2020-10-13 07:07:34,631 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 189 [2020-10-13 07:07:38,683 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 212 DAG size of output: 188 [2020-10-13 07:07:41,536 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2020-10-13 07:07:42,430 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 186 [2020-10-13 07:07:43,621 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 185 [2020-10-13 07:07:54,069 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 178 [2020-10-13 07:07:54,926 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2020-10-13 07:07:58,166 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2020-10-13 07:08:06,332 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 176 [2020-10-13 07:08:07,256 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 180 [2020-10-13 07:08:10,290 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 178 [2020-10-13 07:08:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:08:24,510 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:08:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:08:24,513 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 994 [2020-10-13 07:08:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:08:24,553 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:08:24,554 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:08:24,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:08:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:08:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:08:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:08:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:08:24,723 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 994 [2020-10-13 07:08:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:24,726 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:08:24,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:08:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:08:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2020-10-13 07:08:24,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:24,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:08:24,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:08:24,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1255766894, now seen corresponding path program 1 times [2020-10-13 07:08:24,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:24,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48207308] [2020-10-13 07:08:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:25,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:30,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:30,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1082 [2020-10-13 07:08:30,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:08:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 07:08:30,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:08:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:08:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:08:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:30,844 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:08:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:08:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:30,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:30,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:08:30,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 07:08:30,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:08:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:08:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:30,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:08:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:31,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:31,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:31,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:08:31,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 07:08:31,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:08:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:08:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:08:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:08:32,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48207308] [2020-10-13 07:08:32,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:08:32,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:08:32,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082355183] [2020-10-13 07:08:32,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:08:32,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:08:32,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:08:32,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:08:32,239 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:08:32,410 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 07:08:33,824 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:08:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:08:56,784 INFO L93 Difference]: Finished difference Result 4485 states and 7524 transitions. [2020-10-13 07:08:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:08:56,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1064 [2020-10-13 07:08:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:08:56,805 INFO L225 Difference]: With dead ends: 4485 [2020-10-13 07:08:56,805 INFO L226 Difference]: Without dead ends: 3226 [2020-10-13 07:08:56,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:08:56,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2020-10-13 07:08:56,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3154. [2020-10-13 07:08:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-10-13 07:08:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 4665 transitions. [2020-10-13 07:08:56,907 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 4665 transitions. Word has length 1064 [2020-10-13 07:08:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:56,907 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 4665 transitions. [2020-10-13 07:08:56,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:08:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 4665 transitions. [2020-10-13 07:08:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2020-10-13 07:08:56,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:56,951 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:08:56,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:08:56,952 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:56,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1616734187, now seen corresponding path program 1 times [2020-10-13 07:08:56,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:56,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647966525] [2020-10-13 07:08:56,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:57,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:02,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:02,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1134 [2020-10-13 07:09:02,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:09:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 07:09:02,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:09:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:09:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:09:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:05,225 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-13 07:09:05,452 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-13 07:09:05,798 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2020-10-13 07:09:06,127 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2020-10-13 07:09:06,485 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2020-10-13 07:09:06,769 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2020-10-13 07:09:07,099 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2020-10-13 07:09:07,497 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2020-10-13 07:09:08,169 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 80 [2020-10-13 07:09:08,670 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 70 [2020-10-13 07:09:09,109 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2020-10-13 07:09:09,298 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:09:09,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:09:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:09,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:09,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:09:09,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:09,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 07:09:09,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:09:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:09:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:09:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:09,507 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-13 07:09:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:09:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:09,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:09,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:09:09,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-13 07:09:09,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:09:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:09:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:09:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:09:20,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647966525] [2020-10-13 07:09:20,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:09:20,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 07:09:20,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179804214] [2020-10-13 07:09:20,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 07:09:20,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:09:20,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 07:09:20,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-13 07:09:20,414 INFO L87 Difference]: Start difference. First operand 3154 states and 4665 transitions. Second operand 19 states. [2020-10-13 07:09:20,814 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 07:09:23,832 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 89 [2020-10-13 07:09:24,279 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-13 07:09:24,738 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 93 [2020-10-13 07:09:25,673 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 186 [2020-10-13 07:09:26,776 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 223 DAG size of output: 206 [2020-10-13 07:09:28,516 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 203 [2020-10-13 07:09:32,326 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 228 DAG size of output: 202 [2020-10-13 07:09:38,025 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 07:09:44,930 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 182 [2020-10-13 07:09:46,082 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 223 DAG size of output: 196 [2020-10-13 07:09:48,099 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 190 [2020-10-13 07:10:00,831 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 187 [2020-10-13 07:10:02,288 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 183