/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:06,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:06,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:06,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:06,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:06,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:06,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:06,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:06,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:06,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:06,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:06,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:06,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:06,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:06,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:06,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:06,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:06,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:06,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:06,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:06,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:06,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:06,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:06,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:06,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:06,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:06,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:06,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:06,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:06,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:06,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:06,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:06,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:06,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:06,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:06,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:06,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:06,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:06,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:06,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:06,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:06,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:19:06,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:06,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:06,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:06,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:06,788 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:06,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:06,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:06,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:06,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:06,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:06,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:06,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:06,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:06,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:06,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:06,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:06,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:06,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:06,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:06,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:06,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:06,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:06,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:06,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:06,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:06,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:06,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:06,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:06,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:06,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:19:07,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:07,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:07,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:07,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:07,257 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:07,258 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 11:19:07,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9768dc98/44fd3781db0840ccbf5c85c577462b61/FLAGdd14aa0a5 [2020-09-25 11:19:08,005 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:08,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 11:19:08,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9768dc98/44fd3781db0840ccbf5c85c577462b61/FLAGdd14aa0a5 [2020-09-25 11:19:08,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9768dc98/44fd3781db0840ccbf5c85c577462b61 [2020-09-25 11:19:08,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:08,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:08,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:08,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:08,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:08,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:08" (1/1) ... [2020-09-25 11:19:08,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:08, skipping insertion in model container [2020-09-25 11:19:08,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:08" (1/1) ... [2020-09-25 11:19:08,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:08,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:08,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:08,933 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:09,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:09,187 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:09,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09 WrapperNode [2020-09-25 11:19:09,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:09,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:09,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:09,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:09,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... [2020-09-25 11:19:09,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:09,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:09,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:09,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:09,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:09,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:09,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:09,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:09,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:11,028 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:11,028 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:11,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:11 BoogieIcfgContainer [2020-09-25 11:19:11,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:11,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:11,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:11,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:11,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:08" (1/3) ... [2020-09-25 11:19:11,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:11, skipping insertion in model container [2020-09-25 11:19:11,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:09" (2/3) ... [2020-09-25 11:19:11,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:11, skipping insertion in model container [2020-09-25 11:19:11,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:11" (3/3) ... [2020-09-25 11:19:11,050 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 11:19:11,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:11,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:11,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:11,146 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:11,146 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:11,146 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:11,146 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:11,146 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:11,147 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:11,147 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:11,147 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:11,179 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 11:19:11,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:11,191 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] [2020-09-25 11:19:11,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:11,200 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 11:19:11,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:11,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 11:19:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:11,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:12,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 11:19:12,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-09-25 11:19:12,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:12,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:19:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:19:12,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:12,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:12,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:19:12,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:12,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:12,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:12,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 11:19:12,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:12,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:12,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250668296] [2020-09-25 11:19:12,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:12,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:12,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:12,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:12,501 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:14,713 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 11:19:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:14,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 11:19:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:14,740 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 11:19:14,740 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 11:19:14,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:14,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 11:19:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 11:19:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 11:19:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 11:19:14,854 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 53 [2020-09-25 11:19:14,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:14,855 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 11:19:14,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 11:19:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 11:19:14,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:14,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:14,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:14,867 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 11:19:14,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:14,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969830544] [2020-09-25 11:19:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:19,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:19,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 11:19:19,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:19:19,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:19,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:19:19,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:19:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:20,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:20,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:19:20,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:20,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:20,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:20,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:20,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:20,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 11:19:20,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:20,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:20,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:20,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:20,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969830544] [2020-09-25 11:19:20,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:20,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:20,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614415445] [2020-09-25 11:19:20,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:20,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:20,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:20,424 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 11:19:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:22,192 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 11:19:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:22,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 11:19:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:22,203 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 11:19:22,203 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 11:19:22,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 11:19:22,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 11:19:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 11:19:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 11:19:22,250 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 132 [2020-09-25 11:19:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:22,251 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 11:19:22,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:22,251 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 11:19:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 11:19:22,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:22,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:22,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:22,260 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:22,261 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 11:19:22,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:22,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47027657] [2020-09-25 11:19:22,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:24,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:24,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 11:19:24,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2500 [2020-09-25 11:19:24,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:24,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:19:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 11:19:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:24,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:24,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:24,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:24,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:24,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:24,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:19:24,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:24,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:24,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:25,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:25,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:25,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 11:19:25,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:25,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:19:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:25,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47027657] [2020-09-25 11:19:25,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:25,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:19:25,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870932364] [2020-09-25 11:19:25,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:19:25,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:25,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:19:25,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:25,452 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 12 states. [2020-09-25 11:19:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:29,635 INFO L93 Difference]: Finished difference Result 3131 states and 3961 transitions. [2020-09-25 11:19:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:19:29,636 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 142 [2020-09-25 11:19:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:29,662 INFO L225 Difference]: With dead ends: 3131 [2020-09-25 11:19:29,663 INFO L226 Difference]: Without dead ends: 2254 [2020-09-25 11:19:29,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:19:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-09-25 11:19:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1709. [2020-09-25 11:19:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 11:19:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2134 transitions. [2020-09-25 11:19:29,776 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2134 transitions. Word has length 142 [2020-09-25 11:19:29,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:29,782 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2134 transitions. [2020-09-25 11:19:29,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:19:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2134 transitions. [2020-09-25 11:19:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 11:19:29,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:29,798 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:29,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:29,798 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:29,802 INFO L82 PathProgramCache]: Analyzing trace with hash 99423878, now seen corresponding path program 1 times [2020-09-25 11:19:29,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:29,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953378076] [2020-09-25 11:19:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:34,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 11:19:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4540 [2020-09-25 11:19:34,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:34,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:19:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 11:19:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:34,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:34,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:19:34,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:34,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:34,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:34,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:34,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:34,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:34,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:34,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 11:19:34,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:34,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:19:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:34,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:34,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:34,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:34,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 11:19:34,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:34,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:34,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:34,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:34,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:34,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 92 proven. 47 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:19:35,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953378076] [2020-09-25 11:19:35,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:35,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:35,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970982450] [2020-09-25 11:19:35,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:35,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:35,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:35,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:35,082 INFO L87 Difference]: Start difference. First operand 1709 states and 2134 transitions. Second operand 8 states. [2020-09-25 11:19:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:38,782 INFO L93 Difference]: Finished difference Result 5205 states and 6758 transitions. [2020-09-25 11:19:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:38,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 11:19:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:38,807 INFO L225 Difference]: With dead ends: 5205 [2020-09-25 11:19:38,807 INFO L226 Difference]: Without dead ends: 3511 [2020-09-25 11:19:38,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2020-09-25 11:19:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3116. [2020-09-25 11:19:38,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3116 states. [2020-09-25 11:19:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 4140 transitions. [2020-09-25 11:19:38,957 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 4140 transitions. Word has length 212 [2020-09-25 11:19:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:38,958 INFO L479 AbstractCegarLoop]: Abstraction has 3116 states and 4140 transitions. [2020-09-25 11:19:38,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 4140 transitions. [2020-09-25 11:19:38,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 11:19:38,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:38,966 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:38,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:38,966 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:38,967 INFO L82 PathProgramCache]: Analyzing trace with hash -597957375, now seen corresponding path program 1 times [2020-09-25 11:19:38,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:38,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751059224] [2020-09-25 11:19:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 11:19:44,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:19:44,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:19:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:44,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:44,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 11:19:44,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:44,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 11:19:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 140 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:19:44,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751059224] [2020-09-25 11:19:44,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:44,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:44,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486171224] [2020-09-25 11:19:44,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:44,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:44,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:44,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:44,780 INFO L87 Difference]: Start difference. First operand 3116 states and 4140 transitions. Second operand 10 states. [2020-09-25 11:19:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:49,547 INFO L93 Difference]: Finished difference Result 6789 states and 9264 transitions. [2020-09-25 11:19:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:19:49,552 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 221 [2020-09-25 11:19:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:49,574 INFO L225 Difference]: With dead ends: 6789 [2020-09-25 11:19:49,574 INFO L226 Difference]: Without dead ends: 3838 [2020-09-25 11:19:49,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:19:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2020-09-25 11:19:49,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 3491. [2020-09-25 11:19:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3491 states. [2020-09-25 11:19:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 4597 transitions. [2020-09-25 11:19:49,702 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 4597 transitions. Word has length 221 [2020-09-25 11:19:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:49,703 INFO L479 AbstractCegarLoop]: Abstraction has 3491 states and 4597 transitions. [2020-09-25 11:19:49,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 4597 transitions. [2020-09-25 11:19:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 11:19:49,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:49,709 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:49,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:49,709 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1019952713, now seen corresponding path program 1 times [2020-09-25 11:19:49,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:49,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246742712] [2020-09-25 11:19:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:51,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 11:19:51,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-09-25 11:19:51,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:51,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:51,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:51,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-25 11:19:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 11:19:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:51,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:51,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:51,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:19:51,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:51,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:51,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 11:19:51,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 11:19:51,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:51,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:51,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:51,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:51,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 11:19:51,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 11:19:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 11:19:51,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:51,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:51,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:51,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 11:19:51,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-25 11:19:51,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246742712] [2020-09-25 11:19:51,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:51,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:19:51,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247576896] [2020-09-25 11:19:51,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:19:51,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:51,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:19:51,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:51,680 INFO L87 Difference]: Start difference. First operand 3491 states and 4597 transitions. Second operand 6 states. [2020-09-25 11:19:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:54,264 INFO L93 Difference]: Finished difference Result 10032 states and 14361 transitions. [2020-09-25 11:19:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:19:54,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2020-09-25 11:19:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:54,307 INFO L225 Difference]: With dead ends: 10032 [2020-09-25 11:19:54,307 INFO L226 Difference]: Without dead ends: 6711 [2020-09-25 11:19:54,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6711 states. [2020-09-25 11:19:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 6689. [2020-09-25 11:19:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6689 states. [2020-09-25 11:19:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6689 states to 6689 states and 9295 transitions. [2020-09-25 11:19:54,509 INFO L78 Accepts]: Start accepts. Automaton has 6689 states and 9295 transitions. Word has length 257 [2020-09-25 11:19:54,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:54,510 INFO L479 AbstractCegarLoop]: Abstraction has 6689 states and 9295 transitions. [2020-09-25 11:19:54,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:19:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 6689 states and 9295 transitions. [2020-09-25 11:19:54,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-25 11:19:54,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:54,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 11:19:54,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:54,524 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash -739361997, now seen corresponding path program 1 times [2020-09-25 11:19:54,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:54,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91554355] [2020-09-25 11:19:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking...