/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/Problem04_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:40:39,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:40:39,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:40:39,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:40:39,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:40:39,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:40:39,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:40:39,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:40:39,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:40:39,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:40:39,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:40:39,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:40:39,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:40:39,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:40:39,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:40:39,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:40:39,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:40:39,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:40:39,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:40:39,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:40:39,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:40:39,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:40:39,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:40:39,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:40:39,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:40:39,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:40:39,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:40:39,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:40:39,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:40:39,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:40:39,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:40:39,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:40:39,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:40:39,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:40:39,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:40:39,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:40:39,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:40:39,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:40:39,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:40:39,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:40:39,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:40:39,891 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 06:40:39,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:40:39,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:40:39,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:40:39,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:40:39,944 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:40:39,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:40:39,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:40:39,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:40:39,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:40:39,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:40:39,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:40:39,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:40:39,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:40:39,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:40:39,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:40:39,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:40:39,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:40:39,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:40:39,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:40:39,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:40:39,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:40:39,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:40:39,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:40:39,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:40:39,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:40:39,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:40:39,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:40:39,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:40:39,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:40:39,949 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 06:40:40,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:40:40,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:40:40,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:40:40,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:40:40,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:40:40,284 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label50.c [2020-10-13 06:40:40,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d3bdef16/2c73858576ad4e7c9cc6434acb546fb3/FLAGc3050ce3c [2020-10-13 06:40:41,107 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:40:41,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label50.c [2020-10-13 06:40:41,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d3bdef16/2c73858576ad4e7c9cc6434acb546fb3/FLAGc3050ce3c [2020-10-13 06:40:41,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d3bdef16/2c73858576ad4e7c9cc6434acb546fb3 [2020-10-13 06:40:41,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:40:41,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:40:41,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:40:41,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:40:41,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:40:41,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:40:41" (1/1) ... [2020-10-13 06:40:41,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c21aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:41, skipping insertion in model container [2020-10-13 06:40:41,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:40:41" (1/1) ... [2020-10-13 06:40:41,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:40:41,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:40:42,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:40:42,897 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:40:43,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:40:43,572 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:40:43,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43 WrapperNode [2020-10-13 06:40:43,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:40:43,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:40:43,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:40:43,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:40:43,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (1/1) ... [2020-10-13 06:40:43,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (1/1) ... [2020-10-13 06:40:43,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (1/1) ... [2020-10-13 06:40:43,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (1/1) ... [2020-10-13 06:40:43,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (1/1) ... [2020-10-13 06:40:43,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (1/1) ... [2020-10-13 06:40:43,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (1/1) ... [2020-10-13 06:40:43,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:40:43,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:40:43,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:40:43,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:40:43,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (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 06:40:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:40:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:40:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:40:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:40:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:40:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:40:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:40:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:40:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:40:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:40:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:40:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:40:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:40:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:40:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:40:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:40:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:40:48,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:40:48,107 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:40:48,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:40:48 BoogieIcfgContainer [2020-10-13 06:40:48,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:40:48,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:40:48,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:40:48,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:40:48,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:40:41" (1/3) ... [2020-10-13 06:40:48,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7502bf97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:40:48, skipping insertion in model container [2020-10-13 06:40:48,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:43" (2/3) ... [2020-10-13 06:40:48,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7502bf97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:40:48, skipping insertion in model container [2020-10-13 06:40:48,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:40:48" (3/3) ... [2020-10-13 06:40:48,127 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label50.c [2020-10-13 06:40:48,138 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:40:48,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:40:48,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:40:48,194 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:40:48,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:40:48,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:40:48,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:40:48,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:40:48,195 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:40:48,195 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:40:48,195 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:40:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:40:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-10-13 06:40:48,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:48,304 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] [2020-10-13 06:40:48,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1347224739, now seen corresponding path program 1 times [2020-10-13 06:40:48,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:48,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124957635] [2020-10-13 06:40:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:54,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-13 06:40:54,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:40:54,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 06:40:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:40:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:40:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:40:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:41:00,690 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 34 [2020-10-13 06:41:01,037 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 38 [2020-10-13 06:41:01,450 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 45 [2020-10-13 06:41:01,783 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 45 [2020-10-13 06:41:02,105 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 51 [2020-10-13 06:41:02,353 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 38 [2020-10-13 06:41:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:02,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:02,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:02,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:41:02,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:41:02,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:08,560 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 06:41:08,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124957635] [2020-10-13 06:41:08,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:41:08,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:41:08,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933504131] [2020-10-13 06:41:08,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:41:08,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:08,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:41:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:41:08,594 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:41:09,337 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-13 06:41:09,760 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-13 06:41:10,122 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-13 06:41:12,363 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-10-13 06:41:12,670 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-13 06:41:14,798 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-10-13 06:41:16,015 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-13 06:41:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:25,419 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:41:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:41:25,421 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 828 [2020-10-13 06:41:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:25,460 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:41:25,461 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:41:25,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:41:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:41:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:41:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:41:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:41:25,652 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 828 [2020-10-13 06:41:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:25,658 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:41:25,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:41:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:41:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2020-10-13 06:41:25,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:25,716 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:41:25,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:41:25,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1286235444, now seen corresponding path program 1 times [2020-10-13 06:41:25,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:25,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629416639] [2020-10-13 06:41:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:31,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:31,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 863 [2020-10-13 06:41:31,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:41:31,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-13 06:41:31,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:41:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:41:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:41:31,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:32,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:32,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:32,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:41:32,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:32,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:32,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:32,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:41:32,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:32,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:41:32,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:41:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:41:36,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629416639] [2020-10-13 06:41:36,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:36,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:41:36,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754413733] [2020-10-13 06:41:36,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:41:36,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:41:36,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:41:36,387 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-13 06:41:37,023 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-13 06:41:40,950 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2020-10-13 06:41:41,573 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:41:42,505 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:41:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:51,090 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-13 06:41:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:41:51,091 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 847 [2020-10-13 06:41:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:51,104 INFO L225 Difference]: With dead ends: 3123 [2020-10-13 06:41:51,104 INFO L226 Difference]: Without dead ends: 2276 [2020-10-13 06:41:51,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:41:51,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-13 06:41:51,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-13 06:41:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-13 06:41:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-13 06:41:51,166 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 847 [2020-10-13 06:41:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:51,167 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-13 06:41:51,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:41:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-13 06:41:51,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2020-10-13 06:41:51,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:51,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:51,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:41:51,181 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash 914311054, now seen corresponding path program 1 times [2020-10-13 06:41:51,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:51,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799024023] [2020-10-13 06:41:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:55,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:56,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 870 [2020-10-13 06:41:56,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:41:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-13 06:41:56,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:41:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:41:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:41:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:58,009 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-10-13 06:41:58,139 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-13 06:41:58,326 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-10-13 06:41:58,537 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 42 [2020-10-13 06:41:58,729 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 40 [2020-10-13 06:41:59,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:59,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:59,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:41:59,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:59,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:59,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:59,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:41:59,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:41:59,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:41:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:42:02,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799024023] [2020-10-13 06:42:02,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:02,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:42:02,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113130415] [2020-10-13 06:42:02,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:42:02,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:02,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:42:02,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:42:02,731 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-13 06:42:03,279 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:42:09,327 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-10-13 06:42:09,641 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2020-10-13 06:42:09,974 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-10-13 06:42:10,522 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 95 [2020-10-13 06:42:11,884 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-10-13 06:42:15,969 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2020-10-13 06:42:16,387 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-13 06:42:16,575 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-13 06:42:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:22,761 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-13 06:42:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:42:22,767 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 854 [2020-10-13 06:42:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:22,782 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 06:42:22,782 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 06:42:22,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:42:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 06:42:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-13 06:42:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-13 06:42:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-13 06:42:22,857 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 854 [2020-10-13 06:42:22,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:22,858 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-13 06:42:22,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:42:22,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-13 06:42:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2020-10-13 06:42:22,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:22,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:42:22,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:42:22,873 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:22,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:22,873 INFO L82 PathProgramCache]: Analyzing trace with hash 542205831, now seen corresponding path program 1 times [2020-10-13 06:42:22,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:22,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033957555] [2020-10-13 06:42:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:28,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:28,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 882 [2020-10-13 06:42:28,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:42:28,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 06:42:28,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:42:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:42:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 833 [2020-10-13 06:42:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:28,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:28,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:28,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:42:28,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:42:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:28,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:28,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:28,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:42:28,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:42:28,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:28,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:28,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:28,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:28,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:42:28,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:42:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:42:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:42:29,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033957555] [2020-10-13 06:42:29,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:29,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:42:29,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028836904] [2020-10-13 06:42:30,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:42:30,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:30,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:42:30,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:42:30,005 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-13 06:42:38,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:38,672 INFO L93 Difference]: Finished difference Result 5684 states and 8005 transitions. [2020-10-13 06:42:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:42:38,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 864 [2020-10-13 06:42:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:38,689 INFO L225 Difference]: With dead ends: 5684 [2020-10-13 06:42:38,690 INFO L226 Difference]: Without dead ends: 3631 [2020-10-13 06:42:38,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:42:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-13 06:42:38,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2020-10-13 06:42:38,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-10-13 06:42:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4725 transitions. [2020-10-13 06:42:38,809 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4725 transitions. Word has length 864 [2020-10-13 06:42:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:38,811 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4725 transitions. [2020-10-13 06:42:38,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:42:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4725 transitions. [2020-10-13 06:42:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2020-10-13 06:42:38,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:38,834 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 06:42:38,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:42:38,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:38,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:38,836 INFO L82 PathProgramCache]: Analyzing trace with hash -253206462, now seen corresponding path program 1 times [2020-10-13 06:42:38,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:38,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406005472] [2020-10-13 06:42:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:39,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:43,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:43,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 934 [2020-10-13 06:42:43,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:42:43,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 06:42:43,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:42:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:42:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:44,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:44,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:44,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:42:44,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:44,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:42:44,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:44,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:44,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:44,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:42:44,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:44,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:44,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:44,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:44,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:42:44,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:42:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:42:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:44,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:44,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:44,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:42:44,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:42:44,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:42:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:42:44,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406005472] [2020-10-13 06:42:44,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:44,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:44,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584110681] [2020-10-13 06:42:44,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:44,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:44,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:44,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:44,677 INFO L87 Difference]: Start difference. First operand 3631 states and 4725 transitions. Second operand 7 states. [2020-10-13 06:42:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:56,685 INFO L93 Difference]: Finished difference Result 8357 states and 11810 transitions. [2020-10-13 06:42:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:42:56,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 914 [2020-10-13 06:42:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:56,718 INFO L225 Difference]: With dead ends: 8357 [2020-10-13 06:42:56,718 INFO L226 Difference]: Without dead ends: 5459 [2020-10-13 06:42:56,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:42:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2020-10-13 06:42:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 5387. [2020-10-13 06:42:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5387 states. [2020-10-13 06:42:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 6816 transitions. [2020-10-13 06:42:56,910 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 6816 transitions. Word has length 914 [2020-10-13 06:42:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:56,911 INFO L479 AbstractCegarLoop]: Abstraction has 5387 states and 6816 transitions. [2020-10-13 06:42:56,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:42:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 6816 transitions. [2020-10-13 06:42:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2020-10-13 06:42:56,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:56,934 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 06:42:56,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:42:56,935 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:56,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1410960844, now seen corresponding path program 1 times [2020-10-13 06:42:56,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:56,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874756891] [2020-10-13 06:42:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:57,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:59,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:02,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:02,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 937 [2020-10-13 06:43:02,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:43:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 06:43:02,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:43:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:43:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:02,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:02,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:02,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:02,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:43:02,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:02,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:02,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:02,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:02,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:43:02,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:02,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:02,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:43:02,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:02,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:43:02,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:43:02,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:43:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:43:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:43:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:02,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:02,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:43:02,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:02,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 06:43:02,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:43:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:43:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:43:03,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874756891] [2020-10-13 06:43:03,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:03,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:03,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165779113] [2020-10-13 06:43:03,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:03,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:03,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:03,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:03,197 INFO L87 Difference]: Start difference. First operand 5387 states and 6816 transitions. Second operand 7 states. [2020-10-13 06:43:15,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:15,110 INFO L93 Difference]: Finished difference Result 13630 states and 18143 transitions. [2020-10-13 06:43:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:43:15,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 917 [2020-10-13 06:43:15,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:15,150 INFO L225 Difference]: With dead ends: 13630 [2020-10-13 06:43:15,151 INFO L226 Difference]: Without dead ends: 8976 [2020-10-13 06:43:15,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:43:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8976 states. [2020-10-13 06:43:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8976 to 8949. [2020-10-13 06:43:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8949 states. [2020-10-13 06:43:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8949 states to 8949 states and 11600 transitions. [2020-10-13 06:43:15,358 INFO L78 Accepts]: Start accepts. Automaton has 8949 states and 11600 transitions. Word has length 917 [2020-10-13 06:43:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:15,358 INFO L479 AbstractCegarLoop]: Abstraction has 8949 states and 11600 transitions. [2020-10-13 06:43:15,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8949 states and 11600 transitions. [2020-10-13 06:43:15,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2020-10-13 06:43:15,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:15,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:43:15,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:43:15,393 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash -338983260, now seen corresponding path program 1 times [2020-10-13 06:43:15,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:15,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262955124] [2020-10-13 06:43:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:20,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:20,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-13 06:43:20,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:43:20,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 06:43:20,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:43:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:43:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-13 06:43:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:20,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:20,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:20,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:20,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:43:20,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:43:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:20,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:20,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:20,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:43:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:43:20,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:43:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:20,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:21,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:21,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:21,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:43:21,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:43:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-13 06:43:21,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:43:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:21,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:43:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:21,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:21,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:43:21,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 06:43:21,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:43:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 248 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-13 06:43:21,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262955124] [2020-10-13 06:43:21,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:21,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:21,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031272610] [2020-10-13 06:43:21,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:21,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:21,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:21,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:21,882 INFO L87 Difference]: Start difference. First operand 8949 states and 11600 transitions. Second operand 7 states. [2020-10-13 06:43:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:33,279 INFO L93 Difference]: Finished difference Result 20749 states and 29259 transitions. [2020-10-13 06:43:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:43:33,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1025 [2020-10-13 06:43:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:33,321 INFO L225 Difference]: With dead ends: 20749 [2020-10-13 06:43:33,321 INFO L226 Difference]: Without dead ends: 12533 [2020-10-13 06:43:33,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:43:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2020-10-13 06:43:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 12383. [2020-10-13 06:43:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12383 states. [2020-10-13 06:43:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12383 states to 12383 states and 15937 transitions. [2020-10-13 06:43:33,603 INFO L78 Accepts]: Start accepts. Automaton has 12383 states and 15937 transitions. Word has length 1025 [2020-10-13 06:43:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:33,604 INFO L479 AbstractCegarLoop]: Abstraction has 12383 states and 15937 transitions. [2020-10-13 06:43:33,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 12383 states and 15937 transitions. [2020-10-13 06:43:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2020-10-13 06:43:33,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:33,640 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:43:33,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:43:33,641 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:33,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:33,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1866101643, now seen corresponding path program 1 times [2020-10-13 06:43:33,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:33,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626962567] [2020-10-13 06:43:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:38,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1054 [2020-10-13 06:43:38,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:43:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-13 06:43:38,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 06:43:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:43:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:39,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:39,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:39,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:39,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:39,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:43:39,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:43:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:39,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:39,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:39,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:43:39,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:43:39,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:39,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:39,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:43:39,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:43:39,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:43:39,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:43:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:39,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:39,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:43:39,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 06:43:39,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 06:43:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 06:43:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:39,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:39,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:43:39,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:39,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:43:39,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:43:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-13 06:43:39,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626962567] [2020-10-13 06:43:39,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:39,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:39,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234581066] [2020-10-13 06:43:39,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:39,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:39,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:39,746 INFO L87 Difference]: Start difference. First operand 12383 states and 15937 transitions. Second operand 7 states. [2020-10-13 06:43:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:52,463 INFO L93 Difference]: Finished difference Result 29497 states and 39860 transitions. [2020-10-13 06:43:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:43:52,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1032 [2020-10-13 06:43:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:52,539 INFO L225 Difference]: With dead ends: 29497 [2020-10-13 06:43:52,539 INFO L226 Difference]: Without dead ends: 17847 [2020-10-13 06:43:52,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:43:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17847 states. [2020-10-13 06:43:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17847 to 17779. [2020-10-13 06:43:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17779 states. [2020-10-13 06:43:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17779 states to 17779 states and 22932 transitions. [2020-10-13 06:43:52,966 INFO L78 Accepts]: Start accepts. Automaton has 17779 states and 22932 transitions. Word has length 1032 [2020-10-13 06:43:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:52,966 INFO L479 AbstractCegarLoop]: Abstraction has 17779 states and 22932 transitions. [2020-10-13 06:43:52,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 17779 states and 22932 transitions. [2020-10-13 06:43:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2020-10-13 06:43:53,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:53,022 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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] [2020-10-13 06:43:53,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:43:53,023 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:53,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1921397888, now seen corresponding path program 1 times [2020-10-13 06:43:53,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:53,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717101408] [2020-10-13 06:43:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:53,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:58,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:58,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1071 [2020-10-13 06:43:58,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:43:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:43:58,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:43:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 06:43:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:58,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:58,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:58,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:43:58,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:58,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:58,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:58,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:58,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:43:58,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:58,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:58,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:58,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:58,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:43:58,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:43:58,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:43:58,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:43:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:58,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:58,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 06:43:58,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 06:43:58,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:58,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:58,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 06:43:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:43:59,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717101408] [2020-10-13 06:43:59,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:59,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:59,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316542682] [2020-10-13 06:43:59,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:59,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:59,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:59,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:59,106 INFO L87 Difference]: Start difference. First operand 17779 states and 22932 transitions. Second operand 7 states. [2020-10-13 06:44:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:44:10,700 INFO L93 Difference]: Finished difference Result 50250 states and 67578 transitions. [2020-10-13 06:44:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:44:10,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1051 [2020-10-13 06:44:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:44:10,796 INFO L225 Difference]: With dead ends: 50250 [2020-10-13 06:44:10,796 INFO L226 Difference]: Without dead ends: 33204 [2020-10-13 06:44:10,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:44:10,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33204 states. [2020-10-13 06:44:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33204 to 28901. [2020-10-13 06:44:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28901 states. [2020-10-13 06:44:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28901 states to 28901 states and 36586 transitions. [2020-10-13 06:44:11,521 INFO L78 Accepts]: Start accepts. Automaton has 28901 states and 36586 transitions. Word has length 1051 [2020-10-13 06:44:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:44:11,522 INFO L479 AbstractCegarLoop]: Abstraction has 28901 states and 36586 transitions. [2020-10-13 06:44:11,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:44:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 28901 states and 36586 transitions. [2020-10-13 06:44:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1164 [2020-10-13 06:44:11,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:44:11,575 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:44:11,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:44:11,576 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:44:11,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:44:11,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1905307826, now seen corresponding path program 1 times [2020-10-13 06:44:11,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:44:11,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781589513] [2020-10-13 06:44:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:44:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:12,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:16,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1187 [2020-10-13 06:44:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:44:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-13 06:44:16,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:44:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 06:44:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:44:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:44:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:17,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:44:17,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:17,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:44:17,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:17,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:44:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:17,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:44:17,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:44:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:17,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:44:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:17,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:44:17,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:44:17,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:17,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:44:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:17,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:44:17,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:17,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:44:17,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:17,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 06:44:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:17,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:44:17,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:44:17,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:44:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 06:44:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 06:44:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:17,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:44:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:44:17,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:44:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:44:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:44:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 426 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2020-10-13 06:44:17,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781589513] [2020-10-13 06:44:17,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:44:17,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:44:17,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968475084] [2020-10-13 06:44:17,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:44:17,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:44:17,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:44:17,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:44:17,849 INFO L87 Difference]: Start difference. First operand 28901 states and 36586 transitions. Second operand 7 states.